Honda MVX250

Produced for just one year for the model year 1983, the MVX 250 was Honda’s first two-stroke road bike and was built to capitalise on Honda’s success in GP racing with Freddie Spencer’s title winning NS500. Like the NS500 it had a V3 engine, but, unlike the grand prix machine, the cylinder arrangement was the opposite, with the two outer cylinders laying forward horizontally and the middle cylinder standing vertically.

The MVX produced 40bhp and came in at 138kg dry, which was a little conservative when compared to the ground breaking 83 Suzuki RG250 which offered 45hp/ 131kg and an alloy frame. The MVX also featured Honda’s quirky in board front disc brake, handle bar fairing, belly pan and single seat converter.

The V3 engine featured a 1 vertical piston and two horizontal pistons (like the NS400R) which was the opposite of the race bike it was trying to emulate. To counteract vibration Honda made the vertical con rod thicker and heavier than the horizontal rods to act as a engine balancer. A series of engine failures saw the bike quickly retired and replaced with the much more advanced NS250, however the engine lived on with its issues resolved in the NS400R.

Maker	HONDA
Model name	MVX250F
Type · Grade	-
Engine Operation	2 stroke
Model	MC09
Displacement	249 cc
Release year	1983
Fuel Efficiency by Catalog	-
Fuel Tank Capacity	-
Fuel Supply	Carburettor
Engine Type	2-stroke/Piston Lead Valve/Water-cooled/90-degree V-type 3-cylinder
Engine Starting Method	-
Maximum Output (ps)	40ps(29kw)/9000rpm
Maximum Torque (kgf/m)	3.2kg・m(31.4N・m)/8500rpm
Vehicle Weight (Dry Weight)	138 kg
Vehicle Weight (Curb Weight)	155 kg
Length(mm)・Height(mm)・Width(mm)	1155 x 735 x 2010
Seat Height	-
Front Tire Indication	100/90-16 54S TL
for Rear Tire Indication	110/80-18 58S TL

Brochures:

Magazine: Practice Sportsbike Readers Restoration

Model kit by Tamiya

LINKS

MC NEWS AU

MVX 250 Blogspot