Premium materials produce the best sealing technology available exceeding O.E.M. standards. 2-Stroke: Wiseco top end gasket kit; Dedicated forging; Superior strength/weight ratio utilizing Aerospace alloy; Race-proven designs; Chosen by top race teams, in all forms of racing; CNC machined; Optimal cam shape and profile for peak HP and service life; Premium top end needle bearing; Precision-machined, highest-quality materials for strength and reduced friction; High-performance ring set; Extended life and sustained power; Highest-quality alloy pin; Consistently true and durable. 4-Stroke: Wiseco top end gasket kit; Premium materials produce the best sealing technology available, exceeding O.E.M. standards; Dedicated forging; Superior strength/weight ratio utilizing Aerospace alloy; Dome design; Improved flame travel; Chrome plated piston pin; Horizontal slot pin oiling; Reduced friction/scuff resistant; Pressure seal groove; Maximum ring seal; Armor Glide Skirt-Coated available for select models; Dedicated Rings; Maximum compression and oil control.
Features:| Years | Make | Model | Trim | ||
|---|---|---|---|---|---|
| 2008 - 2013 | Yamaha | YFM350 Grizzly 4x4 Auto | Base | ||
| 2008 - 2013 | Yamaha | YFM350 Grizzly Auto | Base | ||
| 2008 - 2012 | Yamaha | YFM350 Grizzly IRS 4x4 Auto | Base | ||
| 2005 - 2013 | Yamaha | YFM350 Raptor | Base | ||
| 1989 - 1999 | Yamaha | YFM350FW Big Bear 4x4 | Base | ||
| 1996 - 1999 | Yamaha | YFM350U Big Bear 2x4 | Base | ||
| 1987 - 2004 | Yamaha | YFM350X Warrior | Base |
For more information on Wiseco part number PK1020, you can visit the official Wiseco website.