ProX 28.SES6334-1 - Prox Valve & Spring Kit For KTM EXC-F250 2014-2016 Exhaust - Black

Features: Kits replace the OEM valves and 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 . Kits contain a set of steel intake or exhaust valves plus a set of specially designed valve springs; can be installed using the OEM retainers, bases and valve seals.