# Wiseco 18 x 23 x 21.8mm Top End Bearing As 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. - Precision manufactured by leading suppliers Inspected for qualityA must for every two-stroke top-end rebuild! - Precision manufactured by leading suppliers - A must for every top-end rebuild - 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 5000 Base 1978-1979 Arctic Cat El Tigre 6000 L/C Base 1998 Arctic Cat EXT 600 Triple Base 1979-1980 Arctic Cat Lynx 2000 Single Base 1979-1981,1985-1990,1992-1993 Arctic Cat Pantera Base 1976-1978 Arctic Cat Pantera 5000 F/A Base 1977-1978 Arctic Cat Pantera 5000 F/C Base 1979 Arctic Cat Panther Base 1997 Arctic Cat Panther 440 Base 1977-1978 Arctic Cat Panther 5000 Base 1998 Arctic Cat Powder Extreme Base 1990-1994 Arctic Cat Prowler Base 1991-1992 Arctic Cat Prowler Special Base 1999-2000 Arctic Cat Triple Touring Base 1976-1977 Arctic Cat Z 440 Base 1997-2000 Arctic Cat ZL 440 Base 1994-1998 Arctic Cat ZR 440 Base 1998-2001 Arctic Cat ZR 440 Sno Pro Base 1996-2000 Arctic Cat ZRT 600 Base 1994-1995 Polaris 300 2x4 Base 1994-1995 Polaris 300 4x4 Base 1985-1991 Polaris 400 Base 1992-1998 Polaris 440 Base 1989-1992,1997-2006 Polaris 500 Base 1995-1996 Polaris 500 Carb Base 1996 Polaris 500 Carb RMK Base 1996 Polaris 500 Carb SKS Base 1999-2006 Polaris 500 Classic Base 1993-1997 Polaris 500 EFI Base 1996 Polaris 500 EFI RMK Base 1993-1996 Polaris 500 EFI SKS Base 1997-2002 Polaris 500 RMK Base 1989-1992,1995,1997 Polaris 500 SKS Base 1989-1992 Polaris 500 SP Base 1992 Polaris 500 SP EFI Base 1992 Polaris 500 SPX Base 1999-2003 Polaris 500 XC Base 1999-2006 Polaris 500 XC SP Base 2002-2006 Polaris 550 Classic Base 2007-2008 Polaris 550 LX Base 2004 Polaris 550 Pro X Fan Base 1985-1987 Polaris 600 Base 1988-1992 Polaris 650 Base 1990-1997 Polaris 650 RXL Base 1995 Polaris 650 RXL LT Base 1991-1993 Polaris 650 RXL SKS Base 1994-1995 Polaris 650 RXL Touring Base 1988-1990 Polaris 650 SKS Base 1999-2002 Polaris 800 XCR Base 1994 Polaris Big Boss 300 6x6 Base 2004 Polaris MSX 110 Base 2004 Polaris MSX 150 Base 1999-2000 Polaris Pro 785 Base 1985-1986 Polaris Scrambler 250 Base 1992-1995 Polaris SL 650 Base 1995 Polaris SL 650 Std Base 1993-1995 Polaris SL 750 Base 1996-1997 Polaris SL 780 Base 1994-1995 Polaris SLT 750 Base 1996-1997 Polaris SLT 780 Base 1995-1996 Polaris SLX 780 Base 1997-1998 Polaris SLX Pro 785 Base 1991-1999 Polaris Sport Base 1985-1986 Polaris SS Base 1994-1998 Polaris Storm Base 1994-2001,2007 Polaris Super Sport Base 1992 Polaris Supertrak Base 1985-1999 Polaris Trail Base 1990-2006 Polaris Trail Blazer 250 Base 1991-1999 Polaris Trail Boss 250 Base 1988-1993 Polaris Trail Boss 250 2x4 Base 1987-1993 Polaris Trail Boss 250 4x4 Base 1985-1988 Polaris Trail Boss 250R/ES Base 1995 Polaris Trail Boss 300 2x4 Base 1995 Polaris Trail Boss 300 4x4 Base 2005-2007 Polaris Trail Touring DLX Base 1997-1998 Polaris Ultra Base 1997-1998 Polaris XCF Base 1996-2000 Polaris Xplorer 300 4x4 Base 1996-1999 Polaris Xpress 300 Base 1977-1981 Suzuki PE250 Base 1977-2008 Suzuki RM250 Base 1989-1998 Suzuki RMX250 Base 1983 Yamaha IT250 Base 1981-1982 Yamaha IT465 Base 1983-1984 Yamaha IT490 Base 1991-1997 Yamaha WR250 Base 1992-1993 Yamaha WR500 Base 1985-1986 Yamaha YTZ250 Tri-Z Base 1982-1998 Yamaha YZ250 Base 1980-1981 Yamaha YZ465 Base 1982-1990 Yamaha YZ490 Base ## Details - **Price:** 55.0 CAD - **Vendor:** Wiseco - **Type:** Bearings ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 55.00 CAD | In stock | ## Images - Photo - Primary - Photo - Primary - Photo - out of package --- > Source: [Standard Auto Part](https://www.standardautopart.com/products/wiseco-18-x-23-x-21-8mm-top-end-bearing) > Updated: 2026-07-14