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GSC P-D Subaru EJ Series Dual Conical Valve Spring Kit
Regular price $640.99 USDRegular price$753.24 USD-$112.25 USD Sale price $640.99 USD -
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GSC P-D Subaru EJ Single Conical Valve Spring Titanium Retainer & Spring Seat Kit
Regular price $517.99 USDRegular price$609.24 USD-$91.25 USD Sale price $517.99 USD -
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GSC P-D Toyota 3SGTE High Pressure Conical Valve Spring Kit w/Ti Retainer for Shimless/Shim-Over
Regular price $470.99 USDRegular price$553.85 USD-$82.86 USD Sale price $470.99 USD -
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GSC P-D Nissan VR38DETT High Pressure Conical Valve Spring Kit w/ Titanium Retainer
Regular price $843.99 USDRegular price$992.75 USD-$148.76 USD Sale price $843.99 USD -
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GSC P-D Nissan VR38DETT Conical Valve Spring Kit w/ TVS1903 Conical Spring
Regular price $843.99 USDRegular price$992.75 USD-$148.76 USD Sale price $843.99 USD -
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GSC P-D Toyota 3SGTE Conical Valve Spring and Ti Retainer Kit (Use w/ Shim Over/Shimless Bucket)
Regular price $470.99 USDRegular price$553.85 USD-$82.86 USD Sale price $470.99 USD -
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GSC P-D Toyota 2JZ-GTE Single Conical Valve Spring and Ti Retainer Kit
Regular price $706.99 USDRegular price$830.78 USD-$123.79 USD Sale price $706.99 USD -
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GSC P-D Subaru EZ36 Single Conical Valve Spring, Titanium Retainer Kit and Spring Seat Kit
Regular price $741.99 USDRegular price$872.32 USD-$130.33 USD Sale price $741.99 USD -
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GSC P-D Toyota 2JZ Conical Valve Spring and Ti Retainer Kit
Regular price $706.99 USDRegular price$830.78 USD-$123.79 USD Sale price $706.99 USD -
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GSC P-D Mitsubishi 4B11T High Pressure Single Conical Valve Spring and Ti Retainer Kit
Regular price $494.99 USDRegular price$581.55 USD-$86.56 USD Sale price $494.99 USD -
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GSC P-D K-series Vtec K20/K24 Beehive Valve Spring and Titanium Retainer Kit Higher REV
Regular price $399.99 USDRegular price$470.49 USD-$70.50 USD Sale price $399.99 USD -
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GSC P-D Toyota 2JZ Beehive Valve Springs & Ti Retainer Kit (Check Fitment of Spring Base)
Regular price $597.99 USDRegular price$703.02 USD-$105.03 USD Sale price $597.99 USD -
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GSC P-D Nissan RB26DETT Extreme Shimless Conical Valve Spring & Ti Retainer Kit (Max Boost PSI 90)
Regular price $994.99 USDRegular price$1,170.35 USD-$175.36 USD Sale price $994.99 USD -
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GSC P-D Nissan RB26DETT High Pressure Shimless Conical Valve Spring & Ti Retainer Kit (Max PSI 60)
Regular price $824.99 USDRegular price$970.35 USD-$145.36 USD Sale price $824.99 USD -
GSC P-D Audi R8 V10 / Lamborghini Huracan V10 5.2L Valve Spring & Ti Retainer Kit (w/Seats & Seals)
Regular price $1,800.99 USDRegular price$1,800.00 USDSale price $1,800.99 USD -
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GSC P-D BMW S58 Beehive Valve Spring & Ti Retainer Kit (Max Boost 70PSI)
Regular price $595.99 USDRegular price$700.00 USD-$104.01 USD Sale price $595.99 USD -
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GSC P-D Nissan VQ35 Extreme Conical Valve Spring Titanium Retainer and Spring Seat Kit
Regular price $845.99 USDRegular price$995.00 USD-$149.01 USD Sale price $845.99 USD -
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GSC P-D Nissan VQ35 High Pressure Conical Valve Spring Titanium Retainer and Spring Seat Kit
Regular price $778.99 USDRegular price$916.00 USD-$137.01 USD Sale price $778.99 USD -
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GSC P-D Nissan VQ35 Conical Valve Spring and Titanium Retainer Kit
Regular price $778.99 USDRegular price$916.00 USD-$137.01 USD Sale price $778.99 USD -
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GSC P-D Ford Mustang 5.0L Coyote Gen 3 Conical Valve Spring and Ti Retainer Kit
Regular price $782.99 USDRegular price$920.00 USD-$137.01 USD Sale price $782.99 USD -
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GSC P-D Ford Mustang 5.0L Coyote Gen 1/2 High Pressure Conical Valve Spring & Ti Retainer Kit
Regular price $815.99 USDRegular price$959.00 USD-$143.01 USD Sale price $815.99 USD -
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GSC P-D Ford Mustang 5.0L Coyote Gen 1/2 Conical Valve Spring and Titanium Retainer Kit
Regular price $765.99 USDRegular price$900.00 USD-$134.01 USD Sale price $765.99 USD -
GSC P-D BRZ/FRS FA20 Valve Spring Seat (For TVS1850 - Part of Kit GSC P-D5756) - SINGLE
Regular price $3.99 USDRegular price$3.74 USDSale price $3.99 USD -
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GSC P-D Subaru EJ Series CroMo Spring Seat (For 5074 Spring Kit) - Single
Regular price $5.99 USDRegular price$6.34 USD-$0.35 USD Sale price $5.99 USD -
GSC P-D 13-15 Scion FR-S / BRZ FA20 CroMo Beehive Spring Seat (Single)
Regular price $3.99 USDRegular price$3.74 USDSale price $3.99 USD -
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GSC P-D Mitsubishi 4G63 Zero-Tick Lifter QTY 1
Regular price $12.99 USDRegular price$14.43 USD-$1.44 USD Sale price $12.99 USD -
GSC P-D 4G63T .035in over OEM Chromoly CNC Spring Seat (SINGLE)
Regular price $3.99 USDRegular price$3.74 USDSale price $3.99 USD -
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GSC P-D B-series Vtec B16A/B17A/B18C Ti Washer and Bolt Kit(for BSeries with aftermarket Cam Gears)
Regular price $20.99 USDRegular price$24.20 USD-$3.21 USD Sale price $20.99 USD -
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GSC P-D Porsche GT3 Cup 996/997 Intake/Exhaust Valve Guide Standard Style +.003in OD - Single
Regular price $6.99 USDRegular price$7.59 USD-$0.60 USD Sale price $6.99 USD -
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GSC P-D Porsche GT3 Cup 996/997 Intake/Exhaust Valve Guide Standard Style +.001in OD - Single
Regular price $6.99 USDRegular price$7.59 USD-$0.60 USD Sale price $6.99 USD -
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GSC P-D Porsche GT3 CUP 996/997 Manganese Bronze STD Style Intake/Exhaust Valve Guide - SET OF 12
Regular price $74.99 USDRegular price$87.61 USD-$12.62 USD Sale price $74.99 USD -
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GSC P-D Porsche GT3 CUP 996/997 Manganese Bronze STD Style Intake/Exhaust Valve Guide - Single
Regular price $6.99 USDRegular price$7.59 USD-$0.60 USD Sale price $6.99 USD -
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GSC P-D Nissan VR30DDTT Manganese Bronze Stopper Style Intake Valve Guide +.003in OD - Single
Regular price $6.99 USDRegular price$7.59 USD-$0.60 USD Sale price $6.99 USD -
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GSC P-D Nissan VR30DDTT Manganese Bronze Stopper Style Intake Valve Guide +.001in OD - Single
Regular price $6.99 USDRegular price$7.59 USD-$0.60 USD Sale price $6.99 USD -
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GSC P-D Nissan VR30DDTT Manganese Bronze Stopper Style Intake Valve Guide - Set of 12
Regular price $74.99 USDRegular price$87.61 USD-$12.62 USD Sale price $74.99 USD -
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GSC P-D Nissan VR30DDTT Manganese Bronze Stopper Style Intake Valve Guide - Single
Regular price $6.99 USDRegular price$7.59 USD-$0.60 USD Sale price $6.99 USD -
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GSC P-D Nissan VR30DDTT Manganese Bronze Stopper Exhaust Valve Guide +.003in Oversize OD - Single
Regular price $6.99 USDRegular price$7.59 USD-$0.60 USD Sale price $6.99 USD -
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GSC P-D Nissan VR30DDTT Manganese Bronze Stopper Exhaust Valve Guide +.001in Oversize OD - Single
Regular price $6.99 USDRegular price$7.59 USD-$0.60 USD Sale price $6.99 USD -
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GSC P-D Nissan VR30DDTT Manganese Bronze Stopper Style Exhaust Valve Guide - Set 12
Regular price $74.99 USDRegular price$87.61 USD-$12.62 USD Sale price $74.99 USD -
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GSC P-D Nissan VR30DDTT Manganese Bronze Stopper Style Exhaust Valve Guide - Single
Regular price $6.99 USDRegular price$7.59 USD-$0.60 USD Sale price $6.99 USD -
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GSC P-D Audi R8/Lambirghini Huracan V10 5.2L +.001in OD Stopper Style Int/Exh Valve Guide - Single
Regular price $6.99 USDRegular price$7.59 USD-$0.60 USD Sale price $6.99 USD -
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GSC P-D Audi R8/Lambirghini Huracan V10 5.2L Int/Exh Stopper Style Valve Guide Set - Set of 10
Regular price $62.99 USDRegular price$73.01 USD-$10.02 USD Sale price $62.99 USD -
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GSC P-D Audi R8/Lambirghini Huracan V10 5.2L Stopper Style Int/Exh Valve Guide - Single
Regular price $6.99 USDRegular price$7.59 USD-$0.60 USD Sale price $6.99 USD -
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GSC P-D Ford Coyote Gen 3 Intake/Exhaust Valve Guide Set - Set of 16 (Use OEM or GSC 1102)
Regular price $99.99 USDRegular price$116.81 USD-$16.82 USD Sale price $99.99 USD -
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GSC P-D Toyota/BMW B58 / BMW S58 Manganese Bronze Intake Valve Guide w/Stopper - Set of 12
Regular price $74.99 USDRegular price$87.61 USD-$12.62 USD Sale price $74.99 USD -
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GSC P-D BMW/Toyota B58 / BMW S58 Manganese Bronze Exhaust Valve Guide w/Stopper - Set of 12
Regular price $74.99 USDRegular price$87.61 USD-$12.62 USD Sale price $74.99 USD -
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GSC P-D Ford 5.0L Coyote Gen 1/Gen 2 Int/Exh Valve Guide w/Stopper +.003in Oversize OD - Single
Regular price $6.99 USDRegular price$7.59 USD-$0.60 USD Sale price $6.99 USD -
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GSC P-D Ford 5.0L Coyote Gen 1/Gen 2 Int/Exh Valve Guide w/Stopper +.001in Oversize OD - Single
Regular price $6.99 USDRegular price$7.59 USD-$0.60 USD Sale price $6.99 USD
Empower Your JDM Engine With GSC Power Division Components
Discover the GSC Power Division collection at HD Werks, offering genuine, high-performance components engineered for superior engine and powertrain upgrades. These original parts, designed for racing and aftermarket tuning, deliver custom solutions that optimize power output and dynamic control. Crafted with Japanese innovation, GSC products provide authentic quality and robust performance for both track and street use. Experience the perfect blend of original design and aggressive performance. Shop our GSC Power Division range for original components that transform your vehicleís dynamics.