Pro-X 28.SIS1405-2 Steel Intake Valve and Spring Kit suspension-hole-shot-buttons 2001-2002 Ski-Doo Summit 800 Highmark

2001-2002 Ski-Doo Summit 800 Highmark X

2013-2016 Polaris 800 SwitchBack Assault 144

ISO-HEET prevents rust and corrosion by getting the water out

1980-1982 Honda XL80S

Pro-X 28.SIS1405-2 Steel Intake Valve and Spring Kit suspension-hole-shot-buttons 2001-2002 Ski-Doo Summit 800 HighmarkMaterial: Steel Replaces the OEM valves & valve springs. Steel, nitrided valves for increased durability and less wear under extreme conditions. Stronger valve springs deal with the extra weight of the steel valves. Springs are made from premium chrome vanadium steel for higher performance and durability at high rpm. Kit contains a set of steel intake or exhaust valves plus a set of specially designed valve springs; can be installed using the OEM