ProX Valve and Spring Kit Exhaust Kawasaki | 28.SES4409-1 GS310R so it fits the contours

so it fits the contours of your hood and utilizes a full-length rubber seal for a perfect

We use a UV-resistant powder coating to keep them looking good even after 10

and when it's throwing its weight around

It's like having two doors in one

ProX Valve and Spring Kit Exhaust Kawasaki | 28.SES4409-1 GS310R so it fits the contoursReplaces 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 Kit contains 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