RACING VALVE SPRING KIT Category_Default Category/SLED/Polaris/Matryx BOOST Indexed spark plugs align the

Indexed spark plugs align the open end of the electrode toward the intake port

Longer Turbo life with billet wheel as intake temps are cooler with a more efficient design

Delivers a clean

solid carved from billet design of our clamp completely eliminates this stress area and makes the wire exit of the handlebar the strongest not the weakest point

RACING VALVE SPRING KIT Category_Default Category/SLED/Polaris/Matryx BOOST Indexed spark plugs align theKPMI valve springs are wound from Premium Kobe Super Clean Chrome Silicon Wire. KPMI valve springs are heat treated, stress relieved, and shot peened to insure maximum performance and life. Springs are engineered for each specific application using proprietary advanced spring design simulation, and analysis software. Engineers pay special attention to cam and spring harmonics, stress, mass, and operating rpm.