Description:

Replaces OEM Part Numbers: Yamaha 4GB-11631-00-Y0, 4GB-11610-00-00,42Y-11610-00-00, 42Y-11610-01-00 4X7-11610-02-00, 51Y-11633-00-00,93450-19095-00, 1UY-11181-01-00 1UY-11181-00-00. Compatible with the 1993-1999 Yamaha Kodiak 400, 2000-2012 Yamaha Big Bear 400. Includes Piston, Piston Rings, Wristpin, Circlips, Head Gasket. Also Includes Base Gasket, O-Ring, and Chain Tensioner Gasket. High-Quality Cast Aluminum Piston for Superior Strength to Weight Ratio, 83mm Bore, 8.6:1 Compression Ratio.