Description
This CP Carrillo M1077A forged piston kit is engineered for 2009 2013 Yamaha FX SHO 1.8L supercharged engines that need rock solid reliability and clean, repeatable power. The 86mm standard bore maintains the original 1812cc displacement, while the 8.6 to 1 compression ratio is tailored for turbo and supercharged builds where controlling cylinder pressure and detonation is critical. Forged construction gives this piston significantly more strength than cast stock parts, helping the engine live at higher boost and sustained wide open throttle.
Designed as a premium performance replacement, the M1077A piston uses precise machining, tight ring grooves, and a carefully profiled crown to promote efficient combustion and strong ring seal. That means better throttle response, more consistent compression, and reduced blow by compared with tired factory pistons. This kit is ideal for enthusiasts who ride hard, race, or run aggressive ECU calibrations and need the bottom end to keep up.
- Application Yamaha FX SHO 2009 2013 1.8L supercharged engines using 86mm standard bore cylinders.
- Compression ratio 8.6 to 1, a boost friendly spec that works well with higher cylinder pressures and performance tuning.
- Forged piston design built from high strength alloy for outstanding resistance to detonation, cracking, and fatigue at high rpm.
- Works with Carrillo rod 5551, wrist pin 866 2250 18CP3C, locks 866X063XSWL, and CPN 3386 ring set for a matched rotating assembly.
- Improved ring seal and skirt stability help reduce blow by, oil consumption, and power loss over long seasons of use.
- Perfect choice for performance rebuilds, supercharger upgrades, and riders who want dependable power on the water.
Whether you are freshening a worn FX SHO engine or building a forged short block from scratch, the CP Carrillo M1077A kit delivers the durability and precision demanded in serious personal watercraft performance. It provides a strong foundation for higher boost, harder launches, and many hours of confident riding.
