Included is two piston kits pistons, rings, circlips and wrist pins Manufactured by SPI T-Moly series pistons feature silicone aluminum alloy construction with teflon and molybdenum coating and a hard anodized crown Manufactured to OEM Specifications All kits are interchangeable with OEM components Works in both cast and chrome cylinders Pistons are for standard bore size 88.00mm Made in Taiwan Fits 2005 Ski-Doo 1000 Mach Z Adrenaline SDI 2005 Ski-Doo 1000 Summit Highmark SDI 2005 Ski-Doo 1000 Summit Highmark X SDI 2006 Ski-Doo 1000 Mach Z Adrenaline SDI 2006 Ski-Doo 1000 Mach Z X SDI 2006 Ski-Doo 1000 MXZ Renegade X SDI 2006 Ski-Doo 1000 Summit Highmark SDI 2006 Ski-Doo 1000 Summit Highmark X SDI 2007 Ski-Doo 1000 Mach Z Adrenaline SDI 2007 Ski-Doo 1000 Mach Z X SDI 2007 Ski-Doo 1000 MXZ Renegade SDI 2007 Ski-Doo 1000 MXZ Renegade X SDI 2007 Ski-Doo 1000 Summit Highmark SDI 2007 Ski-Doo 1000 Summit Highmark X SDI