Carrillo M4031 High-Performance Forged Piston Kit 81mm 13.5:1

The Carrillo M4031 is a high-performance forged piston kit designed for 2008-2018 Suzuki Hayabusa GSX1300R motorcycles with 81mm standard bore and 65mm stroke, creating a 1340cc displacement with a 13.5:1 compression ratio. These pistons feature X-forgings to minimize friction and weight without compromising strength, making them ideal for serious performance builds and racing applications.

Key Features:

• Forged from high-strength aluminum for maximum durability
• Double pin oilers add twice the amount of oil from the cylinder wall to the wrist pin
• Radiused domes maximize quench while eliminating hot spots that promote detonation
• V-shaped accumulator groove machined into the second ring to collect excess blowby between the top and second rings
• Floating wrist pin style with retainers included
• Fully CNC machined and balanced to +/- 1 gram

Complete Kit Includes:

• Piston, wrist pin, locks, and rings
• Gas nitrided steel top ring
• Cast iron second ring
• Stainless steel oil ring with nitride facing

This piston kit works with CP-Carrillo connecting rod #4721, wrist pin #708-2000-12CP1C, locks #708x050 SWL, and ring set #CPNG-2-3189. The 13.5:1 compression ratio delivers exceptional performance gains for naturally aspirated builds seeking maximum power output.