SPI, 09-813-01, (2) SPI Piston Kits Yamaha Phazer 480 500 Venture GTS XL Mountain Lite .010 Over Manufactured by SPI OEM style piston kits Includes: 2 pistons, ring sets, wrist pins, & circlips Engineered to provide the best possible path for combustion chamber heat transfer to the cylinder walls All pistons, rings pins, and circlips are manufactured to OEM specifications All individual components are interchangeable with original parts Piston weight compatible with original piston