CP Pistons, for those that demand the ultimate in engine performance!
NOTE: The below pistons have been discontinued by CP. We are keeping this information available as a tech resource to anyone who may need the original specifications for these pistons.
High performance and racing Yamaha piston kits were available from CP
Pistons for all model years of the YFM350 Warrior / 350 Big Bear models. These forged pistons will fit with oversize valves and high lift
camshafts because they had oversize valve reliefs. They incorporated a "X" style
forging for greater strength, durability and reduced weight.
|Standard Features that were included with each Yamaha YFM
350 Warrior Big Bear 350 CP Piston Kit:
|Double forced pin oilers
||Fully CNC Machined
||Pick lock removal grooves
|Anti detonation grooves
|Light weight pins
||Balanced to + or - 1 gram
Each of the below kits
1987 - 2004 Yamaha YFM 350 Warrior ATV CP Pistons
brand Piston Kit
2005 - 2006 Raptor 350 ATV CP Pistons brand Piston Kit
Stock Bore: 83mm (3.268")
Stock Stroke: 64.5mm (2.539")