Honda Classic 2 Strokes: 2018

The Honda MT80 was another 80cc bike made specifically for market and licencing needs in the early 80's. The MT, like the MB shared pretty much everything with its 50cc stable mate but used the long stroke 78cc 45mm x 49mm motor from the MB8.
Features were the same (not surprisingly!) as the MT5 with the X style frame with twin shock design and drum brakes front and rear.
The model had a short life span and after being introduced in 1981 it was offered in parallel with the first generation air-cooled MTX80 in 1982 before being dropped completely by mid 1983.

Model: MT-8
Type: HD01
Bore and stroke: 45.0 × 49.5
Engine type: Air-cooled two-stroke single-cylinder
Engine Size: 78cc
Maximum output (PS / rpm): 8 / 6,000
Maximum torque (kg-m/rpm):
Gearbox: 5-speed
Frame format: X Backbone -
Front Brake: Mechanical drum
Rear Brake: Mechanical drum
Front Tyre: 2.50 -19
Rear Tyre: 3.00 - 16
Length: 1905mm
Width: 780mm
Height: 1055mm
Wheelbase: 1240mm
Vehicle Weight (kg): 90kg
Fuel tank capacity: 6.8L
Colours: Red, White

Links:

Honda M Club on Facebook

Pictures via Honda M Shop

See also: Honda MT5, Honda MB8

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The MBX80 FWD-D

The MBX80 was produced to fit the needs of the licencing laws of multiple county's in the 1980's, where riders were restricted to a certain capacity. In the UK learners were restricted to machines up to 125cc and 12hp, the unrestricted 11hp MBX80 offered close to the same performance of the bigger restricted 125's but benefited from a free revving engine in a light-weight chassis and a lower insurance premium making it attractive to young riders. Honda also recognised that 16-18 year old's would benefit from a larger chassis compared to the out-going MB-8 model and also its main competition of the Kawaskai AR80 and Yamaha RD80LC. The sales literature at the time had Honda claiming a 'full sized frame', I wouldn't go that far but it certainly was a better fit if you were taller.

Specification wise Honda had the competition beat with a liquid cooled single cylinder 2 stroke engine with reed valve, 12 volt electrics and an engine balance shaft to smooth out vibration. Suspension was in the form of Honda's 'Pro Link' mono shock and front braking via a twin front hydraulic disc. Adding a handle bar fairing and belly pan completed the picture giving the looks and feel of a lot larger bike. The downside to this was the Honda was a much more expensive bike at £699 compared to the AR80 at £529, RD80LC at £646 and RD80MX at £557 (prices 1983).

The FWD-D was the UK models specific code and was unique in the fact that it has the duel disc brake up front opposed to the single disc Euro model (SWD-D). As well as the twin disc's this model has two single piston sliding calipers and a lever master cylinder to match. Lastly the UK specific bike was only available in Black or White in the first generation colours, although there have been some reports of a few 2 gen colours (the 'rainbow' models) with twin discs being sold in the UK which I had confirmed by a Honda dealer.

Here is what Honda said....

The highest specification yet on an 80cc machine.
Honda’s MBX 80 offers similar performance to that of restricted 125’s, but provides economies in running costs and insurance, especially for the young enthusiast. Add to that big bike style, size and feel, and you know you’re riding a winner.

Liquid cooled, high performance engine.
Packed with innovations and race proven high technology, this power-house supplies maximum output any time, all the time. Extremes of temperature make not the slightest difference to the even high output thanks to pressure fed liquid cooling. Efficient exhaust port, CD ignition and a vibration-reducing balancer keep it running as sweet as a nut.

PRO-LINK Rear Suspension.
Honda’s unique way of offering ride comfort combined with high-speed cornering precision. Single damper system gives soft damping at low damper piston speeds and gets progressively harder as damper is compressed. No compromise necessary.

Twin-Hydraulic front disc.
Maximum stopping power is provided by twin-hydraulic front discs with dual piston callipers that also give precise rider feedback. The front brakes are well balanced with dependable leading/ trailing drum at the rear.

Big Bike size and style.
The full-size frame and wheels are perfectly complemented by sleekly styled, flow-though tank, side cover and rear tailpiece. Full instrumentation is enclosed within an aerodynamic bikini fairing and the under cowling completes the fully integrated design. There’s a big bike feel as well as big bike looks, helped by no maintenance ComStar wheels.

MBX 80FWD-D Specifications
Engine	79cc, Liquid cooled 2-stoke single
Bore & Stroke	49.5 x 41.4mm
Compression ratio	7.3:1
Max. Horsepower	11.5PS/ 8000rpm (DIN)
Ignition	Capacitor Discharge
Transmission	6-speed
Starter	Primary Kick
Dimensions (LxWxH)	1970 x 675 x 1110mm
Wheelbase	1250mm
Seat Height	780mm
Ground clearance	150mm
Dry weight	95kg
Frame	Semi-double cradle
Suspension Front	Telescopic fork, 115mm travel
Suspension Rear	Pro-Link, box section swing arm/ 85mm axle travel
Wheels	New ComStar
Tyre Front	2.75 - 18 - 4PR
Tyre Rear	3.00 - 18 - 6PR
Brake Front	Twin Hydraulic disc with dual piston callipers
Brake Rear	Drum
Fuel Tank Capacity	12 lit inc 1.2 lit reserve
Colours	Black or White