Bottom End

Made from 7075 lightweight aluminumProlong engine life by pulling metal filings out of the oilUltra-powerful magnetsCome with either O-ring or washer sealing surfaceCompare with original OEM plug before installingMade in the U.S.A. Yamaha -- YZ 450 F --...

Made from 7075 lightweight aluminumProlong engine life by pulling metal filings out of the oilUltra-powerful magnetsCome with either O-ring or washer sealing surfaceCompare with original OEM plug before installingMade in the U.S.A. KTM -- 525 XC Racing...

Made from 7075 lightweight aluminumProlong engine life by pulling metal filings out of the oilUltra-powerful magnetsCome with either O-ring or washer sealing surfaceCompare with original OEM plug before installingMade in the U.S.A. KTM -- 50 Junior...

Made from 7075 lightweight aluminumProlong engine life by pulling metal filings out of the oilUltra-powerful magnetsCome with either O-ring or washer sealing surfaceCompare with original OEM plug before installingMade in the U.S.A. Suzuki -- LT-V 700 F...

Made from 7075 lightweight aluminumProlong engine life by pulling metal filings out of the oilUltra-powerful magnetsCome with either O-ring or washer sealing surfaceCompare with original OEM plug before installingMade in the U.S.A.

BREATHER KIT BIG TWINMYSTFREE KITMachined 6061-T6 billet aluminum constructionHelps oil drain more efficiently into the rocker boxesReduces oil misting coming from the engine breathersMade in the U.S.A.

More power and acceleration with up to 2 horsepower gainDegrees of advance depend upon stroke, rod location and offsetSimple timing option for fixed stator platesWork with both stock and modified enginesNOTE: More timing offset equals more heat, so...

More power and acceleration with up to 2 horsepower gainDegrees of advance depend upon stroke, rod location and offsetSimple timing option for fixed stator platesWork with both stock and modified enginesNOTE: More timing offset equals more heat, so...

More power and acceleration with up to 2 horsepower gainDegrees of advance depend upon stroke, rod location and offsetSimple timing option for fixed stator platesWork with both stock and modified enginesNOTE: More timing offset equals more heat, so...

Wossner Crankshaft Assembly - Honda Cs4001 Honda -- CRF250R -- (2013, 2010, 2011, 2012)

Crankshaft Assembly - Yamaha Cs2077 Yamaha -- YZ 125 -- (2024, 2022, 2023); Yamaha -- YZ 125 Monster Energy Racing -- (2023, 2022); Yamaha -- YZ 125 X -- (2023, 2024)

Wossner Crankshaft Assembly - Yamaha Cs2071 Yamaha -- YZ 65 -- (2020, 2022, 2021, 2018, 2019, 2023, 2024)