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 - Arctic Cat ZL 500 (1998, 1999, 2000); Arctic Cat ZR 500 LE EFI (1999); Arctic Cat ZR 500 EFI (2000, 1999); Arctic Cat ZR 500 (2000, 1998, 1999); Arctic Cat Powder Special 500 Limited EFI (2000); Arctic Cat Powder Special 500 EFI (2000, 1999); Arctic Cat ZL 500 EFI (1999, 2000)