May 28, 1982, Press Release, Honda MCX50, a new American custom bike with a unique style, goes on sale

Honda Motor Co., Ltd. will release the Honda MCX50, a new American-style custom bike with innovative styling and a full range of equipment, on June 1st.

The MCX50 is equipped with a newly designed air-cooled 2-stroke 49cc, 7.0 horsepower engine. It is designed to be easy to use from low to high speeds, allowing you to enjoy a relaxed and comfortable ride in city streets and on tours.

The overall design, with its sharply angled covered handlebars and metallic streamlines from under the tank to the tail that tighten the side view, combined with the subtle curves of the rear cowl, further emphasizes the innovative new American style.

The front is equipped with a hydraulic disc brake (front wheel) that provides excellent braking performance. In addition, it is fully equipped with original design cast wheels, a large 35w/35w square type headlight, a simple and highly visible speed and tachometer, a push-type fuel cap with an automatic locking device, and other features.

This brings the total number of Honda 50cc sports cars to five, including the MCX50, making it a comprehensive series that can meet the needs of a wide range of customers.

The sales plan is

The planned production volume is 20,000 units per year.

Standard cash price is

169,000 yen (Prices in Hokkaido and Okinawa are 3,000 yen higher, and some remote islands are excluded.)

Main Features

Equipped with a newly designed air-cooled, 2-stroke, 49cc, 7 horsepower engine that offers improved tenacity at low and mid-speed ranges.

Adopting an original design cast wheel with a high-quality feel.

The indicator section is separated into square speedometer and tachometer with an easy-to-read layout.

Equipped with hydraulic disc brakes (front wheels) that provide excellent braking performance.

A variety of comprehensive equipment is included.

・Large 7.5L fuel tank.

・35w/35w large square type headlight.

・A compact 12 volt, 3 amp battery.

・Push-type fuel cap with automatic locking device (same type as VF750MAGNA).

・A powerful, thick rear tire designed specifically for the MCX50.

・Handle lock with integrated main switch.

・Oil indicator lamp, high beam indicator lamp.

・A regulator to prevent the battery from overcharging.

Main specifications

Model AC04

Total length (mm) 1.885

Overall width (mm) 0.720

Overall height (mm) 1.110

Wheelbase(mm) 1.220

Minimum ground clearance(mm) 0.155

Seat height(mm) 0.750

Vehicle weight (kg) 86

Dry weight (kg) 78

Passenger capacity (persons) 1

Fuel economy (km/L) 68.0 (30km/h constant speed test value)

Climbing ability (tanθ) 0.46 (approx. 25 degrees)

Minimum turning radius (m) 2.1

Engine type AC04E (air-cooled 2-cycle piston reed valve)

Displacement ( cm3 ) 49

Inner diameter x stroke (mm) 39.0×41.4

Compression Ratio 7.4

Maximum power output (PS/rpm) 7.0/8,000

Maximum torque (kg-m/rpm) 0.65/7,000

Starting method kick

Ignition method CDI

Lubrication Method Separate lubrication type

Lubricating oil capacity (L) 2.1

Fuel tank capacity(L) 7.5

Clutch type Wet type multi-plate coil spring

Transmission type Constant mesh type (5-stage return)

Gear ratio 1st speed, 3.083/2nd speed, 1.882/3rd speed, 1.400/4th speed, 1.130/5th speed, 0.960

Caster (degrees) 29°00′

Trail (mm) 110

Tire size (front) 70/90-19-40P/(back) 100/90-16-54P

Brake Type (Front) Hydraulic disc/(Rear) Mechanical leading/trailing

Suspension method (Front) Telescopic/(Rear) Swingarm

Frame Format Semi-double cradle

October 29, 1985, Press Release, Honda launches 50cc land sports bike "Honda MTX50R" with improved performance

Honda Motor Co., Ltd. has improved the power output (from 6PS/6,500rpm to 7.2PS/8,500rpm) of its land sports bike "Honda MTX50R," which is equipped with a water-cooled, two-stroke, single-cylinder (49cc) engine that allows for comfortable riding on rough terrain and in urban areas, and will release the new model on November 1st.

The engine installed in this MTX50R adopts a four-leaf reed valve with a straightening plate that brings smooth intake to the inlet port, a hemispherical combustion chamber with excellent combustion efficiency, and a balancer that reduces the vibrations unique to two-stroke engines, achieving both powerful and smooth riding.

The transmission is a six-speed transmission that allows a wide range of appropriate gears to be selected depending on the riding conditions. The suspension is a telescopic type for the front wheel and a popular Pro-Link type for the rear wheel. In addition, the cushion stroke is 200mm for the front wheel and 170mm for the rear wheel, providing excellent road-following performance from rough ground to paved roads.

The frame is a full-fledged semi-double cradle frame that maintains high rigidity even when subjected to strong shocks when riding on rough terrain. In addition, the slim body has good foot placement, and the seat is laid out all the way to the top of the tank, allowing the rider to ride in an appropriate position depending on the road conditions.

Sales plan (domestic, annual plan)

8,000 units

National Standard Cash Price

189,000 yen

(Prices for Hokkaido and Okinawa are 5,000 yen higher, and some remote islands are excluded.)

Main specifications

Model A-AD06

Total length (m) 2.070

Overall width(m) 0.805

Total height (m) 1.130

Wheelbase(m) 1.350

Minimum ground clearance(m) 0.230

Seat height(m) 0.830

Vehicle weight (kg) 97

Dry weight (kg) 87

Passenger capacity (persons) 1

Fuel economy (km/L) 70.0 (30km/h constant speed test value)

Minimum turning radius (m) 2.0

Engine type AD06E (water-cooled 2-stroke single cylinder)

Total displacement (cm 3 ) 49

Inner diameter x stroke (mm) 39.0×41.4

Compression Ratio 7.3

Maximum power output (PS/rpm) 7.2/8,500

Maximum torque (kg-m/rpm) 0.65/7,500

Carburetor Type PF16

Starting method Primary Kick

Ignition method Non-contact CDI

Lubrication Method Separate lubrication type

Lubricating oil capacity (L) 1.2

Fuel tank capacity(L) 8

Clutch type Wet type multi-plate coil spring

Transmission type Constant mesh 6-speed return

Gear ratio　 1st gear 3.545

2nd speed 2.333

3rd speed 1.722

4-speed 1.380

5-speed 1.173

6-speed 1.041

Caster (degrees) 26°30′

Trail (mm) 96

Tire size before 2.50-21-4PR

rear 3.00-18-4PR

Brake Type　 before Mechanical Leading Trailing

rear Mechanical Leading Trailing

Suspension method　 before Telescopic

rear Swing arm (Prolink)

Frame Format Semi-double cradle

December 9, 1983, Press Release, Honda releases the land sports bike "HONDA MTX50R" equipped with a water-cooled, two-stroke engine

Honda Motor Co., Ltd. will release the Honda MTX50R, a land sports bike equipped with a water-cooled, two-stroke, 49cc, single-cylinder engine that allows for comfortable riding on rough terrain and in urban areas, on December 10th.

The engine of this MTX50R uses Honda's unique hemispherical combustion chamber with excellent combustion efficiency. In addition, it is equipped with HERP (Honda Torque Amplifier Resonator), which demonstrates powerful output characteristics at medium and low speeds, and a balancer that reduces vibrations unique to two-stroke engines, achieving both powerful and smooth riding.

The front wheel suspension is telescopic and the rear wheel suspension is the popular Pro-Link type. In addition, both the front and rear wheels have the longest cushion stroke in the 50cc class (front: 200mm / rear: 170mm), which allows it to exhibit excellent road following performance from rough ground to paved roads.

The frame is a full-fledged semi-double cradle frame that maintains high rigidity even with strong impacts when riding on rough ground. In addition, the slim body with good foot placement, combined with the seat laid out to the top of the tank, allows you to obtain an appropriate riding posture depending on the road conditions.

*HERP: Honda Energy Resonance Pipe

Sales plan (domestic/annual)

10,000 units (planned)

National Standard Cash Price

185,000 yen

(Prices for Hokkaido and Okinawa are 3,000 yen higher. Prices exclude some other remote islands.)

Main specifications

Model AD06
Overall length x overall width x overall height (m) 2.070×0.805×1.130
Wheelbase(m) 1.350
Minimum ground clearance(m) 0.230
Seat height(m) 0.830
Vehicle weight (kg) 97
Dry weight (kg) 87
Fuel economy (Km/L) 65.0 (30km/h constant speed test value)
Climbing ability (tanθ) 0.46 (approx. 25 degrees)
Engine type and total displacement (cm 3 ) AD06E・49
Maximum power output (PS/rpm) 6.2/6,500
Maximum torque (kg-m/rpm) 0.69/6,000
Starting method Primary Kick
Ignition method Non-contact CDI
Fuel tank capacity(L) 8
Transmission type Constant mesh type 5-stage return
Tire size 　 front 2.50-21-4PR | rear 3.00-18-4PR
Brake type: front and rear Mechanical Leading Trailing

March 19, 1982, Press Release, Honda releases the "Honda MTX50," a land sports bike with full-scale specifications and equipment.

 Honda Motor Co., Ltd. will release the Honda MTX50, a two-stroke land sports bike with full-fledged size and equipment that can be enjoyed in a wide range of situations, from city driving to suburban and off-road driving, on March 20th.

The MTX50 is equipped with Honda's unique Pro-Link rear suspension, which has already been adopted in high-end land sports models and has been highly praised. Combined with the front fork with a high-rigidity 31mmφ large-diameter pipe, it exhibits outstanding road-following ability and excellent maneuverability.

The engine (49cc, 2-cycle single cylinder) uses the newly developed (※) "H.E.R.P" (Honda Energy Resonance Pipe) system, which aims to improve power output at medium and low speeds. In addition, the two-stage retard (electronic retard) system prevents a sudden drop in power output at high speeds, and the balancer reduces the engine vibration unique to 2-cycles, making it easy to use and comfortable to ride as a land sports bike.

*"HERP" is a revolutionary system developed to further improve the efficiency of filling the combustion chamber. It is set in the exhaust pipe, and the expansion wave from here and the reflected wave and composite wave from the expansion chamber push the mixture back from the exhaust boat to the combustion chamber. This widens the power band and improves power output in the mid- and low-range.

The transmission is a 6-speed transmission that allows the rider to select the optimum gear ratio depending on the road conditions.

The body is a highly rigid semi-double cradle frame with a high-tensile steel head pipe that can withstand full-scale rough terrain driving.

In addition, it is equipped with a large-diameter round speedometer and tachometer with trip meter, a large-capacity (9.5 liter) fuel tank, a rear carrier, and other features that allow for long-distance driving. It also features a skid plate that protects the crankcase from unevenness in the road surface, and rear indicator stays that are difficult to break or bend even in the event of a fall, and many other useful features. The

long wheelbase design provides a comfortable riding position whether riding on paved roads or rough terrain, and the meter visor and side cover with number plate and the tank design combine to create the image of a full-fledged land sports bike.

The front brake is a single hub type that is light and effective, and the new variable grip tires mounted on the large diameter wheels (front: 2.50-21, rear: 3.00-18) provide excellent off-road performance.

With the release of the MTX50, the Land Sports Bike series has been enriched to five models in addition to the four models already on the market, the 4-cycle XL series (XL250R, 125R, 80S, 50S), and can meet a wide range of user needs.

The sales plan is

The plan is to sell 8,000 units per year in Japan.

Standard cash price is

165,000 yen

(Prices in Hokkaido and Okinawa are 3,000 yen higher, excluding some remote islands )

MTX50 Main Specifications
Model AD04
Total length (m) 2.060
Overall width(m) 0.810
Total height (m) 1.145
Wheelbase(m) 1.335
Minimum ground clearance(m) 0.250
Seat height(m) 0.820
Vehicle weight (kg) 98
Dry weight (kg) 89
Passenger capacity (persons) 1
Fuel economy (km/L) 68 (30km/h constant speed test value)
Climbing ability (tanθ) 0.50 (approx. 26 degrees)
Minimum turning radius (m) 2.0
Engine type AD01E (air-cooled 2-cycle piston reed valve)
Displacement ( cm3 ) 49
Inner diameter x stroke (mm) 39.0×41.4
Compression Ratio 7.4
Maximum power output (PS/rpm) 6.5/7,500
Maximum torque (kg-m/rpm) 0.64/7,000
Carburetor Type PF15
Starting method Primary Kick
Ignition method Non-contact CDI
Lubrication Method Separate lubrication type
Lubricating oil tank capacity (L) 2.1
Fuel tank capacity(L) 9.5
Clutch type Wet type multi-plate coil spring
Transmission type Constant mesh 6-speed return
Gear ratio 1st speed, 3.545 2nd speed, 2.333 3rd speed, 1.722, 4th speed, 1.380 5th speed, 1.173 6th speed, 4.041
Caster (degrees) 28°00′
Trail (mm) 107
Tire size (Front) 2.50-21-4PR (Rear) 3.00-18-4PR
Brake Type (Front) Mechanical leading/trailing | (Rear) Mechanical leading/trailing
Suspension method (Front) Telescopic
(Rear) Pro-Link swingarm
Frame Format Semi-double cradle frame

May 27, 1980, Press Release, Honda releases the "Honda MB5" with semi-up handlebars that allow for a comfortable riding position

Honda Motor Co., Ltd. will add a new semi-up handlebar model to its popular Honda MB50 two-stroke 50cc road sports bike and release it on June 2nd.

The MB50 is a sports bike with a unique body design and a high-performance two-stroke engine, and since its release in April last year, it has been well-received for its light running and maneuverability, and by adding a new semi-up handlebar model, it can now be used for a wide range of purposes.

The MB5 offers a comfortable riding position for city streets and long-distance riding, and allows you to enjoy a relaxed ride. It also comes with a convenient storage compartment.

Domestic sales plan

The planned production volume is 8,000 units per year.

Standard cash price is

142,000 yen (excluding some remote islands, Hokkaido price is 3,000 yen higher)

Main specifications

Model AC01
Overall length x overall width x overall height (m) 1.880×0.705×1.025
Wheelbase(m) 1.215
Weight (kg) Maintenance: 87, Drying: 78
Fuel economy (km/L) 65 (30km/h steady state test value)
Climbing ability (tanθ) 0.36 (approx. 20 degrees)
Engine type AC01E (air-cooled 2-cycle piston reed valve)
Total displacement (cm 3 ) 49
Maximum power (PS/rpm) 7.0/9,000
Maximum torque (kg-m/rpm) 0.56/8,000
Starting method Kick Type
Ignition type CDI
Lubrication Method Separate lubrication type
Fuel tank capacity(L) 9.0
Transmission type Constant mesh type, forward 5-speed return type
Tire size (front and rear) 2.50-18-4PR
Brake type (front/rear) Front: Hydraulic disc, Rear: Leading/trailing
Frame Format backbone

April 17, 1979, Press Release, Honda releases its first 2-stroke 50cc road sports bike, the Honda MB50.

Honda Motor Co., Ltd. will release the Honda MB50, a 50cc road sports bike, on April 18th. The bike is equipped with a newly designed high-performance two-stroke engine and features a fresh and unique body design never before seen.

The Honda MB50 is Honda's first two-stroke road sports bike, designed for light handling and riding comfort, with a high-output (7 horsepower) engine incorporating new technologies such as a centralized cooling cylinder head and a bell-shaped combustion chamber, and a simple and highly rigid X-shaped backbone frame, all with a new design sensibility. It is an innovative bike designed to be enjoyed in a wide range of riding conditions, from city riding to long distance riding. (Complies with 1979 noise regulations)

Production plans are

The company will start with domestic production, and when it goes into full operation, including exports, it plans to produce 80,000 units per year.

Standard cash price is

136,000 yen (excluding Hokkaido and some remote islands).

Honda's 50cc road sports bikes consist of two models, the Honda CB50JX-I (equipped with a four-stroke engine) and the Honda MB50 (equipped with a two-stroke engine), each with its own characteristics and ease of use to cater to a wider range of users.

Main features of the Honda MB50

engine

・Single-shaft primary balancer: A mechanism that uses one balancer shaft to balance the primary inertial force of the reciprocating part, reducing the vibrations specific to two-stroke engines.

・Combustion chamber centralized cooling cylinder head: The cylinder head is designed to concentrate more of the airflow around the combustion chamber while driving, effectively dissipating heat generated by the engine and reducing performance changes.

・Bell-shaped combustion chamber: Compared to the general hemispherical type, this chamber has a greater effect on stirring the air-fuel mixture during the compression process, ensuring stable combustion from low to high speeds and preventing carbon clogging of the spark plugs.

・Separate oil supply system: Measures the throttle opening and supplies the ideal amount of oil according to engine speed.

・CDI ignition system = An ignition system that provides reliable ignition and improved starting performance, and is easy to maintain.

Body

・Heavy-weight concentrated design: Heavy weights such as the engine, fuel tank, and electrical equipment are located near the center of gravity, resulting in light maneuverability. Electrical equipment is also concentrated in front of the fuel tank, improving maintainability.

・X-shaped backbone frame: A simple frame constructed in an X-shape to reduce weight and increase rigidity, allowing for unique vehicle designs.

・Hydraulic disc brakes: Hydraulic disc brakes are used on the front to improve braking performance.

・Comstar Wheel = A lightweight and flexible Comstar Wheel with a T-shaped chrome plated rim and three points.

・Integrated handlebars = Sporty handlebars that integrate the top bridge and handlebars.

・    Switches and meters: The switches for the turn signals, headlights, etc. are concentrated on the left side of the handlebars for improved operability.

The meters combine the speedometer and tachometer into one unit and are located in the center for easy viewing.

Honda MB50 main specifications

Model name: Honda AC01
Total length (m) 1.880
Overall width (m) 0.655
Height (m) 0.980
Wheelbase (m) 1.215
Vehicle weight (Kg) Maintenance: 87, Drying: 78
Minimum turning radius (m) 1.8
Fuel tank capacity (L) 9.0
Fuel consumption rate (km/L)
(30km/h constant speed test value) 65
Climbing ability (tamθ) 0.36
Engine type Air-cooled 2-stroke single cylinder
Valve mechanism Reed valve type and piston valve type combined
Total displacement (cm 3 ) 49
Inner diameter x stroke (mm) 39.0×41.4
Compression Ratio 7.9
Maximum power (PS/rpm) 7.0/9,000
Maximum torque (Kg-m/rpm) 0.56/8,000
Starting method Primary kick type
Ignition system CDI
Lubrication Method Separate lubrication type
Lubricant Capacity (L) 2.1
Primary reduction ratio 4.117
Gear ratio 1st gear 3.083, 2nd speed 1.882, 3rd speed 1.400, 4-speed 1.130, 5-speed 0.960
Final Drive Ratio 3.307
Frame Format Backbone Type
Suspension system (front) Telescopic Type | Suspension system (rear) Swing arm type
Caster (degrees) 25°00′
Trail (mm) 70
Tire size (front) 2.50-18-4PR | (rear) 2.50-18-4PR
Brake Type (front) Hydraulic disc | (rear) Mechanical Leading Trailing

March 17, 1983, Press Release, Honda releases MBX125F, a lightweight sports bike with a high-performance, water-cooled, two-stroke engine

 Honda Motor Co., Ltd. will add the Honda MBX125F, a lightweight, high-performance road sports bike equipped with a water-cooled, two-stroke, single-cylinder engine, to its 125cc class sports bike series and release it on March 18th.

The Honda MBX125F was developed with the aim of being a lightweight, slim, compact, high-performance road sports bike. The engine is a water-cooled, two-stroke, 124cc, single-cylinder engine that incorporates Honda's two-stroke engine technology cultivated in road racing and motocross racing, and produces a maximum output of 22 horsepower. In addition, Honda's unique ATAC mechanism and Venturi-type exhaust chamber are actively used and controlled to actively utilize and control the exhaust pulsation unique to two-stroke engines, improving the efficiency of filling the combustion chamber with the mixture, resulting in a high output of 22 horsepower and easy-to-handle output and torque characteristics from low and medium speed ranges to high speed ranges.

*ATAC mechanism: Auto-Controlled Torque Amplification Chamber (automatic torque amplification exhaust system)

The body design was developed in pursuit of excellent maneuverability and ease of handling through slimness and light weight. The adoption of a lightweight, high-rigidity semi-double cradle frame, a 16-inch front wheel born from Honda's extensive racing experience both in Japan and overseas, and Honda's unique Pro-Link rear suspension make it possible to achieve outstanding maneuverability and a lightweight design (96 kg: dry weight).

As a result, Honda's 125cc class sports bikes are available in seven models and nine types, with two-stroke and four-stroke engines, from on-road to off-road and trekking, and can now cater to a wider range of users.

Sales plan (domestic, annual, planned)

12,000 units

National Standard Cash Price

279,000 yen

(Prices for Hokkaido and Okinawa are 5,000 yen higher, and some other remote islands are excluded.)

October 29, 1985, Press Release: Honda releases the road sports bike "HONDA MBX50F" equipped with a water-cooled, two-stroke engine

Honda Motor Co., Ltd. has increased the power output of the Honda MBX50 (from 5.6PS/6500rpm to 7.2PS/8500rpm) and redesigned its color scheme to make it a versatile 50cc road sports bike that can be used for everything from entry-level models to general road touring. The new bike will go on sale on November 1st as the Honda MBX50F.

The engine installed in this MBX50F adopts a four-leaf reed valve with a straightening plate that brings smooth intake to the inlet port (intake hole) , a hemispherical combustion chamber with excellent combustion efficiency, and a large exhaust chamber that enables powerful torque characteristics from low to medium speeds.

The transmission adopts a 6-speed transmission that allows a wide range of appropriate gears to be selected depending on the riding conditions.

The body design has a body size (wheelbase: 1255mm) that allows a relaxed riding posture, and the frame adopts a lightweight, high-rigidity semi-double cradle frame.

The rear suspension is a Pro-Link type that is well-received for its excellent road following performance, and the front wheel brake adopts Honda's original hydraulic disc brake with dual piston caliper. In terms of equipment, the coloring has been renewed, and the appearance of a cowl and under cowl has been added to give it a bold image, and the lightweight boomerang-shaped aluminum Comstar wheels are adopted for the front and rear wheels, making it a fully equipped road sports bike.

*The reed valve is a tongue-shaped valve in the crankcase mixture intake port that opens and closes automatically due to the difference in air pressure. By using a four-leaf type with two straightening vanes on the top and bottom, the flow rate of the mixture is increased, improving intake efficiency.

Sales Plan (Domestic Annual Plan)

15,000 units

National Standard Cash Price

198,000 yen
(Prices for Hokkaido and Okinawa are 5,000 yen higher. Prices exclude some other remote islands.)

Specifications

Model A-AC08
Total length (m) 1.920
Overall width(m) 0.675
Total height (m) 1.105
Wheelbase(m) 1.255
Minimum ground clearance(m) 0.170
Seat height(m) 0.770
Vehicle weight (kg) 94
Dry weight (kg) 82
Passenger capacity (persons) 1
Fuel economy (km/L) 65 (30km/h steady state test value)
Minimum turning radius (m) 2.0
Engine type AC08E (water-cooled 2-stroke single cylinder)
Total displacement (cm 3 ) 49
Inner diameter x stroke (mm) 39.0×41.4
Compression Ratio 7.3
Maximum power (PS/rpm) 7.2/8,500
Maximum torque (kg-m/rpm) 0.65/7,500
Carburetor Type PF16
Starting method Kick Type
Ignition method CDI type magnet ignition
Lubrication Method Separate lubrication type
Lubricating oil capacity (L) 1.2
Fuel tank capacity(L) 11
Clutch type Wet type multi-plate coil spring
Transmission type Constant mesh 6-speed return
Gear ratio 1st gear 3.545, 2nd speed 2.333, 3rd speed 1.722, 4-speed 1.380, 5-speed 1.173, 6-speed 1.041
Reduction ratio primary/secondary 4.117/3.071
Caster (degrees) 26°30′
Trail (mm) 72
Tire size Front 2.50-18-4PR | Rear 2.75-18-4PR
Brake Type Front Hydraulic disc | Rear Mechanical Leading Trailing
Suspension Front Telescopic | Rear Swing arm (Prolink)
Frame Format Semi-double cradle

April 20, 1984, Press Release, Honda releases the road sports bike "Honda MBX50" equipped with a water-cooled, two-stroke engine

Honda Motor Co., Ltd. will release the Honda MBX50, a road sports bike equipped with a water-cooled, two-stroke, single-cylinder (total displacement: 49 cm3 ) engine, on April 21st, which can be used for a wide range of purposes, from entry-level models to general road touring.

The engine installed in this MBX50 adopts a four-leaf reed valve with a straightening plate that provides smooth intake to the inlet port, a hemispherical combustion chamber with excellent combustion efficiency, and a large exhaust chamber, which together provide powerful torque characteristics from low to medium speeds.

The body design adopts a body size (wheelbase: 1260mm) that allows for a relaxed riding posture. The frame is a lightweight, high-rigidity semi-double cradle frame. The rear suspension is a Pro-Link type that is well-received for its excellent road-following ability, and the front wheel brake is a hydraulic disc brake with Honda's unique dual piston caliper. In addition, the front and rear wheels are equipped with lightweight boomerang-shaped all-aluminum Sports Comstars, making it a fully equipped road sports bike.
Honda's 50cc class sports bikes now include the MTX50R land sports bike, the TLM50 trekking bike, and the MBX50, and are able to meet the needs of a wide range of customers, from on-road to off-road.

Sales plan (domestic/annual)

10,000 units (planned)

National Standard Cash Price

189,000 yen
(Prices for Hokkaido and Okinawa are 5,000 yen higher. Other, some remote islands are excluded.)

Other key features

○Sporty under-cowl is standard equipment.

○Translucent speedometer and tachometer are used.

○Equipped with a large-capacity (12V3AH) small battery.

Specifications

Model A-AC08
Total length (m) 1.920
Overall width(m) 0.675
Total height (m) 1.000
Wheelbase(m) 1.260
Minimum ground clearance(m) 0.165
Seat height(m) 0.770
Vehicle weight (kg) 93
Dry weight (kg) 81
Passenger capacity (persons) 1
Fuel economy (km/L) 65 (30km/h steady state test value)
Climbing ability (tanθ) 0.46 (approx. 25 degrees)
Minimum turning radius (m) 2.0
Engine type AC08E (water-cooled 2-stroke single cylinder)
Total displacement (cm 3 ) 49
Inner diameter x stroke (mm) 39.0×41.4
Compression Ratio 7.3
Maximum power (PS/rpm) 5.6/6,500
Maximum torque (kg-m/rpm) 0.63/6,000
Carburetor Type PF11
Starting method Primary Kick
Ignition method CDI type magnet ignition
Lubrication Method Separate lubrication type
Lubricating oil capacity (L) 1.2
Fuel tank capacity(L) 12
Clutch type Wet type multi-plate coil spring
Transmission type Constant mesh type 5-stage return
Gear ratios, 1st gear 3.083, 2nd speed 1.882, 3rd speed 1.400, 4-speed 1.130, 5-speed 1.000
Reduction ratio primary/secondary 4.117/3.615
Caster (degrees) 26°30′
Trail (mm) 72
Tire size front 2.50-18-4PR | rear 2.75-18-4PR
Brake Type Front Hydraulic disc | Rear Mechanical Leading Trailing
Suspension method Front Telescopic | Rear Swing arm (Prolink)
Frame Format Semi-double cradle

February 25, 1982, Press Release, Honda releases MBX50, a road sports bike with authentic class and texture

 Honda Motor Co., Ltd. will release the Honda MBX50 on March 1st. The new bike has the class and feel of a true road sports bike, and offers a relaxed ride.

The MBX50 has a long wheelbase design (1255mm) that allows for a comfortable ride in a relaxed riding position that reduces fatigue not only in city driving but also in long-distance touring.

In addition, the large 12L fuel tank, front fender with air guide, turn signals integrated with the rear cowl, tail lamp, etc. further emphasize the bike's status as a full-fledged sports bike.

The engine is a newly designed water-cooled two-stroke 49cc engine that uses technologies such as Honda's unique four-leaf reed valve with a straightening plate, which improves ease of use in the low and medium speed ranges. It has excellent fuel economy (73.0km/L, 30km/h constant speed test value), and coupled with the large fuel tank, it makes long-distance touring enjoyable.

In addition, the body uses a high-rigidity semi-double cradle frame using ultra-high tensile steel around the head pipe, and has a lightweight design (dry weight 79kg) that is easy to handle.

The rear suspension is a Pro-Link type that has already been adopted in high-end sports cars and has been highly praised. This, combined with the large diameter 29φ front forks and lightweight aluminum boomerang-shaped Sports Comstar wheels, provides excellent manoeuvrability and ride comfort.

The front brakes use Honda's unique dual piston calipers, providing excellent braking performance.

In addition, the bike is fully equipped with a 12-volt, 3-amp battery, a large rectangular headlamp (35 watts), and a highly visible translucent meter with illuminated needles.

The sales plan is

The planned production volume is 12,000 units per year.

Standard cash price is

186,000 yen

(Prices in Hokkaido and Okinawa are 3,000 yen higher, excluding some remote islands. )

MBX50 Main Specifications

Total length (m) 1.920
Overall width (m) 0.675
Height (m) 1.000
Wheelbase (m) 1.255
Dry weight (kg) 79
Seat height (mm) 770
Frame Format Semi-double cradle
Tire size (front) 2.50-18-4PR | (rear) 2.75-18-4PR
Engine type AC03E 2-stroke single cylinder
Cooling Method Water Cooling
Caster/Trail (m/m) 26°30′/72
Total displacement (cm 3 ) 49
Inner diameter x stroke (mm) 39.0×41.4
Maximum power (PS/rpm) 7.2/8,500
Maximum torque (kg-m/rpm) 0.65/7,500
Compression Ratio 7.3
Starting method Kick Type
Ignition method CDI with 2-stage retard
Fuel tank capacity (L) 12.0
Transmission type 6-speed return
Gear ratios, 1st gear 3.545, 2nd speed 2.333, 3rd speed 1.722, 4-speed 1.380, 5-speed 1.173, 6-speed 1.041
Shock absorber, Front Telescopic | (rear) Pro Link
Carburetor PF15
Battery YB3L 12V-3AH

Press Release, January 20, 1989 - Honda releases two types of road sports bike "Honda NS50F" with dual headlights

Honda Motor Co., Ltd. will release an even more fearless version of the Honda NS50F, a popular road sports bike with a large body and full-fledged equipment despite being 50cc, with dual headlights that give it an even more aggressive look and a new color scheme from February 15, 1989, and a Rothmans color specification (limited edition) from January 21 of the same year.

The new NS50F engine is a water-cooled, two-stroke, single-cylinder engine that is easy to handle from low and mid-range to high-range and has a powerful output characteristic (7.2PS/10,000rpm). The half fairing equipped on the large frame body is newly equipped with a lens-integrated dual headlight (pale yellow krypton bulb, 18W/18W x 2). In addition to the basic design suitable for long-distance touring, it has also improved usability for night driving.

The coloring design is set to two colors: "Red & White" inspired by HRC racers and "Dark Blue Metallic" color of the Seed Racing Team. At the same time, "Blue & White" color of the Rothmans Honda team is set as a limited coloring model, further enhancing the authentic sports mood.

Sales plan (domestic/annual)
20,000 units (including 4,000 limited editions)

National Standard Cash Price
225,000 yen

(Excluding Hokkaido and Okinawa, which are 5,000 yen higher, and some other remote islands.)

Specifications 

Model A-AC08
Overall length x overall width x overall height (m) 1.855×0.630×1.065
Wheelbase(m) 1.260
Minimum ground clearance(m) 0.170
Seat height(m) 0.760
Vehicle weight/dry weight (kg) 92/79
Passenger capacity (persons) 1
Fuel economy (km/L) 50km/h constant speed test value 61.5
Minimum turning radius (m) 2.4
Engine type AC08E (water-cooled 2-stroke single cylinder)
Total displacement (cm 3 ) 49
Inner diameter x stroke (mm) 39.0×41.4
Compression Ratio 7.2
Maximum power (PS/rpm) 7.2/10,000
Maximum torque (kg-m/rpm) 0.65/7,500
Carburettor Type PF70
Starting method Kick Type
Ignition type CDI type magnet ignition
Lubrication Method Separate lubrication type
Lubricating oil capacity (L) 1.2
Fuel tank capacity(L) 10.0
Clutch type Wet type multi-plate coil spring
Transmission type Constant mesh 6-speed return
Gear ratios: 1st gear 3.545 | 2nd speed 2.333 | 3rd speed 1.722 | 4-speed 1.380 | 5-speed 1.173 | 6-speed 1.041
Reduction ratio (primary/secondary) 4.117/2.928
Caster(degrees)/Trail(mm) 25°30′/70
Tire size Front 2.75-17-4PR | Rear 3.00-17-4PR
Brake Type Front Hydraulic disc | Rear Mechanical Leading/Trailing
Suspension method Front Telescopic Type | Rear Swing arm type
Frame Format Semi-double cradle

Honda NSR125R JC20

The NSR 125-R type JC20 , was Honda's response to the ever increasingly popular 125 class and increased completion not only from its fellow Japanese rivals but more so from the Italian brands like Aprilia with its AF1 series, Cagiva's Freccia and Mito, and Gilera with its SP models. Customers were no longer interested in small, budget bikes but desired real motorcycles with big bike features that just so happened to be 125cc. It is characterised by its full fairing and was offered alongside the NSR-F with which it shares the chassis and engine.

The R featured a unique warning light bridge that extended from the fuel tank, over the top yoke where it met the bodywork under the clocks. The ignition was relocated to a special panel inside the right side of the clocks.

Warning lights with the ignition obscured by the front brake cylinder

Following the success of the NS125 (an earlier model to the NSR), the NSR125 JC20 was designed and assembled by Honda Italia Industriale S.p.A. in Rome, Italy. Grimeca was contracted to produce the aluminium cast frame (2-piece, die-cast, bolt together construction), wheels and brake assemblies. The engine was manufactured by Gilardoni with Dell'Orto supplying the carburetor. Marzocchi supplied forks and suspension while Pagani provided instrumentation and lighting. The Grimeca rear wheel was 18 inch in diameter, while the front was 17 inch and shod in Pirelli MT-45 tires.

The R was an immediate success in sales and on the track where it took over from the F which, despite the absence of the fairing, achieved good success in the '88 edition of the Sport Production championship. Followed on the track directly by the Honda Italia Racing service , the new R conquered the top positions in the rankings on many occasions and in 1989 it won the title in the over 21 category .

The NSR125R follows the same multi-spoke wheel and fender updates as the F model and in 1991 and 1992 two special versions dedicated to the Sport Production championship were also put on sale and could be purchased freely with or without a driver's license.

The NSR125R remained in production until the very early months of 1993 , when it was replaced by the new NSR-R JC22 .

Motor Single cylinder, 2 stroke, liquid cooled
Displacement 124.8cc
Bore x Stroke 54 x 54.5 mm
Maximum Power 21.3 kW
Clutch Multi-disc in oil bath
Start-up Electric
Chassis Die-cast aluminum alloy
Front suspension Telescopic hydraulic fork
Rear suspension Swingarm with hydraulic monoshock
Front brake Hydraulic disc
Rear brake Swingarm with hydraulic monoshock
Weight (dry) 132 kg.

Pre-production drawings of paintwork studies

NSR125 RK 1989

Red/ White/ Blue

Red/ White

White/Blue/ Aqua/ Pink

NSR125 RL 1990

New Grimeca six spoke wheels and a front mudguard with a thinner profile

Red/ White/ Blue, 'HRC' style

White/ Blue/ Red/ Aqua

NSR125 RM 1991

Black, Purple, Aqua, Pink

NSR125 RN 1992

Red/ White/ Blue, 

Black/ Bronze

NSR125 R3M SP91

Produced in 1991, the NSR 125 R3M, or SP91, is a special version designed to race in the Sport Production '91 championship, where Honda had achieved great success in previous editions. Featuring updated suspension, centre stand delete. New cylinder, piston, compression ratio, ignition, gearbox, Arrow exhaust kick start only

SP91

NSR125 R3N SP92

SP92