Includes 2 SPI pistons 2 ring sets 2 wrist pins 2 circlip sets 2 wrist pin bearings 1 SPI complete gasket kit This kit is .020 Over bore 72.5mm Fits the following fan cooled models 1995 1999 Ski-Doo Formula 500 SL 1999 2001 Ski-Doo Formula Deluxe 500F 2002 Ski-Doo Grand Touring 500F 2002 Ski-Doo Legend 500F 2001 2002 Ski-Doo MXZ 500F 1993 Ski-Doo Safari 503 Rally 1994 Ski-Doo Safari 503 Rally E 1993 Ski-Doo Skandic 503 R 1994 Ski-Doo Skandic 503 1995 2000 Ski-Doo Skandic 500 1993 1994 Ski-Doo Skandic 503 R SLT 2003 Ski-Doo Skandic 500 Sport 1998 2003 Ski-Doo Skandic 500 SWT 1998 2003 Ski-Doo Skandic 500 WT Fan cooled model only 2001 2002 Ski-Doo Summit 500F 1995 2000 Ski-Doo Touring 500 SLE 2001 Ski-Doo Touring 500F