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

GSC Power Division

GSC P-D BMW S58 Beehive Valve Spring & Ti Retainer Kit (Max Boost 70PSI) 5023

Manley

Manley Ventilfedern

Supertech

Supertech Cam Follower Shim 8mm Dia 2.75mm Thick

GSC Power Division

GSC P-D Round Wire Conical Valve Spring - Set of 8

Supertech

Supertech Cam Follower Shim 8mm Dia 2.65mm Thick

Supertech

Supertech Subaru Impreza EJ25 Dual Valve Spring Kit

Supertech

Supertech BMW S42/M42/M50/S50/M52/M54 Dual Valve Spring Kit

Supertech

Supertech Mini Cooper N14B16 / N18B16 Beehive Valve Spring (Fits OEM Retainer) - Set of 16

Supertech

Supertech Dual Valve Spring - 29/21.80mm-21-15.5mm - 22mm CB - 18.3mm Max Net Lift - Set of 16

Supertech

Supertech Dual Valve Spring - 30/21.80mm-21.8/16.2mm - 22mm CB - Rate 13.2lbs/mm - Set of 16

Supertech

Supertech Honda K20/K24 Dual Valve Spring - Set of 16

Supertech

Supertech Honda B16A/B17A/B18C Dual Valve Spring - Set of 16

Supertech

Supertech Honda H22A1/H22A4 Dual Valve Spring - Set of 16

Supertech

Supertech Spring Seat Locator for SPR-TS1015 Subaru WRX EJ20-25 1mm Thick - Set of 16

Supertech

Supertech Honda RSX / S2000 Spring Seat Locator for Dual Spring H1020 Series - Set of 16

Supertech

Supertech Dual Spring Seat Locator - Set of 16

Supertech

Supertech Titanium Retainer for H1000 Series Springs - Set of 16

Supertech

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

Supertech

Supertech Nissan RB26 Factory Shim Replacement 12.15mm Diameter 2.60mm Thickness

Supertech

Supertech Cam Follower Shim 8mm Dia 2.55mm Thick

Supertech

Supertech Cam Follower Shim 8mm Dia 2.50mm Thick

Supertech

Supertech Cam Follower Shim 8mm Dia 2.15mm Thick

Supertech

Supertech Cam Follower Shim 8mm Dia 2.10mm Thick

Supertech

Supertech VW VR6 24V R32 Dual Valve Spring Kit

Supertech

Supertech Honda F20/K20A2 Dual Valve Spring Kit

Supertech

Supertech Honda F20/K20A2 Dual Valve Spring Kit

Supertech

Supertech Honda B16/B18C Dual Valve Spring Kit (w/Titanium Retainers)

Supertech

Supertech Honda D16Z/D16Y8/D17 Single Valve Spring Kit

Supertech

Supertech Honda B16/B18C Dual Valve Spring Kit (w/Titanium Retainers)

Supertech

Supertech BMW N54 Conical Spring Kit - Rate 7.25lbs/mm

Supertech

Supertech BMW N54 24V 3.0L BMW N54 Conical Spring Kit (Use Factory Valve Stem Seal)

Supertech

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

Supertech

Supertech VW 2.5L 5cyl 20V Single Valve Spring Kit

Supertech

Supertech Mazda Miata 1.8 1.8L Dual Valve Spring Kit

Supertech

Supertech Honda B16/B18C Loss Motion Beehive Valve Spring Kit

GSC Power Division

GSC P-D Subaru EJ Dual Conical Titanium Retainer - Set of 16

GSC Power Division

GSC P-D Subaru EJ Dual Conical Titanium Retainer - Single

GSC Power Division

GSC P-D Subaru EJ Conical Titanium Retainer (Set of 16)

GSC Power Division

GSC P-D Subaru EZ36 Valve Spring Seat and Titanium Retainer Kit

GSC Power Division

GSC P-D 3SGTE Spring and Titanium Retainer Kit for Shimless and Shimover Bucket

GSC Power Division

GSC P-D Toyota 2JZGTE/2JZGE/VVTI Variants Valve Spring Kit (set of 24)

GSC Power Division

GSC P-D Porsche GT3/GT3 (991) Single Conical Valve Spring Ti Retainer Steel Spring Seat Kit

GSC Power Division

GSC P-D Nissan TB48 Ti Retainer Steel Spring Seat HP Conical Valve Spring Kit

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 Nissan TB48 Ti Retainer Steel Spring Seat Conical Valve Spring Kit

GSC Power Division

GSC P-D Subaru EJ Series Dual Conical Valve Spring Kit

GSC Power Division

GSC P-D Subaru EJ Single Conical Valve Spring Titanium Retainer & Spring Seat Kit

GSC Power Division

GSC P-D Nissan VR38DETT Conical Valve Spring Kit w/ TVS1903 Conical Spring