Pro-X 28.SIS4335-2 Steel Intake Valve and Spring Kit body-gas-tanks-accessories-breather-caps Constructed of space-age plastics

Constructed of space-age plastics

2005-2018 Yamaha YZF-R6

2016 Suzuki LT-A750 KingQuad AXi Power Steering SE

This will make it less susceptible to side impact failure from rocks or gravel

2020 Honda TRX520FM1 FourTrax Foreman 4x4

Pro-X 28.SIS4335-2 Steel Intake Valve and Spring Kit body-gas-tanks-accessories-breather-caps Constructed of space-age plasticsMaterial: 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