Top End

Progressively wound springs using Kobe super-clean, chrome silicon-based wire that is heat treated and shot peenedTight-tolerance, FEA-designed hardened steel Posi-Loc? style upper retainers to ensure correct assembly height and resist keeper "pull...

Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylindersNickel Silicon Carbide plated for long lifeBig bore cylinders do not require machine workMade in the U.S.A. Yamaha -- YZ 250 F -- (2003,...

Maintain peak performanceCNC-machinedHard anodized finishMade in the U.S.A. Yamaha -- YZ 250 -- (2021, 2020, 2022, 2024, 2023, 1999, 2000, 2010, 2013, 2017, 2002, 2005, 2011, 2007, 2004, 2015, 2001, 2009, 2012, 2003, 2006, 2016, 2008, 2014, 2019, 2018)

Top End Piston Kit - 95.45 Mm - Suzuki Lt-R450 Vtktc23553A Suzuki -- LT-R 450 QuadRacer -- (2006, 2008, 2007, 2009)

All pistons are heat-treated with a T-5 hardening and tempering cycleAll piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston lifeForged pistons are forged from 2618 aluminum for superior...

The foremost compatible top-end rebuild kit all in one boxFeature a Moly2000 centrifugally-spun, cast cylinder sleeved iron bore to provide better ring seal for better compression, more torque and more horsepower2-stroke kit comes complete with...

The foremost compatible top-end rebuild kit all in one boxFeature a Moly2000 centrifugally-spun, cast cylinder sleeved iron bore to provide better ring seal for better compression, more torque and more horsepower2-stroke kit comes complete with...

The foremost compatible top-end rebuild kit all in one boxFeature a Moly2000 centrifugally-spun, cast cylinder sleeved iron bore to provide better ring seal for better compression, more torque and more horsepower2-stroke kit comes complete with...

2-stoke pistons include piston, rings, pin and clipsPiston made with high quality, permanent skirt coating to reduce friction and piston rock for quiet and improved performance4032 T6 Forged Aluminum AlloyGerman Engineered from Wossner?s own designs and...

Top End Piston Kit - 94.96 Mm - Yamaha Vtktc23551B Yamaha -- YFZ 450 LE 4x2 -- (2004); Yamaha -- YFZ 450 SE 4x2 -- (2006, 2007, 2008); Yamaha -- YFZ 450 Bill Balance Edition 4x2 -- (2006, 2007); Yamaha -- YFZ 450 4x2 -- (2006, 2004, 2009, 2013, 2008,...

Top End Piston Kit - 95.96 Mm - Honda Crf450R Vtktc22900B Honda -- CRF450R -- (2006, 2004, 2005, 2002, 2003)

All components made in the U.S.A. Kawasaki -- Ninja ZX-10R -- (2010, 2008, 2009)