Description
The CP Carrillo M1088 piston kit is built for Yamaha FX SHO owners who need a 0.25mm oversize bore and want the added punch of a 9.5 to 1 compression ratio in a forged package. The 86.25mm bore increases displacement to roughly 1827cc, while the higher compression sharpens throttle response and mid range pull. This combination is especially attractive for performance builds that prioritize strong acceleration and crisp power delivery.
Each M1088 piston is forged from high strength aluminum and is part of the CPK1088 configuration, working with the 5551 connecting rod, 866 2250 18CP3C wrist pin, 866X063XSWL locks, and CPN 3396 ring set. The design focuses on robust ring lands, precise ring grooves, and a crown shape that supports efficient combustion. The result is a piston kit capable of surviving hard use in tuned and boosted FX SHO skis.
- Application 2009 2013 Yamaha FX SHO 1.8L engines bored to 86.25mm 0.25mm over.
- Compression ratio 9.5 to 1 for stronger torque and quicker response compared with lower compression turbo pistons.
- Forged oversize pistons strengthen the short block and correct cylinder wear at the same time.
- Intended for use with 5551 rod, 866 2250 18CP3C pin, 866X063XSWL locks, and CPN 3396 rings.
- Engineered ring pack and crown design support clean burn, solid seal, and reliable performance at elevated boost and rpm.
- Well suited for tuned recreational machines, ECU flashes, larger impellers, and more aggressive overall setups.
If your FX SHO engine needs an overbore and you want to step up compression with forged strength, the CP Carrillo M1088 kit is a powerful option. It helps turn a tired engine into a responsive, hard pulling package ready for serious time on the water.
