Supertech Valvetrain kit


$478.08 $597.60

The Supertech Dual Valve Spring Kits include 16 dual springs, 16 titanium retainers and valve seats. Designed and manufactured to reduce valvetrain harmonics, increase durability, and provide an increase in performance for your 4B11 engine. All Supertech dual valve springs are manufactured using superclean chrome silicon vanadium alloy and then heat treated, stress relieved and shot peened to help improve the fatigue life of the spring. Mitsubishi Evolution X 75lb Springs.

Each Kit Includes:
  • (16) Dual Valve Springs
  • (16) Retainers
  • (16) Valve Seat Locators


  • 2008 - 2015 4b11 Mitsubishi EvolutionX
  • Part # SPRK-M1015/EX3