Carrillo M1011 High-Performance Piston Kit for Yamaha YZ450F

The Carrillo M1011 is a high-performance piston and ring kit designed specifically for 2003-2009 Yamaha YZ450F motocross bikes. This complete piston kit features CP-Carrillo's advanced Project X Pro piston technology, engineered to deliver exceptional durability and performance in demanding off-road racing conditions.

Key Specifications:

• 95.0mm standard bore diameter
• 63.40mm stroke
• 449cc displacement
• 13.5:1 compression ratio
• Forged aluminum piston construction
• Floating wrist pin style with retainers included

Advanced Features:

• Project X Pro pin bore technology reduces stress in critical areas
• Gas nitrided steel top ring for maximum wear resistance
• Cast iron second ring with cast iron facing material
• Proprietary pin bore shaping process allows natural pin flex while minimizing stress
• Complete kit includes piston, rings, wrist pin, and retainers

CP-Carrillo's Project X Pro technology represents years of research and development with high-end OEM companies. The specialized pin bore processing significantly increases piston durability by addressing one of the most highly stressed areas of the piston. This kit delivers the performance and reliability demanded by professional racers and serious enthusiasts who push their YZ450F engines to the limit.