Supertech Add to Cart Supertech BMW M50/S50/M52/S52/M54 Dual Valve Spring Kit - SPRK-H100DR-BM-ST MSRP: $974.00 Was: Now: $779.37 Supertech BMW Dual Valve Spring Kit
Supertech Add to Cart Supertech Honda/Acura J30/J32 Single Valve Spring Kit - SPRK-H1003S-J32 MSRP: $989.46 Was: Now: $791.74 Supertech Honda/Acura J30/J32 Single Valve Spring Kit
COMP Cams Add to Cart COMP Cams Spring Shims .030 X 1.437 - 4743-16 MSRP: Was: Now: $18.95 Ensure the equal installed height of all of your valve springs with these 1.437" outer diameter, .03…
GSC Power Division Add to Cart GSC P-D Ford Mustang 5.0L Coyote Gen 3 High Pressure Conical Valve Spring & Ti Retainer Kit - 5011 MSRP: $959.00 Was: Now: $815.15 GSC P-D Ford Mustang 5.0L Coyote Gen 3 High Pressure Conical Valve Spring & Ti Retainer Kit
GSC Power Division Add to Cart GSC P-D Mitsubishi 4G63T EVO 1-9 Stage 2 Titanium Retainer for Beehive Spring - Single - RET5040 MSRP: $14.99 Was: Now: $12.74 GSC P-D Mitsubishi 4G63T EVO 1-9 Stage 2 Titanium Retainer for Beehive Spring - Single
Supertech Add to Cart Supertech Subaru WRX/STi 16V Dual Valve Spring Kit - SPRK-TS1015-SU4 MSRP: $683.71 Was: Now: $547.09 Supertech Subaru WRX/STi 16V Dual Valve Spring Kit
Ferrea Add to Cart Ferrea Acura K20 High Lift Drag Racing Dual Spring Kit - KT4035 MSRP: $1,401.28 Was: Now: $1,261.15 Ferrea Acura K20 High Lift Drag Racing Dual Spring Kit
GSC Power Division Add to Cart GSC P-D 2022+ Subaru WRX FA24F Conical Valve Spring and Ti Retainer Kit - 5021 MSRP: $584.00 Was: Now: $496.40 GSC P-D 2022+ Subaru WRX FA24F Conical Valve Spring and Ti Retainer Kit
GSC Power Division Add to Cart GSC P-D Ford Mustang 5.0L Coyote Gen 1/2 Conical Valve Spring and Titanium Retainer Kit - 5010 MSRP: $900.00 Was: Now: $765.00 GSC P-D Ford Mustang 5.0L Coyote Gen 1/2 Conical Valve Spring and Titanium Retainer Kit
Supertech Add to Cart Supertech Audi V8 4.2L 40V Dual Valve Spring Kit - SPRK-AUDI4.2T MSRP: $1,445.53 Was: Now: $1,156.68 Supertech Audi V8 4.2L 40V Dual Valve Spring Kit
Supertech Add to Cart Supertech VW/Audi 1.8T 20V 4cyl Dual Valve Spring Kit - SPRK-AUDI18T-DR MSRP: $733.51 Was: Now: $586.94 Supertech VW/Audi 1.8T 20V 4cyl Dual Valve Spring Kit
Supertech Add to Cart Supertech 17-24 Audi S4 B9 EA839 Beehive Valve Spring Kit - SPRK-A2416-BE1-V6 MSRP: $1,087.19 Was: Now: $869.95 Supertech 17-24 Audi B9 S4 Beehive Valve Spring Kit
Supertech Add to Cart Supertech Titanium Retainer for Audi 5V Intake Spring SPR-A2095 - Set of 12 - RET-AU5VI-T2-12 MSRP: $232.50 Was: Now: $186.00 Supertech Titanium Retainer for Audi 5V Intake Spring SPR-A2095 - Set of 12
Supertech Add to Cart Supertech VW 1.8L Titanium Retainer for 8mm Valve Stem Triple Groove - Set of 8 - RET-026-8 MSRP: $90.18 Was: Now: $72.16 Supertech VW 1.8L Titanium Retainer for 8mm Valve Stem Triple Groove - Set of 8
Ferrea Add to Cart Ferrea 01-06 BMW S54 Dual Spring Kit - KT4045 MSRP: $1,728.00 Was: Now: $1,555.20 Ferrea 01-06 BMW S54 Dual Spring Kit
Skunk2 Racing Add to Cart Skunk2 88-00 Honda Civic D-Series Alpha Series Titanium Retainer Set - 308-05-1600 MSRP: $188.99 Was: Now: $179.99 Skunk2's industry-leading Alpha Titanium Retainers for the Honda D Series engines are designed to si…