Top End

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")...

600" max lift kits are designed for maximum performanceFeature interference-wound, double-chrome silicone springs; heat-treated steel base washersInclude steel retainersMade in the U.S.A.

Athena Piston Kit With Gaskets - 96.95 Mm - Yz450F P5F0970197004A Yamaha -- YZ 450 F -- (2018, 2019)

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...

Feuling Oil Pump Corp. Retainer Kit - Titanium - -0.050" - M8 1110

Athena Piston Kit With Gaskets - 77.96 Mm - Mc250F | Fc250 | 250Sxf/Xcf P5F0780078002A KTM -- 250 SX-F -- (2018, 2022, 2017, 2019, 2016, 2021, 2020); KTM -- 250 XC-F -- (2018, 2020, 2022, 2019, 2017, 2016, 2021); Husqvarna -- FC 250 -- (2022, 2019, 2016,...

Athena Piston Kit With Gaskets - 77.97 Mm - Mc250F | Fc250 | 250Sxf/Xcf P5F0780078002B Husqvarna -- FC 250 -- (2016, 2017, 2019, 2022, 2021, 2018, 2020); KTM -- 250 XC-F -- (2017, 2019, 2018, 2020, 2022, 2021, 2016); KTM -- 250 SX-F -- (2018, 2022, 2016,...

Athena Piston Kit With Gaskets - 77.95 Mm - Fe250 | 250Excf P5F0780078001A KTM -- 250 EXC-F -- (2018, 2017, 2019); KTM -- 250 EXC-F Six Days -- (2018, 2019, 2017); Husqvarna -- FE 250 -- (2017, 2019, 2018)

Athena Piston Kit With Gaskets - 77.96 Mm - Fe250 | 250Excf P5F0780078001B KTM -- 250 EXC-F -- (2017, 2019, 2018); KTM -- 250 EXC-F Six Days -- (2018, 2019, 2017); Husqvarna -- FE 250 -- (2017, 2019, 2018)

Kits include KPMI® or equivalent valve spring kit, a full set of Black Diamond™stainless steel standard size valves, H.T. Steel valve keepers and valve stem seals (where applicable) for engine applications listedAll valves are impregnated by a special...

Manufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloyAllow 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")...

Top End Piston Kit - 55.95 Mm - Ktm Vtk23383A KTM -- 150 SX -- (2015, 2014, 2013, 2012, 2011, 2009, 2010); KTM -- 150 XC -- (2010, 2014, 2012, 2013, 2011); KTM -- 144 SX -- (2007, 2008)