Yamaha RA31A 125cc V4 in Imatra memorial GP 2010

Impressive 9 speed four cylinder Yamaha 125 RA31A in Imatra memorial GP 2010 SPECIFICATIONS: Engine Type : Water-Cooled V4 Two-Stroke Bore & Stroke : 35 mm x 32.4 mm Capacity : 124,6cc Induction : Rotary Disc Valve Carburettor : Mikuni VM22 Ignition : Magneto/Transistor Power Output : over 42 bhp @ 17,400 rpm Transmission : Dry Clutch 9 Speeds Weight : 95kg