Description
The CP Carrillo M1081A forged piston kit is designed for Yamaha FX SHO builders who are serious about power and plan to run high boost or aggressive tuning with a 10.5 to 1 compression ratio. Using an 86mm standard bore, these pistons maintain the stock 1812cc displacement while raising compression to support a more responsive, harder hitting powerband. When combined with the right fuel and calibration, this configuration delivers impressive acceleration and strong top end performance.
Each piston is built to pair with the CPK1081A specification and the 5551 connecting rod, along with the 866 2250 20CP3C wrist pin, 866X063XSWL locks, and CPN 3386 ring set. The forged construction, reinforced ring lands, and carefully contoured crown are intended to survive elevated cylinder pressures and sustained high rpm use. This kit is a natural match for serious performance builds and competition skis.
- Application 2009 2013 Yamaha FX SHO 1.8L engines using 86mm standard bore cylinders.
- Compression ratio 10.5 to 1 for high output turbo or supercharged builds with appropriate fuel and tuning.
- Forged high performance pistons resist cracking and deformation under heavy load and high cylinder pressure.
- Matched with 5551 rod, 866 2250 20CP3C wrist pin, 866X063XSWL locks, and CPN 3386 rings for a cohesive rotating assembly.
- Optimized crown and ring groove design promote efficient combustion, stable sealing, and consistent power delivery.
- Ideal for race focused FX SHO setups and advanced tuners who want to push the platform well beyond stock limits.
For riders and builders targeting the upper edge of FX SHO performance, the CP Carrillo M1081A piston kit provides the forged strength and high compression needed to support serious power. It creates a durable foundation for hard launches, heavy loads, and long days of wide open riding.
