Top End

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...

Manufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloyAllows a tighter fit and longer piston and ring lifeDiamond-machined pistons are held to plus or minus one gram weight and less than one-half-thousandth-inch (.0005")...

Machined from 2618-T6 high-tensile forged aluminumDome/dish features smooth flowing radii; requires no deburring or preparationSpecifically engineered for extreme applications including professional competitionPro Series pistons available for select...

• Reduced valve train noise from start up to shut down • Close tolerances for low leak down rates • Fast pump up and superior high rpm performance • Each Precision Lifter is hand assembled to exacting tolerances and designed for quiet operation and rapid...

Top End Piston Kit - 99.95 Mm - Yamaha Vtktc23104-1 Yamaha -- YFM 660 F Grizzly 4x4 -- (2002, 2003, 2004); Yamaha -- YXR 660F Rhino 4x4 -- (2007, 2004, 2006, 2005)

Nickel silicon carbide (NSC) plated cylinderCNC machined from 6061 aluminumMaximum strength, durability, and power Polaris -- Sportsman 570 EFI 4x4 -- (2015, 2017, 2018, 2016, 2014, 2019); Polaris -- Sportsman X2 570 EPS 4x4 -- (2016, 2017, 2019, 2015,...

Top End Piston Kit - 77.95 Mm - Honda Crf250R Vtktc23443A Honda -- CRF250R -- (2009, 2008)

Top End Piston Kit - 76.77 Mm - Honda Crf250R Vtktc23510B Honda -- CRF250R -- (2011, 2010, 2012, 2013)

Top End Piston Kit - 76.76 Mm - Honda Crf250R Vtktc23510A Honda -- CRF250R -- (2011, 2010, 2013, 2012)

Include springs, upper and lower collars and keysFor valve lift to .650" with 1.860"/178 lbs. installed height, 376 lbs. at max liftMax 6500 rpmMade in the U.S.A. Harley-Davidson -- Wide Glide EFI FXDWGI -- (2016, 2015, 2014, 2013, 2007, 2010, 2012,...

Piston Kit - 87.96 Mm - Gas Gas | Husqvarna | Ktm 24116A KTM -- 350 XC-F -- (2016, 2021, 2020, 2017, 2022, 2018, 2019); KTM -- 350 SX-F -- (2016, 2021, 2020, 2022, 2017, 2018, 2019); KTM -- 350 EXC-F -- (2021, 2020, 2022, 2023); KTM -- 350 XCF-W --...

Spring kit is designed with increased spring rates and high lift compatibility compared to the stock springsCompatible with boosted or turbocharged applicationsCNC-machined titanium retainers and Cr-Si dual springs provide valvetrain control at high rpms...