RACING VALVE SPRING KIT 15-6191 Comes standard with a pad

Comes standard with a pad and a plain steel insert

E-Ton 50cc Thunder 90

Features 6" of 60 degree tungsten carbide

1994 Honda XR650L

RACING VALVE SPRING KIT 15-6191 Comes standard with a padKPMI 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. 80 Lbs of Seat Pressure 205 Lbs @ 0. 435"