Wiseco 18 x 23 x 21.8mm Top End BearingAs the leading manufacturer of forged two stroke pistons, Wiseco knows top end bearings are crucial to your top end rebuild. Wiseco two stroke top end bearings are manufactured by leading bearing suppliers and inspected for quality. This Part Fits: Year Make Model Submodel 1993 1994 Arctic Cat Cheetah 440 Base 1976 1977 Arctic Cat Cheetah 500 Base 1986 1988 Arctic Cat Cheetah 500 F C Base 1985 1994 Arctic Cat Cougar Base 1987 1988 Arctic Cat El Tigre