Unleash JDM Engine Power With Grams Performance Upgrades
Unleash superior power with the Grams Performance collection at HD Werks, featuring genuine, high-performance components engineered for racing and aftermarket excellence. These original parts deliver custom upgrades that boost engine output and optimize dynamic driving performance. Designed with Japanese precision, each product offers authentic quality and reliable enhancements for both track and street. Experience aggressive tuning with parts built for superior performance and durability. Shop our Grams Performance range for original components that redefine your vehicleís capabilities.
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Vendor:Grams PerformanceGrams Performance 11-14 Ford Mustang 5.0L Coyote w/o IMRC Cross Over Fuel Lines (For G50-04-10XX)
Regular price $149.99Regular price$157.99-$8.00 Sale price $149.99 -
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Vendor:Grams PerformanceGrams Performance 11-18 Ford Mustang 5.0L Coyote Fuel Rail - Black
Regular price $199.99Regular price$209.99-$10.00 Sale price $199.99 -
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Vendor:Grams PerformanceGrams Performance 11-18 Ford Mustang 5.0L Coyote Fuel Rail - Raw
Regular price $188.99Regular price$198.44-$9.45 Sale price $188.99 -
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Vendor:Grams PerformanceGrams Performance 05-18 Dodge Hemi 5.7L/6.1L/6.2L/6.4L Cross Over Fuel Lines (For G50-03-10XX)
Regular price $149.99Regular price$157.99-$8.00 Sale price $149.99 -
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Vendor:Grams PerformanceGrams Performance 05-18 Dodge Hemi 5.7L/6.1L/6.2L/6.4L Fuel Rail - Black
Regular price $210.99Regular price$221.54-$10.55 Sale price $210.99 -
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Vendor:Grams PerformanceGrams Performance 05-18 Dodge Hemi 5.7L/6.1L/6.2L/6.4L Fuel Rail - Raw
Regular price $188.99Regular price$198.44-$9.45 Sale price $188.99 -
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Vendor:Grams PerformanceGrams Performance 2010-2015 Chevy Camaro LS3/L99 Cross Over Fuel Lines (For G50-02-10XX)
Regular price $159.99Regular price$167.99-$8.00 Sale price $159.99 -
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Vendor:Grams PerformanceGrams Performance 10-15 Chevrolet Camaro LS3/L99 Fuel Rail - Black
Regular price $210.99Regular price$221.54-$10.55 Sale price $210.99 -
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Vendor:Grams PerformanceGrams Performance 10-15 Chevrolet Camaro LS3/L99 Fuel Rail - Raw
Regular price $188.99Regular price$198.44-$9.45 Sale price $188.99 -
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Vendor:Grams PerformanceGrams Performance 12-13 Civic Si Plug and Play Adapter (for 550/750/1000cc Injectors)
Regular price $9.99Regular price$10.49-$0.50 Sale price $9.99 -
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Vendor:Grams PerformanceGrams Performance 1600cc Genesis 2.0T INJECTOR KIT
Regular price $883.99Regular price$928.19-$44.20 Sale price $883.99 -
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Vendor:Grams PerformanceGrams Performance 1600cc E90/E92/E93 INJECTOR KIT
Regular price $1,767.99Regular price$1,856.39-$88.40 Sale price $1,767.99 -
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Vendor:Grams PerformanceGrams Performance 1600cc E36/ E46 INJECTOR KIT
Regular price $1,325.99Regular price$1,392.29-$66.30 Sale price $1,325.99 -
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Vendor:Grams PerformanceGrams Performance 1600cc E30 INJECTOR KIT
Regular price $883.99Regular price$928.19-$44.20 Sale price $883.99 -
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Vendor:Grams PerformanceGrams Performance 1600cc 996TT/997TT INJECTOR KIT
Regular price $1,325.99Regular price$1,392.29-$66.30 Sale price $1,325.99 -
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Vendor:Grams PerformanceGrams Performance 1600cc 911/ 996/ 997 INJECTOR KIT
Regular price $1,325.99Regular price$1,392.29-$66.30 Sale price $1,325.99 -
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Vendor:Grams PerformanceGrams Performance 1600cc BRZ/FRS INJECTOR KIT
Regular price $883.99Regular price$928.19-$44.20 Sale price $883.99 -
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Vendor:Grams PerformanceGrams Performance 1600cc 02-11 WRX/ 07+ STi/ Forester XT/ 07-11 Legacy INJECTOR KIT
Regular price $883.99Regular price$928.19-$44.20 Sale price $883.99 -
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Vendor:Grams PerformanceGrams Performance 1600cc Miata NC INJECTOR KIT
Regular price $883.99Regular price$928.19-$44.20 Sale price $883.99 -
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Vendor:Grams PerformanceGrams Performance 1600cc Miata NA/NB/ 1.6/ 1.8 INJECTOR KIT
Regular price $883.99Regular price$928.19-$44.20 Sale price $883.99 -
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Vendor:Grams PerformanceGrams Performance 1600cc 79-92 RX7/ RX8 INJECTOR KIT
Regular price $442.99Regular price$465.14-$22.15 Sale price $442.99 -
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Vendor:Grams PerformanceGrams Performance 1600cc VR6 (24v) INJECTOR KIT
Regular price $1,325.99Regular price$1,392.29-$66.30 Sale price $1,325.99 -
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Vendor:Grams PerformanceGrams Performance 1600cc VR6 (12v) INJECTOR KIT
Regular price $1,325.99Regular price$1,392.29-$66.30 Sale price $1,325.99 -
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Vendor:Grams PerformanceGrams Performance 1600cc 1.8T/ 2.0T INJECTOR KIT
Regular price $883.99Regular price$928.19-$44.20 Sale price $883.99 -
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Vendor:Grams PerformanceGrams Performance 1600cc TC/XB/ 1ZZ/ 2ZZ/ 3S-GTE/ 4AGE/ 5SFE INJECTOR KIT
Regular price $883.99Regular price$928.19-$44.20 Sale price $883.99 -
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Vendor:Grams PerformanceGrams Performance 1600cc Sentra SE-R QR25DE INJECTOR KIT
Regular price $883.99Regular price$928.19-$44.20 Sale price $883.99 -
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Vendor:Grams PerformanceGrams Performance 1600cc 240SX/ S13/ S14/ S15/ SR20/ G20 Top Feed 11mm INJECTOR KIT
Regular price $883.99Regular price$928.19-$44.20 Sale price $883.99 -
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Vendor:Grams PerformanceGrams Performance 1600cc 240SX/ S13/ S14/ S15/ SR20/ G20 Top Feed 14mm INJECTOR KIT
Regular price $883.99Regular price$928.19-$44.20 Sale price $883.99 -
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Vendor:Grams PerformanceGrams Performance 1600cc 300Z Top Feed Only 14mm INJECTOR KIT
Regular price $1,325.99Regular price$1,392.29-$66.30 Sale price $1,325.99 -
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Vendor:Grams PerformanceGrams Performance 1600cc 300Z Top Feed Only 11mm INJECTOR KIT
Regular price $1,325.99Regular price$1,392.29-$66.30 Sale price $1,325.99 -
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Vendor:Grams PerformanceGrams Performance 1600cc Evo X INJECTOR KIT
Regular price $883.99Regular price$928.19-$44.20 Sale price $883.99 -
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Vendor:Grams PerformanceGrams Performance 1600cc NSX/ C series (98+) INJECTOR KIT
Regular price $1,325.99Regular price$1,392.29-$66.30 Sale price $1,325.99 -
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Vendor:Grams PerformanceGrams Performance 1600cc 00-05 S2000 INJECTOR KIT
Regular price $883.99Regular price$928.19-$44.20 Sale price $883.99 -
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Vendor:Grams PerformanceGrams Performance 1600cc K Series (Civic/ RSX/ TSX)/ D17/ 06+ S2000 INJECTOR KIT
Regular price $883.99Regular price$928.19-$44.20 Sale price $883.99 -
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Vendor:Grams PerformanceGrams Performance 1600cc B/ D/ F/ H (exc d17) INJECTOR KIT
Regular price $883.99Regular price$928.19-$44.20 Sale price $883.99