Wiseco Forged 83.50mm Piston & Top End Gasket Kit (PK1019)
- 10.25:1 Compression Ratio
- Bore Oversize +0.50mm
- 4-stroke
- Non-coated
- Complete piston kit includes pistons, rings, wrist pins, circlips and top-end gasket kit for one complete engine
- Optimized compression ratio to fit your build and performance goals
- Designed and built specifically for each V-Twin engine platform
- Improved tensile strength of forged material optimizes strength and service life
- Engineered, forged, and machined in the USA
- Wiseco ring types are not interchangeable (i.e., CD is not interchangeable with LC)
- Wiseco pistons can be fitted only with Wiseco rings
- Cylinder sleeves must be purchased separately.
| 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 YFM350 4x4 Auto | |
| 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 | |