- Engineered, forged, and machined in the USA
- Designed and built for each specific 4-stroke powersports engine
- Improved tensile strength of forged material optimizes strength and service life
- Dedicated forgings and additional lightening operations allow for optimized strength-to-weight ratio
- Includes high-quality piston ring(s), wrist pin(s), and circlips
| Compatible Vehicles | |||
| Years | Make | Make | Notes |
| 1987-1999 | Yamaha | Big Bear 350 YFM350FW 4x4 | |
| 1997-1999 | Yamaha | Big Bear 350 YFM350U | |
| 2014 | Yamaha | Grizzly 350 YFM350D 4x4 | |
| 2007-2013 | Yamaha | Grizzly 350 YFM350FG 4x4 | |
| 2012 | Yamaha | Grizzly 350 YFM350FG 4x4 IRS | |
| 2007-2011 | Yamaha | Grizzly 350 YFM350FGI 4x4 IRS | |
| 2007-2012 | Yamaha | Grizzly 350 YFM350G | |
| 1987-1995 | Yamaha | Moto 4 YFM350ER | |
| 2004 | Yamaha | Raptor 350 YFM350 | |
| 2005-2013 | Yamaha | Raptor 350 YFM350R | |
| 1987-2004 | Yamaha | Warrior 350 YFM350X | |
| 1995-2005 | Yamaha | Wolverine 350 YFM350FX 4x4 | |
| 2006-2009 | Yamaha | Wolverine 350 YFM350X | |