VERTEX offers you a replica forged piston kit designed for 400cc 4-stroke engines requiring power, torque and endurance, with high-quality forged aluminum alloy construction offering excellent mechanical and thermal resistance to the heavy demands of motocross and enduro racing. Thanks to its precision machining and anti-friction coating on the piston skirt, this kit reduces internal friction, improves lubrication and promotes more efficient combustion to ensure smooth revving, better engine response and consistent performance. Its Replica design respects original specifications to ensure reliable assembly, stable compression and excellent durability even under extreme conditions of use. The complete ready-to-fit kit typically includes piston, rings, pin and circlips to ensure a reliable, long-lasting top end rebuild.

Fits on :

YAMAHA WR 400 F 2001

YAMAHA WR 400 F 2000

YAMAHA WR 400 F 1999

YAMAHA WR 400 F 1998

YAMAHA YZ 400 F 1999

YAMAHA YZ 400 F 1998