Ventilfedern

GSC Power Division

GSC P-D EJ257 Beehive Valve Springs w/ Titanium Retainer Valvetrain Kit (Use factory spring seats) 5043

RCM

RCM V3/4 Uprated Valve Springs

Manley

Manley Ventilfedern

Supertech

Supertech BMW S65/S85 Beehive Valve Spring - Set of 40 (Use w/Factory Retainer & Base)

Supertech

Supertech Cam Follower Shim 8mm Dia 2.65mm Thick

GSC Power Division

GSC P-D Nissan VR30DDTT HP Conical Valve Spring Ti Retainer & Seat Kit (10500RPM/55PSI Max) 5084

Supertech

Supertech Nissan SKYLINE RB25 DOHC 24V (w/Solid Lifters) Dual Valve Spring Kit SPRK-TS1015-RB25

Supertech

Supertech Mazda Miata 1.6L Dual Valve Spring Kit (70lbs at 34.2mm Installed Height) SPRK-MM16D-2

Supertech

Supertech Toyota 4AGE 16V Dual Valve Spring - Set of 16 SPR-TC25D-16

GSC Power Division

GSC P-D Nissan VR30DDTT HP Conical Valve Spring Ti Retainer & Seat Kit (9500RPM/40PSI Max) 5083

GSC Power Division

GSC P-D Valve Seat Set OEM Replacement EJ205/EJ207/EJ257 1005

GSC Power Division

GSC P-D 4G63T Valve Seat OEM Replacement (Set of 16) 1004

Supertech

Supertech Titanium Retainer for Audi 5V Intake Spring SPR-A2095 - Set of 12 RET-AU5VI-T2-12

Supertech

Supertech Ford Coyote 5.0L 122lb/40mm Seat Pressure Beehive Valve Spring Kit SPRK-FCO-BE2

Supertech

Supertech Ford Coyote 5.0L Beehive Valve Spring Kit SPRK-FCO-BE

GSC Power Division

GSC P-D Ford 5.2L Voodoo/Predator Conical Spring & Ti Retainer Kit 5013

Supertech

Supertech Nissan VR30DDTT Conical Valve Spring Kit SPRK-FM46-VR30-BE2

Supertech

Supertech BMW S63 V8 Conical Spring Kit - Rate 83lbs (Ex) 80lbs (In) SPRK-BMS63B

Supertech

Supertech Titanium Retainer for H1000 Series Springs RET-K20A2-T2

Supertech

Supertech BMW B58 Beehive Valve Spring Kit (Set Pressure 84 at 37mm) SPRK-MCB58-2

Supertech

Supertech BMW B58 Beehive Valve Spring Kit SPRK-MCB58

Supertech

Supertech Toyota Supra (A90)/BMW B58B Conical Spring Kit SPRK-B58B-2

GSC Power Division

GSC P-D Ford Mustang 5.0L Coyote Gen 3 High Pressure Conical Valve Spring & Ti Retainer Kit 5011

Supertech

Supertech BMW M50/S50/M52/S52/M54 Dual Valve Spring Kit SPRK-H100DR-BM-ST

Supertech

Supertech Honda/Acura J30/J32 Single Valve Spring Kit SPRK-H1003S-J32

Supertech

Supertech Audi V8 4.2L 40V Dual Valve Spring Kit SPRK-AUDI4.2T

Supertech

Supertech VW/Audi 1.8T 20V 4cyl Dual Valve Spring Kit SPRK-AUDI18T-DR

GSC Power Division

GSC P-D Ford Mustang 5.0L Coyote Gen 1/2 Conical Valve Spring and Titanium Retainer Kit 5010

Supertech

Supertech Subaru WRX/STi 16V Dual Valve Spring Kit SPRK-TS1015-SU4

Subaru

Ventilfeder 2011+ EJ257 STI - 13217AA440

Supertech

Supertech Titanium Retainer for SPR-H1000 Series - Single (Drop Ship Only) RET-AU5VE-T1

Supertech

Supertech Mitsubishi 4G63 Dual Valve Spring Kit SPRK-M1007D-3

GSC Power Division

GSC P-D 2022+ Subaru WRX FA24F High Pressure Conical Valve Spring and Ti Retainer Kit 5024

GSC Power Division

GSC P-D Porsche 991 Turbo Conical Spring Set 5094

GSC Power Division

GSC P-D Mitsubishi 4G63T High Pressure Conical Valve Spring and Ti Retainer Kit 5098

GSC Power Division

GSC P-D Mitsubishi 4G63T Extreme Pressure Conical Valve Spring and Ti Retainer Kit 5097

GSC Power Division

GSC P-D Toyota G16E Conical Valve Spring and Ti Retainer Kit 5017

GSC Power Division

GSC P-D Nissan RB26DETT High Pressure Shimless Conical Valve Spring & Ti Retainer Kit (Max PSI 60) 5026

GSC Power Division

GSC P-D Ford Mustang 5.0L Coyote Gen 3 Conical Valve Spring and Ti Retainer Kit 5012

Supertech

Supertech Valve Spring Shim 1.140in OD .570in ID .030in Thick (Drop Ship Only) SS-3043

GSC Power Division

GSC P-D Nissan RB26DETT Shimless Conical Valve Spring & Ti Retainer Kit ( Max Boost PSI 50) 5085

Supertech

Supertech Honda F20/K20 Dual Valve Spring Kit SPRK-H1021D-ST

Supertech

Supertech Titanium Retainer for Spring 6.6mm Stem 7 Degree - Set of 16 RET-TS66-T1-16

Supertech

Supertech Mitsubishi 4G63 Dual Valve Spring Kit SPRK-M1007D

Supertech

Supertech 12.15mm Cam Follower Shim 2.7mm Thick RB26-SHIM-2.70

Manley Performance

Manley Subaru WRX/STI 16pc Valve Springs (1.050/.755) (for use with 23180-16 Retainers) 22180-16

Supertech

Supertech Spring Seat Locator for SPR-TS1015 Subaru SOHC EJ25 9.5mm - Set of 16 SEAT-TS-SUB-5-16

GSC Power Division

GSC P-D Nissan RB26DETT/RB26 Cylindrical Valve Spring Kit 5775

GSC Power Division

GSC P-D Toyota 2JZ Dual Valve Spring and Ti Retainer Kit 5266

GSC Power Division

GSC Subaru FA20 WRX/BRZ/FRS Dual Cylindrical Valve Spring Kit 5256