Ventilfedern

GSC Power Division

GSC P-D EJ257 Beehive Valve Springs w/ Titanium Retainer Valvetrain Kit (Use factory spring seats)

RCM

RCM V3/4 Uprated Valve Springs

Manley

Manley Ventilfedern

GSC Power Division

GSC P-D Nissan VR30DDTT HP Conical Valve Spring Ti Retainer & Seat Kit (9500RPM/40PSI Max)

GSC Power Division

GSC P-D Valve Seat Set OEM Replacement EJ205/EJ207/EJ257

GSC Power Division

GSC P-D 4G63T Valve Seat OEM Replacement (Set of 16)

Supertech

Supertech Titanium Retainer for Audi 5V Intake Spring SPR-A2095 - Set of 12

Supertech

Supertech Titanium Retainer for SPR-H1000 Series - Set of 8

Supertech

Supertech Ford Coyote 5.0L 122lb/40mm Seat Pressure Beehive Valve Spring Kit

Supertech

Supertech Ford Coyote 5.0L Beehive Valve Spring Kit

GSC Power Division

GSC P-D Ford 5.2L Voodoo/Predator Conical Spring & Ti Retainer Kit

Supertech

Supertech Nissan VR30DDTT Conical Valve Spring Kit

Supertech

Supertech BMW S63 V8 Conical Spring Kit - Rate 83lbs (Ex) 80lbs (In)

Supertech

Supertech Titanium Retainer for H1000 Series Springs

Supertech

Supertech BMW B58 Beehive Valve Spring Kit (Set Pressure 84 at 37mm)

Supertech

Supertech BMW B58 Beehive Valve Spring Kit

Supertech

Supertech Toyota Supra (A90)/BMW B58B Conical Spring Kit

GSC Power Division

GSC P-D Ford Mustang 5.0L Coyote Gen 3 High Pressure Conical Valve Spring & Ti Retainer Kit

Supertech

Supertech BMW M50/S50/M52/S52/M54 Dual Valve Spring Kit

Supertech

Supertech Honda/Acura J30/J32 Single Valve Spring Kit

Supertech

Supertech Audi V8 4.2L 40V Dual Valve Spring Kit

Supertech

Supertech VW/Audi 1.8T 20V 4cyl Dual Valve Spring Kit

GSC Power Division

GSC P-D Ford Mustang 5.0L Coyote Gen 1/2 Conical Valve Spring and Titanium Retainer Kit

Supertech

Supertech Subaru WRX/STi 16V Dual Valve Spring Kit

Subaru

Ventilfeder 2011+ EJ257 STI - 13217AA440

Supertech

Supertech Titanium Retainer for SPR-H1000 Series - Single (Drop Ship Only)

Supertech

Supertech Mitsubishi 4G63 Dual Valve Spring Kit

GSC Power Division

GSC P-D 2022+ Subaru WRX FA24F High Pressure Conical Valve Spring and Ti Retainer Kit

GSC Power Division

GSC P-D 2022+ Subaru WRX FA24F Conical Valve Spring and Ti Retainer Kit

GSC Power Division

GSC P-D Porsche 991 Turbo Conical Spring Set

GSC Power Division

GSC P-D Mitsubishi 4G63T High Pressure Conical Valve Spring and Ti Retainer Kit

GSC Power Division

GSC P-D Mitsubishi 4G63T Extreme Pressure Conical Valve Spring and Ti Retainer Kit

GSC Power Division

GSC P-D Toyota G16E Conical Valve Spring and Ti Retainer Kit

GSC Power Division

GSC P-D Nissan RB26DETT High Pressure Shimless Conical Valve Spring & Ti Retainer Kit (Max PSI 60)

GSC Power Division

GSC P-D Ford Mustang 5.0L Coyote Gen 3 Conical Valve Spring and Ti Retainer Kit

Supertech

Supertech Valve Spring Shim 1.140in OD .570in ID .030in Thick (Drop Ship Only)

GSC Power Division

GSC P-D Nissan RB26DETT Shimless Conical Valve Spring & Ti Retainer Kit ( Max Boost PSI 50)

Supertech

Supertech Honda F20/K20 Dual Valve Spring Kit

Supertech

Supertech Titanium Retainer for Spring 6.6mm Stem 7 Degree - Set of 16

Supertech

Supertech Mitsubishi 4G63 Dual Valve Spring Kit

Supertech

Supertech 12.15mm Cam Follower Shim 2.7mm Thick

Manley Performance

Manley Subaru WRX/STI 16pc Valve Springs (1.050/.755) (for use with 23180-16 Retainers)

Manley Performance

Manley Chrysler Hemi 6.4L NexTek Series High Performance Valve Springs .650 Max Lift

Manley Performance

Manley Toyota Supra (2JZGT 2JZGTE 6 cyl) 24pc Valve Springs

Supertech

Supertech Spring Seat Locator for SPR-TS1015 Subaru SOHC EJ25 9.5mm - Set of 16

GSC Power Division

GSC P-D Nissan RB26DETT/RB26 Cylindrical Valve Spring Kit

GSC Power Division

GSC P-D Toyota 2JZ Dual Valve Spring and Ti Retainer Kit

GSC Power Division

GSC Subaru FA20 WRX/BRZ/FRS Dual Cylindrical Valve Spring Kit

GSC Power Division

GSC P-D 2017+ Audi RS3 DAZA Beehive Valve Spring and Ti Retainer Kit (60PSI Max Boost)

GSC Power Division

GSC P-D Toyota Supra/BMW Z4 B58 Beehive Valve Spring and Ti Retainer Kit