Product Overview
2002-2008 Yamaha YFM 660 Grizzly Wiseco Big Bore Top End Piston Kit 11:1 CR - SKU: 102407 A
Wiseco's complete top end Piston Kits are offered for nearly every popular application in the powersports market. These kits contain everything you need to complete your rebuild the right way, the first time. High quality parts specifically chosen by us to match our forged pistons are included in this kit for easy one stop shopping.
Please note that a few select piston kits do not include a top end gasket or piston pin, Please check our "Item Contents" Below to see exactly what comes in your kit.
- Each piston is built from race proven designs that are chosen by the top race teams in all forms of racing including Supercross, Motocross, GNCC, Superbike, and more.
- 4-stroke kits feature a ‘race-ready’ dome finish with smooth edges for improved combustion flow. Horizontal slot-pin oiling reduces friction and provides scuff resistance, along with a pressure seal groove for maximum ring seal.
- 4-stroke race applications feature Wiseco’s ArmorGlide™ skirt coating to provide reduced friction and noise to contribute to increased horsepower.
- Dedicated forgings used for superior strength to weight ratio utilizing aerospace alloy.
- High Performance ring kit and alloy pin included with each piston kit for extended life and sustained power.
- Made in The USA
Specifications:
- Displacement: 686cc
- Bore - Standard: 100.00mm
- Bore - Actual: 102.00mm
- Bore - Oversize: 2.00mm
- Stroke: 84.00mm
- Compression Ratio - Actual: 11:1
- Note: Cylinder boring required
Item Contents:
- 4014GFX - 101.956mm (4.014") Auto Ring Set- 1 cyl.
- 4811M10200 - Yam Raptor/Grizzly/Rhino 660 11:1 CR
- CW22 - ROUND WIRE PIN LOCKS 22MM (PAIR)
- S655 - Piston Pin - 22 x 14 x 57.15mm SW
- W6429 - Gasket Kit- Yam. Grizzly/Rhino 660 102mm
?Fits:
2002-2008 Yamaha YFM 660 Grizzly
2004-2007 Yamaha Rhino 660
Note: Some Photos for reference only - you will receive parts for model listed.