Relays are a required item whenever you want to use your XFI ECU to control a high-current device, such as a fuel pump or nitrous solenoid with one of its low-current outputs. FAST offers relays to cover many applications. When choosing a relay, it's very important that the relay current rating (shown in amps) be appropriate to the current requirements of the device you intend to control with it. So, if you're in need of a relay--think FAST relays.

More From This Category

FAST Distributor, XDi, Billet, Hall Effect Trigger, Locked Advance, Race Cam Sync Small Cap Distributor, For Chrysler B 383-400, Each

FAST Distributor, XDi, Billet, Hall Effect Trigger, Locked Advance, Race Cam Sync Small Cap Distributor, For Chrysler B 383-400, Each

$996.79

FAST Throttle Body, Big Mouth Billet 87mm Diameter, For Chrysler HEMI, Each

FAST Throttle Body, Big Mouth Billet 87mm Diameter, For Chrysler HEMI, Each

$914.30

FAST Black Billet Fuel Rail Kit for LS2 LSXr 102mm Intake Manifolds

FAST Black Billet Fuel Rail Kit for LS2 LSXr 102mm Intake Manifolds

$503.34

FAST LSX 92mm Intake Manifold Complete Hardware Kit

FAST LSX 92mm Intake Manifold Complete Hardware Kit

$134.22

FAST LSXHR 103mm Intake Manifold for GM Chev For Holden LS Cathedral Port Engines

FAST LSXHR 103mm Intake Manifold for GM Chev For Holden LS Cathedral Port Engines

$2,489.64

FAST Fuel Injectors, Precision-Flow, LS3/LS7 Profile, 242 lbs./hr, High Impedance, Set of 6

FAST Fuel Injectors, Precision-Flow, LS3/LS7 Profile, 242 lbs./hr, High Impedance, Set of 6

$1,405.38