Seller notes

Wiseco 100.50 mm 9.9:1 Compression ATV Piston Kit with Top-End Gasket Kit This item fits the following models: Yamaha YFM660R Raptor 2005 Yamaha YFM660R Raptor 2004 Yamaha YFM660R Raptor 2003 Yamaha YFM660R Raptor 2002 Yamaha YFM660R Raptor 2001 Type: Piston Kit Style: Forged Note: +.50mm over standard bore Displacement: 666cc Compression Ratio: 9.9:1 Stroke: 84.00mm Packaging: Kit Material: Aluminum Bore: 100.50mm Sold as: Kit Wiseco-forged high-silicon aluminum alloy pistons are computer-machi...

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