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| BBI Part Number | Make | Model | Year | Details | Size | Stock | Supplier | Notes | |||
| 1. Piston Kit | |||||||||||
| W6 8315DC | KTM | SX85 | 2003-2025 | 85 SX (Single Ring) | BB 51.97 | IN STOCK | Wossner 81 | 105cc Big Bore Piston | |||
| W6 8327DA | GasGas | EC300 | 2021-2025 | EC300 | 71.94 STD | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8327DA | GasGas | EX300 | 2021-2025 | EX300 | 71.94 STD | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8327DA | GasGas | MC300 | 2025 | MC300 | 71.94 STD | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8327DA | HUSQVARNA | TC300 | 2025 | TC300 | 71.94 STD | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8327DA | HUSQVARNA | TE300 | 2018-2024 | TE300 | 71.94 STD | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8327DA | HUSQVARNA | TX300 | 2019-2024 | TX300 | 71.94 STD | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8327DA | KTM | EXC300 | 2018-2025 | 300 EXC | 71.94 STD | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8327DA | KTM | EXC300 | 2018-2025 | 300 XC/XC-W | 71.94 STD | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8327DA | KTM | SX300 | 2023-2025 | 300 SX | 71.94 STD | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8327DB | GasGas | EC300 | 2021-2025 | EC300 | 71.95 | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8327DB | GasGas | EX300 | 2021-2025 | EX300 | 71.95 | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8327DB | GasGas | MC300 | 2025 | MC300 | 71.95 | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8327DB | HUSQVARNA | TC300 | 2025 | TC300 | 71.95 | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8327DB | HUSQVARNA | TE300 | 2018-2024 | TE300 | 71.95 | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8327DB | HUSQVARNA | TX300 | 2019-2024 | TX300 | 71.95 | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8327DB | KTM | EXC300 | 2018-2025 | 300 EXC | 71.95 | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8327DB | KTM | EXC300 | 2018-2025 | 300 XC/XC-W | 71.95 | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8327DB | KTM | SX300 | 2023-2025 | 300 SX | 71.95 | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8327DC | GasGas | EC300 | 2021-2025 | EC300 | 71.96 | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8327DC | GasGas | EX300 | 2021-2025 | EX300 | 71.96 | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8327DC | GasGas | MC300 | 2025 | MC300 | 71.96 | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8327DC | HUSQVARNA | TC300 | 2025 | TC300 | 71.96 | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8327DC | HUSQVARNA | TE300 | 2018-2024 | TE300 | 71.96 | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8327DC | HUSQVARNA | TX300 | 2019-2024 | TX300 | 71.96 | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8327DC | KTM | EXC300 | 2018-2025 | 300 EXC | 71.96 | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8327DC | KTM | EXC300 | 2018-2025 | 300 XC/XC-W | 71.96 | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8327DC | KTM | SX300 | 2023-2025 | 300 SX | 71.96 | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8328DA | GasGas | MC85 | 2021-2025 | MC85 | 46.95 | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8328DA | HUSQVARNA | TC85 | 2014-2025 | TC85 | 46.95 | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8328DA | KTM | SX85 | 2003-2025 | 85 SX | 46.95 | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8328DB | GasGas | MC85 | 2021-2025 | MC85 | 46.96 | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8328DB | HUSQVARNA | TC85 | 2014-2025 | TC85 | 46.96 | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8328DB | KTM | SX85 | 2003-2025 | 85 SX | 46.96 | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8328DC | GasGas | MC85 | 2021-2025 | MC85 | 46.97 | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8328DC | HUSQVARNA | TC85 | 2014-2025 | TC85 | 46.97 | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8328DC | KTM | SX85 | 2003-2025 | 85 SX | 46.97 | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8329DA | GasGas | MC85 | 2021-2025 | MC85 (Twin Ring) | BB 51.95 | IN STOCK | Wossner 81 | 105cc Big Bore Piston | |||
| W6 8329DA | HUSQVARNA | TC85 | 2014-2025 | TC85 (Twin Ring) | BB 51.95 | IN STOCK | Wossner 81 | 105cc Big Bore Piston | |||
| W6 8329DA | KTM | SX105 | 2004-2011 | 105 SX | 51.95 | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8329DA | KTM | SX105 | 2008-2009 | 105 XC | 51.95 | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8329DA | KTM | SX85 | 2003-2025 | 85 SX (Twin Ring) | BB 51.95 | IN STOCK | Wossner 81 | 105cc Big Bore Piston | |||
| W6 8329DB | GasGas | MC85 | 2021-2025 | MC85 (Twin Ring) | BB 51.96 | IN STOCK | Wossner 81 | 105cc Big Bore Piston | |||
| W6 8329DB | HUSQVARNA | TC85 | 2014-2025 | TC85 (Twin Ring) | BB 51.96 | IN STOCK | Wossner 81 | 105cc Big Bore Piston | |||
| W6 8329DB | KTM | SX105 | 2004-2011 | 105 SX | 51.96 | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8329DB | KTM | SX105 | 2008-2009 | 105 XC | 51.96 | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8329DB | KTM | SX85 | 2003-2025 | 85 SX (Twin Ring) | BB 51.96 | IN STOCK | Wossner 81 | 105cc Big Bore Piston | |||
| W6 8329DC | GasGas | MC85 | 2021-2025 | MC85 (Twin Ring) | BB 51.97 | IN STOCK | Wossner 81 | 105cc Big Bore Piston | |||
| W6 8329DC | HUSQVARNA | TC85 | 2014-2025 | TC85 (Twin Ring) | BB 51.97 | IN STOCK | Wossner 81 | 105cc Big Bore Piston | |||
| W6 8329DC | KTM | SX105 | 2004-2011 | 105 SX | 51.97 | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8329DC | KTM | SX105 | 2008-2009 | 105 XC | 51.97 | IN STOCK | Wossner 81 | Twin Ring | |||
| W6 8329DC | KTM | SX85 | 2003-2025 | 85 SX (Twin Ring) | BB 51.97 | IN STOCK | Wossner 81 | 105cc Big Bore Piston | |||
| W6 8506DA | KTM | EXC400 | 1997-2001 | 400 LC4 | 88.94 | IN STOCK | Wossner 81 | ||||
| W6 8506DA | KTM | EXC400 | 1998-2001 | 400 EXC | 88.94 | IN STOCK | Wossner 81 | ||||
| W6 8506DA | KTM | KTM350 | 1992-1994 | 350 LC4 | 88.94 | IN STOCK | Wossner 81 | ||||
| W6 8506DB | KTM | EXC400 | 1997-2001 | 400 LC4 | 88.95 | IN STOCK | Wossner 81 | ||||
| W6 8506DB | KTM | EXC400 | 1998-2001 | 400 EXC | 88.95 | IN STOCK | Wossner 81 | ||||
| W6 8506DB | KTM | KTM350 | 1992-1994 | 350 LC4 | 88.95 | IN STOCK | Wossner 81 | ||||
| W6 8506DC | KTM | EXC400 | 1997-2001 | 400 LC4 | 88.96 | IN STOCK | Wossner 81 | ||||
| W6 8506DC | KTM | EXC400 | 1998-2001 | 400 EXC | 88.96 | IN STOCK | Wossner 81 | ||||
| W6 8506DC | KTM | KTM350 | 1992-1994 | 350 LC4 | 88.96 | IN STOCK | Wossner 81 | ||||
| W6 8508D100 | KTM | KTM560 | 2005 | 560 EXC | 94.94 | IN STOCK | Wossner 81 | ||||
| W6 8508DA | KTM | KTM560 | 2005 | 560 EXC | 93.94 | IN STOCK | Wossner 81 | NLA - LAST ONES | |||
| W6 8520DA | KTM | EXC400 | 1993-1996 | 400 LC4 | 94.94 STD | IN STOCK | Wossner 81 | ||||
| W6 8520DA | KTM | KTM600 | 1988-1992 | 600 LC4 | 94.94 STD | IN STOCK | Wossner 81 | ||||
| W6 8520DB | KTM | EXC400 | 1993-1996 | 400 LC4 | 94.95 | IN STOCK | Wossner 81 | ||||
| W6 8520DB | KTM | KTM600 | 1988-1992 | 600 LC4 | 94.95 | IN STOCK | Wossner 81 | ||||
| W6 8520DC | KTM | EXC400 | 1993-1996 | 400 LC4 | 94.96 | IN STOCK | Wossner 81 | ||||
| W6 8520DC | KTM | KTM600 | 1988-1992 | 600 LC4 | 94.96 | IN STOCK | Wossner 81 | ||||
| W6 8521DA | KTM | KTM600 | 1993 | 600 LC4 | 99.94 STD | IN STOCK | Wossner 81 | NLA - LAST ONES | |||
| W6 8521DB | KTM | KTM600 | 1993 | 600 LC4 | 99.95 | IN STOCK | Wossner 81 | NLA - LAST ONES | |||
| W6 8521DC | KTM | KTM600 | 1993 | 600 LC4 | 99.96 | IN STOCK | Wossner 81 | NLA - LAST ONES | |||
| W6 8524D100 | KTM | KTM620 | 1994-2007 | 620 SC/ Duke | 101.94 | IN STOCK | Wossner 81 | ||||
| W6 8524D100 | KTM | KTM620 | 1994-2007 | 620 SX | 101.94 | IN STOCK | Wossner 81 | ||||
| W6 8524D100 | KTM | KTM620 | 1994-2007 | 620 LC4 | 101.94 | IN STOCK | Wossner 81 | ||||
| W6 8524D100 | KTM | KTM625 | 1994-2007 | 625 SXC/ Duke | 101.94 | IN STOCK | Wossner 81 | ||||
| W6 8524D100 | KTM | KTM640 | 1994-2007 | 640 LC4 | 101.94 | IN STOCK | Wossner 81 | ||||
| W6 8524D100 | KTM | KTM660 | 2003-2009 | 660 SMC | 101.94 | IN STOCK | Wossner 81 | ||||
| W6 8524DA | KTM | KTM620 | 1994-2007 | 620 SC/ Duke | 100.94 STD | IN STOCK | Wossner 81 | ||||
| W6 8524DA | KTM | KTM620 | 1994-2007 | 620 SX | 100.94 STD | IN STOCK | Wossner 81 | ||||
| W6 8524DA | KTM | KTM620 | 1994-2007 | 620 LC4 | 100.94 STD | IN STOCK | Wossner 81 | ||||
| W6 8524DA | KTM | KTM625 | 1994-2007 | 625 SXC/ Duke | 100.94 STD | IN STOCK | Wossner 81 | ||||
| W6 8524DA | KTM | KTM640 | 1994-2007 | 640 LC4 | 100.94 STD | IN STOCK | Wossner 81 | ||||
| W6 8524DB | KTM | KTM620 | 1994-2007 | 620 SC/ Duke | 100.95 | IN STOCK | Wossner 81 | ||||
| W6 8524DB | KTM | KTM620 | 1994-2007 | 620 SX | 100.95 | IN STOCK | Wossner 81 | ||||
| W6 8524DB | KTM | KTM620 | 1994-2007 | 620 LC4 | 100.95 | IN STOCK | Wossner 81 | ||||
| W6 8524DB | KTM | KTM625 | 1994-2007 | 625 SXC/ Duke | 100.95 | IN STOCK | Wossner 81 | ||||
| W6 8524DB | KTM | KTM640 | 1994-2007 | 640 LC4 | 100.95 | IN STOCK | Wossner 81 | ||||
| W6 8524DC | KTM | KTM620 | 1994-2007 | 620 SC/ Duke | 100.96 | IN STOCK | Wossner 81 | ||||
| W6 8524DC | KTM | KTM620 | 1994-2007 | 620 SX | 100.96 | IN STOCK | Wossner 81 | ||||
| W6 8524DC | KTM | KTM620 | 1994-2007 | 620 LC4 | 100.96 | IN STOCK | Wossner 81 | ||||
| W6 8524DC | KTM | KTM625 | 1994-2007 | 625 SXC/ Duke | 100.96 | IN STOCK | Wossner 81 | ||||
| W6 8524DC | KTM | KTM640 | 1994-2007 | 640 LC4 | 100.96 | IN STOCK | Wossner 81 | ||||
| W6 8547D200 | BETA | Beta525 | 2005-2009 | RR 525 ENDURO 4T | 96.95 | IN STOCK | Wossner 81 | STD Comp- 11.0:1 | |||
| W6 8547D200 | KTM | EXC520 | 2000-2002 | 520 EXC / SX | 96.95 | IN STOCK | Wossner 81 | STD Comp 11.0:1 | |||
| W6 8547D200 | KTM | EXC525 | 2003-2006 | 525 EXC-G/MXC-G/XC-G RACING | 96.95 | IN STOCK | Wossner 81 | STD Comp 11.0:1 | |||
| W6 8547D200 | KTM | EXC525 | 2003-2007 | 525 EXC / SX | 96.95 | IN STOCK | Wossner 81 | STD Comp 11.0:1 | |||
| W6 8547D200 | KTM | EXC525 | 2004-2005 | 525 SM-R | 96.95 | IN STOCK | Wossner 81 | STD Comp 11.0:1 | |||
| W6 8547D200 | KTM | EXC525 | 2008-2012 | 525 XC ATV | 96.95 | IN STOCK | Wossner 81 | STD Comp 11.0:1 | |||
| W6 8547D200 | Polaris | P525 | 2007-2011 | 525 Outlaw | 96.95 | IN STOCK | Wossner 81 | STD Comp 11.0:1 | |||
| W6 8547DA | BETA | Beta525 | 2005-2009 | RR 525 ENDURO 4T | 94.95 | IN STOCK | Wossner 81 | STD Comp 11.0:1 | |||
| W6 8547DA | KTM | EXC520 | 2000-2002 | 520 EXC / SX | 94.95 STD | IN STOCK | Wossner 81 | STD Comp 11.0:1 | |||
| W6 8547DA | KTM | EXC525 | 2003-2006 | 525 EXC-G/MXC-G/XC-G RACING | 94.95 STD | IN STOCK | Wossner 81 | STD Comp 11.0:1 | |||
| W6 8547DA | KTM | EXC525 | 2003-2007 | 525 EXC / SX | 94.95 STD | IN STOCK | Wossner 81 | STD Comp 11.0:1 | |||
| W6 8547DA | KTM | EXC525 | 2004-2005 | 525 SM-R | 94.95 STD | IN STOCK | Wossner 81 | STD Comp 11.0:1 | |||
| W6 8547DA | KTM | EXC525 | 2008-2012 | 525 XC ATV | 94.95 STD | IN STOCK | Wossner 81 | STD Comp 11.0:1 | |||
| W6 8547DA | Polaris | P525 | 2007-2011 | 525 Outlaw | 94.95 | IN STOCK | Wossner 81 | STD Comp 11.0:1 | |||
| W6 8547DB | BETA | Beta525 | 2005-2009 | RR 525 ENDURO 4T | 94.96 | NO STOCK | Wossner 81 | STD Comp 11.0:1 | |||
| W6 8547DB | KTM | EXC520 | 2000-2002 | 520 EXC / SX | 94.96 | NO STOCK | Wossner 81 | STD Comp 11.0:1 | |||
| W6 8547DB | KTM | EXC525 | 2003-2006 | 525 EXC-G/MXC-G/XC-G RACING | 94.96 | NO STOCK | Wossner 81 | STD Comp 11.0:1 | |||
| W6 8547DB | KTM | EXC525 | 2003-2007 | 525 EXC / SX | 94.96 | NO STOCK | Wossner 81 | STD Comp 11.0:1 | |||
| W6 8547DB | KTM | EXC525 | 2004-2005 | 525 SM-R | 94.96 | NO STOCK | Wossner 81 | STD Comp 11.0:1 | |||
| W6 8547DB | KTM | EXC525 | 2008-2012 | 525 XC ATV | 94.96 | NO STOCK | Wossner 81 | STD Comp 11.0:1 | |||
| W6 8547DB | Polaris | P525 | 2007-2011 | 525 Outlaw | 94.96 | NO STOCK | Wossner 81 | STD Comp 11.0:1 | |||
| W6 8547DC | BETA | Beta525 | 2005-2009 | RR 525 ENDURO 4T | 94.97 | IN STOCK | Wossner 81 | STD Comp 11.0:1 | |||
| W6 8547DC | KTM | EXC520 | 2000-2002 | 520 EXC / SX | 94.97 | IN STOCK | Wossner 81 | STD Comp 11.0:1 | |||
| W6 8547DC | KTM | EXC525 | 2003-2006 | 525 EXC-G/MXC-G/XC-G RACING | 94.97 | IN STOCK | Wossner 81 | STD Comp 11.0:1 | |||
| W6 8547DC | KTM | EXC525 | 2003-2007 | 525 EXC / SX | 94.97 | IN STOCK | Wossner 81 | STD Comp 11.0:1 | |||
| W6 8547DC | KTM | EXC525 | 2004-2005 | 525 SM-R | 94.97 | IN STOCK | Wossner 81 | STD Comp 11.0:1 | |||
| W6 8547DC | KTM | EXC525 | 2008-2012 | 525 XC ATV | 94.97 | IN STOCK | Wossner 81 | STD Comp 11.0:1 | |||
| W6 8547DC | Polaris | P525 | 2007-2011 | 525 Outlaw | 94.97 | IN STOCK | Wossner 81 | STD Comp 11.0:1 | |||
| W6 8560D200 | KTM | SXF450 | 2003-2006 | 450 SX RACING | 96.96 | IN STOCK | Wossner 81 | STD 12.0:1 | |||
| W6 8560D200 | KTM | SXF450 | 2004-2007 | 450 SM-R | 96.96 | IN STOCK | Wossner 81 | STD 12.0:1 | |||
| W6 8560DA | KTM | SXF450 | 2003-2006 | 450 SX RACING | 94.96 | IN STOCK | Wossner 81 | STD 12.0:1 | |||
| W6 8560DA | KTM | SXF450 | 2004-2007 | 450 SM-R | 94.96 | IN STOCK | Wossner 81 | STD 12.0:1 | |||
| W6 8560DB | KTM | SXF450 | 2003-2006 | 450 SX RACING | 94.97 | IN STOCK | Wossner 81 | STD 12.0:1 | |||
| W6 8560DB | KTM | SXF450 | 2004-2007 | 450 SM-R | 94.97 | IN STOCK | Wossner 81 | STD 12.0:1 | |||
| W6 8560DC | KTM | SXF450 | 2003-2006 | 450 SX RACING | 94.98 | IN STOCK | Wossner 81 | STD 12.0:1 | |||
| W6 8560DC | KTM | SXF450 | 2004-2007 | 450 SM-R | 94.98 | IN STOCK | Wossner 81 | STD 12.0:1 | |||
| W6 8571D200 | KTM | SXF450 | 2003-2006 | 450 SX RACING | HC 96.96 | IN STOCK | Wossner 81 | Hi Comp (13.5:1 Ratio) | |||
| W6 8571D200 | KTM | SXF450 | 2004-2007 | 450 SM-R | HC 96.96 | IN STOCK | Wossner 81 | Hi Comp (13.5:1 Ratio) | |||
| W6 8571DA | KTM | SXF450 | 2003-2006 | 450 SX RACING | HC 94.96 | IN STOCK | Wossner 81 | Hi Comp (13.5:1 Ratio) | |||
| W6 8571DA | KTM | SXF450 | 2004-2007 | 450 SM-R | HC 94.96 | IN STOCK | Wossner 81 | Hi Comp (13.5:1 Ratio) | |||
| W6 8571DC | KTM | SXF450 | 2003-2006 | 450 SX RACING | HC 94.98 | IN STOCK | Wossner 81 | Hi Comp (13.5:1 Ratio) | |||
| W6 8571DC | KTM | SXF450 | 2004-2007 | 450 SM-R | HC 94.98 | IN STOCK | Wossner 81 | Hi Comp (13.5:1 Ratio) | |||
| W6 8580D200 | KTM | EXC400 | 2000-2002 | 400 SX | 90.94 | IN STOCK | Wossner 81 | ||||
| W6 8580D200 | KTM | EXC400 | 2000-2007 | 400 EXC | 90.94 | IN STOCK | Wossner 81 | ||||
| W6 8580DA | KTM | EXC400 | 2000-2002 | 400 SX | 88.94 STD | IN STOCK | Wossner 81 | ||||
| W6 8580DA | KTM | EXC400 | 2000-2007 | 400 EXC | 88.94 STD | IN STOCK | Wossner 81 | ||||
| W6 8580DB | KTM | EXC400 | 2000-2002 | 400 SX | 88.95 | NO STOCK | Wossner 81 | ||||
| W6 8580DB | KTM | EXC400 | 2000-2007 | 400 EXC | 88.95 | NO STOCK | Wossner 81 | ||||
| W6 8580DC | KTM | EXC400 | 2000-2002 | 400 SX | 88.96 | IN STOCK | Wossner 81 | ||||
| W6 8580DC | KTM | EXC400 | 2000-2007 | 400 EXC | 88.96 | IN STOCK | Wossner 81 | ||||
| W6 8581DA | BETA | Beta450 | 2005-2009 | RR 450 ENDURO 4T | 88.96mm (STD Comp 11.1:1) | IN STOCK | Wossner 81 | Forged Piston | |||
| W6 8581DA | KTM | EXCF450 | 2003-2005 | 450 MXC-G (Racing) | 88.96mm (STD Comp 11.1:1) | IN STOCK | Wossner 81 | Forged Piston | |||
| W6 8581DA | KTM | EXCF450 | 2003-2006 | 450 EXC-G (Racing) | 88.96mm (STD Comp 11.1:1) | IN STOCK | Wossner 81 | Forged Piston | |||
| W6 8581DA | KTM | EXCF450 | 2003-2007 | 450 EXC (Racing) | 88.96mm (STD Comp 11.1:1) | IN STOCK | Wossner 81 | Forged Piston | |||
| W6 8581DA | KTM | KTM450 | 2008-2009 | 450 XC ATV | 88.96mm (STD Comp 11.1:1) | IN STOCK | Wossner 81 | Forged Piston | |||
| W6 8581DA | KTM | KTM450 | 2009-2010 | 450 SX ATV | 88.96mm (STD Comp 11.1:1) | IN STOCK | Wossner 81 | Forged Piston | |||
| W6 8581DA | Polaris | P450 | 2008-2010 | 450 Outlaw MXR | 88.96mm (STD Comp 11.1:1) | IN STOCK | Wossner 81 | Forged Piston | |||
| W6 8581DB | BETA | Beta450 | 2005-2009 | RR 450 ENDURO 4T | 88.97mm (STD Comp 11.1:1) | IN STOCK | Wossner 81 | Forged Piston | |||
| W6 8581DB | KTM | EXCF450 | 2003-2005 | 450 MXC-G (Racing) | 88.97mm (STD Comp 11.1:1) | IN STOCK | Wossner 81 | Forged Piston | |||
| W6 8581DB | KTM | EXCF450 | 2003-2006 | 450 EXC-G (Racing) | 88.97mm (STD Comp 11.1:1) | IN STOCK | Wossner 81 | Forged Piston | |||
| W6 8581DB | KTM | EXCF450 | 2003-2007 | 450 EXC (Racing) | 88.97mm (STD Comp 11.1:1) | IN STOCK | Wossner 81 | Forged Piston | |||
| W6 8581DB | KTM | KTM450 | 2008-2009 | 450 XC ATV | 88.97mm (STD Comp 11.1:1) | IN STOCK | Wossner 81 | Forged Piston | |||
| W6 8581DB | KTM | KTM450 | 2009-2010 | 450 SX ATV | 88.97mm (STD Comp 11.1:1) | IN STOCK | Wossner 81 | Forged Piston | |||
| W6 8581DB | Polaris | P450 | 2008-2010 | 450 Outlaw MXR | 88.97mm (STD Comp 11.1:1) | IN STOCK | Wossner 81 | Forged Piston | |||
| W6 8581DC | BETA | Beta450 | 2005-2009 | RR 450 ENDURO 4T | 88.98mm (STD Comp 11.1:1) | IN STOCK | Wossner 81 | Forged Piston | |||
| W6 8581DC | KTM | EXCF450 | 2003-2005 | 450 MXC-G (Racing) | 88.98mm (STD Comp 11.1:1) | IN STOCK | Wossner 81 | Forged Piston | |||
| W6 8581DC | KTM | EXCF450 | 2003-2006 | 450 EXC-G (Racing) | 88.98mm (STD Comp 11.1:1) | IN STOCK | Wossner 81 | Forged Piston | |||
| W6 8581DC | KTM | EXCF450 | 2003-2007 | 450 EXC (Racing) | 88.98mm (STD Comp 11.1:1) | IN STOCK | Wossner 81 | Forged Piston | |||
| W6 8581DC | KTM | KTM450 | 2008-2009 | 450 XC ATV | 88.98mm (STD Comp 11.1:1) | IN STOCK | Wossner 81 | Forged Piston | |||
| W6 8581DC | KTM | KTM450 | 2009-2010 | 450 SX ATV | 88.98mm (STD Comp 11.1:1) | IN STOCK | Wossner 81 | Forged Piston | |||
| W6 8581DC | Polaris | P450 | 2008-2010 | 450 Outlaw MXR | 88.98mm (STD Comp 11.1:1) | IN STOCK | Wossner 81 | Forged Piston | |||
| W6 8583DA | KTM | EXC540 | 2006 | 540 SXS RACING | 99.95 STD | IN STOCK | Wossner 81 | ||||
| W6 8583DB | KTM | EXC540 | 2006 | 540 SXS RACING | 99.96 | IN STOCK | Wossner 81 | ||||
| W6 8583DC | KTM | EXC540 | 2006 | 540 SXS RACING | 99.97 | IN STOCK | Wossner 81 | ||||
| W6 8592DA | BETA | Beta250F | 2005-2007 | RR 250 ENDURO 4T | HC 74.95 | IN STOCK | Wossner 81 | Hi Comp (12.8:1 Ratio) | |||
| W6 8592DA | BETA | Beta250F | 2015-2019 | RR 250 ENDURO 4T | HC 74.95 | IN STOCK | Wossner 81 | Hi Comp (12.8:1 Ratio) | |||
| W6 8592DA | KTM | EXCF250 | 2001-2006 | 250 EXC RACING 4T | HC 74.95 | IN STOCK | Wossner 81 | Hi Comp (12.8:1 Ratio) | |||
| W6 8592DB | BETA | Beta250F | 2005-2007 | RR 250 ENDURO 4T | HC 74.96 | IN STOCK | Wossner 81 | Hi Comp (12.8:1 Ratio) | |||
| W6 8592DB | BETA | Beta250F | 2015-2019 | RR 250 ENDURO 4T | HC 74.96 | IN STOCK | Wossner 81 | Hi Comp (12.8:1 Ratio) | |||
| W6 8592DB | KTM | EXCF250 | 2001-2006 | 250 EXC RACING 4T | HC 74.96 | IN STOCK | Wossner 81 | Hi Comp (12.8:1 Ratio) | |||
| W6 8592DC | BETA | Beta250F | 2005-2007 | RR 250 ENDURO 4T | HC 74.97 | NO STOCK | Wossner 81 | Hi Comp (12.8:1 Ratio) | |||
| W6 8592DC | BETA | Beta250F | 2015-2019 | RR 250 ENDURO 4T | HC 74.97 | NO STOCK | Wossner 81 | Hi Comp (12.8:1 Ratio) | |||
| W6 8592DC | KTM | EXCF250 | 2001-2006 | 250 EXC RACING 4T | HC 74.97 | NO STOCK | Wossner 81 | Hi Comp (12.8:1 Ratio) | |||
| W6 8636D200 | KTM | EXC400 | 2000-2002 | 400 SX | 90.94 (HC 12.5:1) | IN STOCK | Wossner 81 | NLA - LAST ONES | |||
| W6 8636D200 | KTM | EXC400 | 2000-2007 | 400 EXC | 90.94 (HC 12.5:1) | IN STOCK | Wossner 81 | NLA - LAST ONES | |||
| W6 8636DA | KTM | EXC400 | 2000-2002 | 400 SX | 88.94 (HC 12.5:1) | IN STOCK | Wossner 81 | ||||
| W6 8636DA | KTM | EXC400 | 2000-2007 | 400 EXC | 88.94 (HC 12.5:1) | IN STOCK | Wossner 81 | ||||
| W6 8637D200 | BETA | Beta525 | 2005-2009 | RR 525 ENDURO 4T | HC 96.95 | NO STOCK | Wossner 81 | Hi Comp (12.5:1 Ratio) | |||
| W6 8637D200 | KTM | EXC520 | 2000-2002 | 520 EXC / SX | HC 96.95 | NO STOCK | Wossner 81 | Hi Comp (12.5:1 Ratio) | |||
| W6 8637D200 | KTM | EXC525 | 2003-2006 | 525 EXC-G RACING | HC 96.95 | NO STOCK | Wossner 81 | Hi Comp (12.5:1 Ratio) | |||
| W6 8637D200 | KTM | EXC525 | 2003-2007 | 525 EXC / SX | HC 96.95 | NO STOCK | Wossner 81 | Hi Comp (12.5:1 Ratio) | |||
| W6 8637D200 | KTM | EXC525 | 2004-2005 | 525 SM-R | HC 96.95 | NO STOCK | Wossner 81 | Hi Comp (12.5:1 Ratio) | |||
| W6 8637D200 | KTM | EXC525 | 2008-2012 | 525 XC ATV | HC 96.95 | NO STOCK | Wossner 81 | Hi Comp (12.5:1 Ratio) | |||
| W6 8637D200 | Polaris | P525 | 2007-2011 | 525 Outlaw | HC 96.95 | NO STOCK | Wossner 81 | Hi Comp (12.5:1 Ratio) | |||
| W6 8637DA | BETA | Beta525 | 2005-2009 | RR 525 ENDURO 4T | HC 94.95 | NO STOCK | Wossner 81 | Hi Comp (12.5:1 Ratio) | |||
| W6 8637DA | KTM | EXC520 | 2000-2002 | 520 EXC / SX | HC 94.95 | NO STOCK | Wossner 81 | Hi Comp (12.5:1 Ratio) | |||
| W6 8637DA | KTM | EXC525 | 2003-2006 | 525 EXC-G RACING | HC 94.95 | NO STOCK | Wossner 81 | Hi Comp (12.5:1 Ratio) | |||
| W6 8637DA | KTM | EXC525 | 2003-2007 | 525 EXC / SX | HC 94.95 | NO STOCK | Wossner 81 | Hi Comp (12.5:1 Ratio) | |||
| W6 8637DA | KTM | EXC525 | 2004-2005 | 525 SM-R | HC 94.95 | NO STOCK | Wossner 81 | Hi Comp (12.5:1 Ratio) | |||
| W6 8637DA | KTM | EXC525 | 2008-2012 | 525 XC ATV | HC 94.95 | NO STOCK | Wossner 81 | Hi Comp (12.5:1 Ratio) | |||
| W6 8637DA | Polaris | P525 | 2007-2011 | 525 Outlaw | HC 94.95 | NO STOCK | Wossner 81 | Hi Comp (12.5:1 Ratio) | |||
| W6 8637DB | BETA | Beta525 | 2005-2009 | RR 525 ENDURO 4T | HC 94.96 | IN STOCK | Wossner 81 | Hi Comp (12.5:1 Ratio) | |||
| W6 8637DB | KTM | EXC520 | 2000-2002 | 520 EXC / SX | HC 94.96 | IN STOCK | Wossner 81 | Hi Comp (12.5:1 Ratio) | |||
| W6 8637DB | KTM | EXC525 | 2003-2006 | 525 EXC-G RACING | HC 94.96 | IN STOCK | Wossner 81 | Hi Comp (12.5:1 Ratio) | |||
| W6 8637DB | KTM | EXC525 | 2003-2007 | 525 EXC / SX | HC 94.96 | IN STOCK | Wossner 81 | Hi Comp (12.5:1 Ratio) | |||
| W6 8637DB | KTM | EXC525 | 2004-2005 | 525 SM-R | HC 94.96 | IN STOCK | Wossner 81 | Hi Comp (12.5:1 Ratio) | |||
| W6 8637DB | KTM | EXC525 | 2008-2012 | 525 XC ATV | HC 94.96 | IN STOCK | Wossner 81 | Hi Comp (12.5:1 Ratio) | |||
Note: Pricing and availability information last updated on Tuesday 20th October 2026 at 6:01am.





