DescriptionBRP ® • CAN AM® DS 450™ 2008-2015 Husqvarna® FS 450 2017-2018 Husqvarna® FX 450 2017 Husqvarna® FC 450 2014-2018 KTM® All RFS ATV Engines 450cc-525cc 2008-2009 KTM® All RFS Dirt Bike Engines 400cc-560cc 2000-2009 KTM® 450 2007-2011 (For RF4 Engines) KTM® 450 XC-F 2013-2017 KTM® 450 SX-F 2013-2018 KPMI® Red 100% Viton valve stem seals are designed to have optimum fitment, allow maximum lift, and to give maximum life. KPMI® Red valve stem seals are resistant to high temperatures, petroleum products and the corrosive gasses that are the by-products of combustion. These seals retain their ability to seal in situations where other materials could harden and allow oil to enter the combustion chamber causing detonation, carbon build up and a loss of power. The Red Ones are truly the racers choice.TypeIntake / ExhaustMaterialRed Viton®ReferenceSee Figure 1QuantityPkg. 1Stem Diameter6.0mmOverall Length0.315″Seal O.D.0.520″A0.435”±0.002”B0.395″C0.120″D0.210″OEM REF. P/N59036027000NoteUse the diagram and specifications to ensure your valve guide shares the same dimensions for a proper fit