Supertech Add to Cart Supertech BMW S42/M42/M50/S50/M52/M54 Dual Valve Spring Kit - SPRK-H1000D-BM MSRP: $1,102.84 Was: Now: $882.47 Supertech BMW S42/M42/M50/S50/M52/M54 Dual Valve Spring Kit
Supertech Add to Cart Supertech Honda H22 Dual Valve Spring Kit - SPRK-H1000D MSRP: $597.80 Was: Now: $478.35 Supertech Honda H22 Dual Valve Spring Kit
Supertech Add to Cart Supertech BMW N54 Conical Spring Kit - Rate 7.25lbs/mm - SPRK-FE20N54-BE-2 MSRP: $1,136.21 Was: Now: $909.17 Supertech BMW N54 Conical Spring Kit - Rate 7.25lbs/mm
Supertech Add to Cart Supertech BMW N54 24V 3.0L BMW N54 Conical Spring Kit (Use Factory Valve Stem Seal) - SPRK-FE20N54-BE MSRP: $1,136.21 Was: Now: $909.17 Supertech BMW N54 24V 3.0L BMW N54 Conical Spring Kit (Use Factory Valve Stem Seal)
Supertech Add to Cart Supertech Ford/Mazda DURATEC 2.0L/2.3L Beehive Valve Spring Kit (Use OEM Retainer/OEM Seat) - SPRK-FE20BE MSRP: $412.29 Was: Now: $329.90 Supertech Ford/Mazda DURATEC 2.0L/2.3L Beehive Valve Spring Kit (Use OEM Retainer/OEM Seat)
Supertech Add to Cart Supertech Seedoo 4TEC Dual Valve Spring Kit - SPRK-EC3025D-SE MSRP: $467.24 Was: Now: $373.88 Supertech Seedoo 4TEC Dual Valve Spring Kit
Supertech Add to Cart Supertech VW/Audi 2.7T 30V 6cyl Single & Dual Valve Spring Kit - SPRK-AUDI2.7T MSRP: $1,100.24 Was: Now: $880.38 Supertech VW/Audi 2.7T 30V 6cyl Single & Dual Valve Spring Kit
Supertech Add to Cart Supertech VW/Audi 1.8T 20V 4cyl Dual Valve Spring Kit - SPRK-AUDI18T MSRP: $733.51 Was: Now: $586.94 Supertech VW/Audi 1.8T 20V 4cyl Dual Valve Spring Kit
Supertech Add to Cart Supertech Audi V6 (24V) Single Valve Spring Kit 73lb - 37.4 Ex 85lb - 36 / 24.9 CB / 12.5 Lift Ex 11 - SPRK-A2416N-V6 MSRP: $855.42 Was: Now: $684.49 Supertech Audi V6 (24V) Single Valve Spring Kit 73lb - 37.4 Ex 85lb - 36 / 24.9 CB / 12.5 Lift Ex 11
Supertech Add to Cart Supertech VW/Audi 2.0L FSI EA113 Single Valve Spring Kit - SPRK-A2416-N2 MSRP: $570.29 Was: Now: $456.33 Supertech VW/Audi 2.0L FSI EA113 Single Valve Spring Kit
Supertech Add to Cart Supertech Audi 2.5T FSI/TFSI/EA113/EA888 Single Valve Spring Kit - SPRK-A2416-BE2 MSRP: $724.83 Was: Now: $579.99 Supertech Audi 2.5T FSI/TFSI/EA113/EA888 Single Valve Spring Kit
Supertech Add to Cart Supertech VW 2.5L 5cyl 20V Single Valve Spring Kit - SPRK-A2416-5 MSRP: $687.12 Was: Now: $549.81 Supertech VW 2.5L 5cyl 20V Single Valve Spring Kit
Supertech Add to Cart Supertech BMW S54 24V 3.2L Dual Valve Spring Kit - SPRK-2521-2BM-T1 MSRP: $1,102.84 Was: Now: $882.47 Supertech BMW S54 24V 3.2L Dual Valve Spring Kit
Supertech Add to Cart Supertech Nissan SKYLINE RB25 DOHC 24V (w/Hydraulic Lifters) Single Valve Spring Kit - SPRK-2081-RB25 MSRP: $907.67 Was: Now: $726.30 Supertech Nissan SKYLINE RB25 DOHC 24V (w/Hydraulic Lifters) Single Valve Spring Kit
Supertech Add to Cart Supertech Mazda Miata 1.8 1.8L Dual Valve Spring Kit - SPRK-1012-M18D MSRP: $752.89 Was: Now: $602.45 Supertech Mazda Miata 1.8 1.8L Dual Valve Spring Kit
Supertech Add to Cart Supertech VW VR6 Dual Valve Spring - Set of 12 - SPR-V2093-4-12 MSRP: $217.16 Was: Now: $173.76 Supertech VW VR6 Dual Valve Spring - Set of 12