Wiseco Bottom End Gasket Kit 00-04 AC 600cc GasketWiseco's bottom end rebuild kits help save time and money for your dirt bike, ATV, or UTV bottom end rebuild. Available for many popular applications, these kits contain a crankshaft assembly, main bearings, and a bottom end gasket kit, all in one box under one part number. This Part Fits: Year Make Model Submodel 2001 2002,2004 Arctic Cat Mountain Cat 600 EFI Base 2003 Arctic Cat Mountain Cat 600 EFI 136 Base 2003 Arctic Cat Mountain Cat 600 EFI 144