Ferrea Dual Valve Spring Kit for 4G63 Evo 4-9 (KT4013) Zeitronix Aluminum components on the Generation

Aluminum components on the Generation 8 series coilovers are designed for optimal efficiency by maximizing weight savings without compromising integrity

and helps to stabilize your rear bumper

replacing every core component in the OEM system

These pistons feature skirt diameters that correspond to the OEM Grade 1

With our J-Pipe

Ferrea Dual Valve Spring Kit for 4G63 Evo 4-9 (KT4013) Zeitronix Aluminum components on the GenerationFerrea dual valve spring kit for the Evo 4 5 6 7 8 9 includes a full set of 16 dual springs, titanium retainers, seat locators and valve locks. Vehicle Fitment: 1996 2006 Evolution IV V VI VII VIII IX Includes: (16) Dual Springs (S10084) (16) Titanium Retainers (E11052) (16) Seat Locators (SL1041) (16) Valve Locks (32 pieces) (K10035) More Info: Ferrea valve springs are heat treated and stress relieved, which dramatically increases the spring's life.