Top End

Athena Piston Kit With Gaskets - 96.95 Mm - Yz450F P5F0970213005A Yamaha -- YZ 450 F -- (2021, 2022, 2020)

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 smoother motionDesigned to handle the demands of performance...

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 smoother motionDesigned to handle the demands of performance...

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 one-piece construction and hard chrome stemsSpring sets contain...

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")...

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")...

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")...

Includes rings, clips and pinEasy-to-follow step-by-step installation instructions Honda -- CRF250X -- (2009, 2008, 2006, 2007, 2005, 2004); Honda -- CRF250R -- (2008, 2009, 2004, 2007, 2006, 2005)

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")...

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")...

Includes rings, clips and pinEasy-to-follow step-by-step installation instructions Yamaha -- YZ 250 F -- (2003, 2006, 2001, 2002, 2004, 2007, 2005); Yamaha -- WR 250 F -- (2004, 2007, 2009, 2008, 2002, 2001, 2003, 2006, 2005, 2010, 2011, 2012)

Spring kits contain springs and titanium upper collars; lower collars included as required; spring kits are engineered for use with standard and oversized valvesSpring kits come complete for one motorKeepers are not includedMade in the U.S.A. Honda --...