Wiseco

Wiseco Yamaha YFM660 Grizzly/Rhino 9.91 (4966M10000) Piston Kit

SKU PK1435

MPN wisPK1435

$328.99 · Available to order

Wiseco Yamaha YFM660 Grizzly/Rhino 9.91 (4966M10000) Piston Kit

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.

Confirmed vehicle fitment
YearsMakeModelSubmodelDrive
2002–2008YamahaYFM660F Grizzly 4x4Base
2007YamahaYXR66F Rhino 660 Sport EditionBase
2006–2007YamahaYXR66F Rhino 660 Special EditionBase
2006–2007YamahaYXR66F Rhino 660 Exploring EditionBase
2005–2007YamahaYXR66F Rhino 660Base
2007YamahaYXR66F Rhino 660 Ducks UnlimitedBase
Specifications
CategoryEngine Components
Sub-CategoryPiston Sets - Powersports
UPC193564148759
CARB ApprovedNo
Prop 65 WarningY
Special OrderYes
Weight1 lb
Dimensions (L×W×H)4.9 × 4.9 × 4.3 in