Description
If you’re rebuilding your Yamaha YFM550 Grizzly or pushing performance limits on the trail and at the track, a quality piston kit is non-negotiable. Wiseco’s forged high-silicon alloy construction delivers the durability and precision needed for sustained power delivery, while the 10.25:1 compression ratio unlocks measurable performance gains without requiring extensive engine modifications. This complete kit—rings and circlips included—installs as a bolt-in solution for both recreational riders and competitive racers.
- High-silicon alloy construction
- 10.25:1 compression ratio
- 92mm bore diameter
- Forged piston design
- Includes rings, circlips
- Yamaha YFM550 Grizzly specific
- 2009–2013 model compatibility
- Trail and racing capable
- Complete installation kit
- Wiseco precision engineering
- MPN: 40104M09200
