Manufactured by SPI & Made in Taiwan Included is 2 pistons, ring sets, circlips, wrist pin, wrist pin bearings & top end gasket kit T-Moly series pistons with Teflon-molybdenum coating Top end gasket kit contains all gaskets pictured to rebuild top end (oil seals not included) Pistons are for standard bore size 88.00mm Compatible with Ski-Doo models below: 2005 Mach Z 1000 Adrenaline SDI 2005 Summit 1000 Highmark SDI 2005 Summit 1000 Highmark X SDI 2006 Mach Z 1000 Adrenaline SDI 2006 Mach Z 1000 X SDI 2006 MXZ 1000 Renegade X SDI 2006 Summit 1000 Highmark SDI 2006 Summit 1000 Highmark X SDI 2007 Mach Z 1000 Adrenaline SDI 2007 Mach Z 1000 X SDI 2007 MXZ 1000 Renegade SDI 2007 MXZ 1000 Renegade X SDI 2007 Summit 1000 Highmark SDI 2007 Summit 1000 Highmark X SDI