Valve Springs

Professional Valve Springs - Set of 16 by Manley Performance Manley valve springs are wound from super clean alloy. Each design minimizes stress to ensure long service life with high lift camshafts. Features Double w/ Damper Chrome Silicon Benefits Suited for oval track and...

NexTek Drag Race/Oval Track & Endurance Valve Springs - Set of 16 by Manley Performance These Manley NexTek valve springs are better-designed valve springs using state-of-the-art machinery for purpose-built racing engines. They're manufactured from super-clean, high-tensile chrome silicon steel and are shot-peened to MIL...

NexTek Drag Race Valve Springs - Set of 16 by Manley Performance These Manley NexTek valve springs are better-designed valve springs using state-of-the-art machinery for purpose-built racing engines. They're manufactured from super-clean, high-tensile chrome silicon steel and are shot-peened to MIL specs for maximum...

1.600in to 1.650in Diameter 1.065/1.625 OD 0.770/1.175 ID Dual w/ Damper Valve Spring Set by Ferrea Harmonics or high frequency fatigue is present in all racing engines and will usually destroy the valvetrain if not controlled. Properly designed valve springs will control the dominant...

DSM Valve Springs and Retainers We’ve spent countless hours working on performance upgrades and testing them out, and we can tell you there is no substitute for quality. That goes double for the springs and retainers in your engine, and Manley Performance Parts makes...

Sport Compact Valve Springs by Manley Manley Performance valve springs are specifically designed to withstand the rigors of today's aftermarket Sport Compact camshafts and properly control the valve train in these high revving Sport Compact engine applications. This means utilizing only the best, super...

HKS Exhaust Step2 Camshaft 278 Deg STEP2 Camshaft, For use w/ HKS Valve Springs (22001-AM001) & EVO VII Retainers, Valve Timing Controller Required Duration Features 278 Deg Position: Exhaust Valve Lift: 11mm Valve Timing: 110 Deg Benefits Applications 2001-2006 Mitsubishi EVO CT9A What's in...

These HKS Valve Springs are specifically designed for the 4G63 with aftermarket camshafts! They will work great with all camshafts. They are also designed to allow higher revving than the stock valve springs. And as always, with HKS, you KNOW you are getting quality!...

Beehive Spring Set for 4G63 GSC Power-Division Beehive springs feature some of the most impressive manufacturing techniques in the industry. Our beehive spring uses an ovate wire which utilizes advanced material heat treatment methods for superior load loss capabilities. What this means to you...

4G63 Beehive Valve Springs with Titanium Retainers by GSC Power-Division GSC Power-Division Beehive springs feature some of the most impressive manufacturing techniques in the industry. Our beehive spring uses an ovate wire which utilizes advanced material heat treatment methods for superior load loss capabilities....

Crower Springs and Retainers are among some of the best for the 4G63 engines. The retainers and springs fit great every time. The retainers are titanium for super strength and lightweight for high revving applications! This spring and retainer kit works great when your...

Single Valve Spring Kit (no Retainers) Designed for high rpm, BC valve springs by PAC Racing are wound from only the highest grade, super clean, chrome silicone alloy and feature proprietary processing procedures for consistent pressures.  Features Spring PressureSeat: 1.550" @ 84 lbsOpen: 1.000"...

Mitsubishi 4G63T Dual Valve Springs by Brian Crower Designed for high rpm, Brian Crower valve springs are wound from only the highest grade, super clean, chrome silicone alloy and feature proprietary processing procedures (chamfer, debur, etc...) for consistent pressures over long term, high rpm...

Mitsubishi EVO X Valve Springs - Set of 16 by Manley Performance Manley valve springs are wound from super clean alloy. Each design minimizes stress to ensure long service life with high lift camshafts. Features Wound from super clean alloy Benefits Designed to handle...

Brian Crower Valve Springs / Retainers Designed for high rpm, BC valve springs are wound from only the highest grade, super clean, chrome silicone alloy and feature proprietary processing procedures for consistent pressures. BC retainers and spring seats are CNC machined from 6AL4V titanium...

Set of Valve Springs by Brian Crower BC high performance camshafts are ground on state-of-the-art CNC cam grinders to insure accuracy and tolerances to within .02mm. Every BC camshaft profile has been prototyped and dyno tested for proven horsepower results prior to being placed...