Top End

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...

Machined from 2618-T6 high tensile forged aluminumDome/dish requires no deburring or preparationPins, pin fitment, lock and rings includedMade in the U.S.A. Honda -- CBR500R -- (2014, 2015, 2017,...

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...

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...

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...

Full set of Black Diamond™ stainless steel standard size valves for engine applications listedAll valves are impregnated by a special process to a depth of .002” with a surface buildup of ...

Athena Piston Kit With Gaskets - 77.96 Mm - Kx250F P5F0780071004A Kawasaki -- KX 250 F -- (2021); Kawasaki -- KX 250 -- (2022, 2023, 2021)

Made from premium stress-relieved conical ovate wireFeature extremely high-level of fatigue lifeUse a much smaller and lighter weight retainer to reduce valve weight and create quicker rev and...

Made from premium stress-relieved conical ovate wireFeature extremely high-level of fatigue lifeUse a much smaller and lighter weight retainer to reduce valve weight and create quicker rev and...

Top End Piston Kit - 66.35 Mm - Husaberg | Husqvarna | Ktm Vtk23630B-1 KTM -- 250 XC -- (2015, 2012, 2013, 2008, 2007, 2009, 2010, 2016, 2011, 2014); KTM -- 250 SX -- (2008, 2012, 2007, 2011, 2010,...

Black Diamond? valves feature one-piece stainless steel construction with stellite tips and special impregnation to improve wear properties and reduce friction; White Diamond? valves feature...

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...