Grams Performance Fuel Injector Rail

Grams Performance Fuel Injector Rails: Billet Precision for High-Performance Builds

Grams Performance has built its reputation at the intersection of motorsport engineering and street-performance parts. Fuel injector rails might not always get the spotlight, but in a high-horsepower build, they are the critical link between your fuel system and the injectors themselves — and Grams treats them with the same exacting standards as every other component in their lineup.

CNC-Machined Billet Construction

Grams Performance billet fuel rails start with a foundation of CNC-machined 6061 billet aluminum, chosen for its exceptional strength-to-weight ratio and corrosion resistance. Their fuel rail designs feature a large .669" internal bore, engineered to deliver more consistent fuel pressure and volume — exactly what high-flow injectors demand under hard acceleration or boost.

• CNC Machined Billet 6061 Aluminum — raw finish for easy engine bay color-matching
• Large .669" Internal Bore — maintains consistent fuel pressure under high-demand conditions
• -8 ORB Ports on each end for flexible plumbing and easy fitting access
• 2,000+ HP Ready construction with steel mounting brackets and hardware
• Direct OEM Replacement Fitment — drop-in compatibility for a clean, straightforward installation

Designed to Complement Grams Fuel Injectors

Designed as direct OEM replacements offering drop-in compatibility, Grams Billet Fuel Rails are the perfect complement to their line of high-performance fuel injectors. Whether you are running a naturally aspirated build pushing the limits or a forced-induction setup chasing four-digit horsepower numbers, Grams fuel rails ensure the fuel supply side of the equation never becomes the weak link.

-8 ORB ports are added to each end of the fuel rails for easy access to fittings and plumbing flexibility. Grams also offers dedicated Fuel Rail Plumbing Kits that include port fittings, pre-assembled lines, and an SAE adapter — making the entire installation as seamless as possible.

Wide Platform Coverage

Grams Performance is a division of Group-A Autosports Engineering focused on bringing the best performing and highest quality parts for the European and Modern Muscle performance tuning market segments. Their fuel rail catalog reflects that broad focus, with applications including the popular 6.2L LS3/L99, 5.0L Coyote, and 5.7L/6.1L/6.4L Dodge Hemi platforms — engines that form the backbone of modern performance builds.

For nearly two decades, Grams Performance and Design's parent company has committed itself to developing cutting-edge racing products, with active involvement in various forms of motorsports as well as OEM product development and extensive engineering studies. That heritage shows in the detail and durability of every fuel rail they produce.

The Right Rail for a Serious Build

When building or upgrading a high-performance fuel system, every component in the flow path matters. Grams Performance fuel injector rails are engineered to handle the demands of race-grade injectors without compromise — maintaining steady pressure, offering clean plumbing options, and fitting as easily as a factory part. Explore the full Grams Performance catalog to find the rails, injectors, and fuel system components that fit your specific platform and power goals.