Description
The CP Carrillo M1078A piston kit is aimed at Yamaha FX SHO owners who want a forged upgrade with a crisper feel and stronger mid range thanks to a 9.5 to 1 compression ratio. Keeping the 86mm standard bore preserves stock displacement while the higher compression sharpens throttle response and helps the engine pull harder off the line and out of turns. This makes the M1078A an excellent option for naturally aspirated builds or moderate boost levels where drivability and punch are just as important as peak numbers.
Each piston is forged from high quality aluminum alloy and finished to the tight tolerances that CP Carrillo is known for. Supplied with rings, clips, and wrist pin, the kit gives each cylinder a complete matched set of components that seat quickly and seal consistently. The result is smooth running, strong compression, and dependable performance even when the ski is pushed in hot, demanding conditions.
- Fitment Yamaha FX SHO 1.8L engines using the original 86mm standard bore cylinders.
- Compression ratio 9.5 to 1 for improved torque and acceleration compared with lower compression turbo spec pistons.
- Forged construction offers superior strength and fatigue resistance over OEM cast pistons in high rpm use.
- Kit includes piston, wrist pin, rings, and clips for each cylinder to simplify ordering and assembly.
- Precision ring grooves and skirt design help minimize blow by, reduce friction, and improve long term reliability.
- Ideal for tuned recreational skis, ECU flashes, intake and exhaust upgrades, and riders who want a more responsive machine.
If you are rebuilding or upgrading a Yamaha FX SHO and want a forged piston kit that balances reliability with sharper performance, the M1078A is a smart choice. It delivers a noticeable step up in response and mid range power while maintaining the quality and consistency associated with CP Carrillo components.
