Manufactured by Namura Kit includes piston, rings, pin, clips you get exactly what is pictured Cast piston has super-high silicone content for additional strength Piston skirts are Molybdenium Teflon coated to minimize resistance/wear and provide extended life Piston dome is anodized for superior heat resistance and longer lifespan Kit is for standard bore size 83.00mm Piston is 82.95mm 9.2 1 Standard compression ratio Made in Taiwan Fits 2004 Yamaha Raptor 350 YFM350R 2005 Yamaha Raptor 350 YFM350R 2006 Yamaha Raptor 350 YFM350R 2007 Yamaha Raptor 350 YFM350R 2008 Yamaha Raptor 350 YFM350R 2009 Yamaha Raptor 350 YFM350R 2010 Yamaha Raptor 350 YFM350R 2011 Yamaha Raptor 350 YFM350R 2012 Yamaha Raptor 350 YFM350R 2013 Yamaha Raptor 350 YFM350R