Best SellersFuel DeliveryFuel RailsIn Stock ProductsMost Popular ProductsPerformance Parts
FAST LSX/LSXR/LSXRT Fuel Rails feature a larger internal diameter that dampens the pulses and provides increased fuel volume, ensuring that your injectors never run...
Best SellersFuel DeliveryFuel RailsIn Stock ProductsMost Popular ProductsPerformance Parts
FAST LSX/LSXR/LSXRT Fuel Rails feature a larger internal diameter that dampens the pulses and provides increased fuel volume, ensuring that your injectors never run...
ACCESSORIESBest SellersEngine ComponentsIn Stock ProductsMost Popular ProductsWiring Harnesses
FAST offers several main harness options to aC-Commodate most customers' needs. The XFI Main Harness is responsible for connecting your XFI ECU to sensors...
Best SellersFuel Components MiscFuel DeliveryIn Stock ProductsMost Popular Products
FAST XFI Fuel Injector Harnesses connect the XFI ECU to the fuel injectors. These harnesses are designed to aC-Commodate most common V8 engines from...
Best SellersEngine ComponentsIn Stock ProductsIntake ManifoldsMost Popular ProductsSystem Kits
The FAST LSXHR 103mm Intake Manifold is ideal for generating maximum power in boosted and naturally aspirated GM LS cathedral port engines. It ships...
Best SellersEngine ComponentsIn Stock ProductsIntake ManifoldsMost Popular ProductsSystem Kits
FAST has developed the industry’s first polymer tunnel ram-style intake manifold, ideal for generating maximum power in boosted and naturally aspirated engines. Available for...
Best SellersEngine ComponentsIn Stock ProductsIntake ManifoldsMost Popular Products
Replacement parts available. See 54039BUS for the upper shell. See 54039BLS for lower shell. Billet fuel rails available under 54023. Compatible throttle bodies available...
Best SellersEngine ComponentsIn Stock ProductsIntake Manifolds
The FAST LSX 102mm Intake Manifold for GM 4.8, 5.3 and 6.0 truck engines provides bolt-on performance gains without any loss in bottom-end drivability.This...
Best SellersEngine ComponentsIn Stock ProductsMost Popular ProductsThrottle Bodies
The Fast Big Mouth 102mm throttle body provides increased airflow through a smoother offset blade pivot. In addition we increased blade thickness to eliminate...