High-performance, cast pistons closely match original equipment Engineered for the best possible heat transfer from combustion chamber to cylinder walls Rings are replacement for one piston All pistons are priced with ring(s), wrist pins and circlips - Ski-Doo Grand Touring 700 SE (1997, 1998); Ski-Doo Mach 1 (1997, 1998, 2000, 1999); Ski-Doo Formula III 700R (1998, 2000); Ski-Doo Mach 1 R (1998, 1999, 2000); Ski-Doo Formula III 700 (2000, 1999, 1998); Ski-Doo Grand Touring 700 (1998, 1999, 2000)