BC Valve Springs and Retainers for 4G63 Evo/DSM (BC0100) Kelford "The GS 3-port BCS provides

"The GS 3-port BCS provides rapid boost response while maintaining the ability to make acute adjustments via turbo dynamics

lubricate the long bolt with provided grease and start turning the long bolt clockwise with the help of a wrench (14mm) to apply pressure to the retainer cap and compress the valve spring until the keepers are completely visible and can come out

(2) STM Mounting Tabs

(* For low-boost

BC Valve Springs and Retainers for 4G63 Evo/DSM (BC0100) Kelford "The GS 3-port BCS providesBC Brian Crower valve spring and titanium retainer kit for 4G63 Evo 1 9, 1G 2G DSM and GVR4. Includes a set of 16 single springs and 16 titanium retainers. PAC Racing designed for high rpm, wound from the highest grade, super clean, chrome silicone alloy with proprietary processing procedures for consistent pressures. Vehicle Fitment: Mitsubishi 4G63 1992 2006 Evolution I IX 1990 1999 Eclipse GST GSX 1990 1998 Talon TSi 1990 1994 Laser RS 1991 1992