Carrillo M1000 High-Performance Forged Piston Kit for Yamaha YFZ450/YFZ450R

The Carrillo M1000 is a high-performance forged piston kit engineered specifically for Yamaha YFZ450 (2004-2009) and YFZ450R (2009-2019) ATVs. This complete piston kit delivers enhanced performance and durability for demanding powersports applications.

Advanced Engineering Features:

• X-forging technology minimizes friction and weight while maintaining exceptional strength
• 95mm standard bore diameter (3.740 inches) with 12.5:1 compression ratio for 439cc engines or 12.75:1 for 449cc engines
• Double pin oiler system delivers twice the amount of oil from cylinder wall to wrist pin for superior lubrication
• Radiused dome design maximizes quench while eliminating hot spots that promote detonation
• V-shaped accumulator groove machined into second ring land collects excess blow-by between top and second rings
• Compatible with pump gas or race fuel applications

Complete Kit Includes: Forged piston, wrist pin, circlip locks, and piston ring set. CP Carrillo pistons are manufactured using advanced Project X forging processes that reduce stress in critical pin bore areas, significantly increasing durability and service life under high-performance conditions.