Holley Performance

Want to make the switch from the original Sniper EFI to Sniper 2 and don't want to rewire your system? The new Sniper 2 upgrade kits are designed to do exactly that! Included with each Sniper 2 Plug and Play upgrade system is an adapter solution t...

Let's face it, you love driving your classic car, but dread the hassles with your Rochester 2GC carburetor. Today's fuels are blended for modern fuel injection, not that old 2Jet carburetor from 50+ years ago.Holley makes it easy to convert your c...

The EZX is the ultimate performance upgrade for your 3.0L Duramax powered Silverado 1500 or Sierra 1500, offering total control over your truck with power adjustability on-the-fly. Offering easy installation, improved fuel economy, better towing p...

The Simpson Supercoil racing suit is the ultimate in comfort, style, and performance. Designed and manufactured in the USA.Features: Designed and manufactured in Hawthorne, CA USA Embroidered logos and designs Lightweight Titanium Nomex® fa...

The Holley EFI billet aluminum Pro Stock throttle body is designed to fit Visner Engine Development's oval mounting flange.Features: Massive 25 Square Inch, 7"x 4.5" Oval throttle opening Designed to fit Visner Engine Development's oval mounting f...

Add even more power to your Gen III Hemi engine with a Holley Hi-Ram intake manifold. This cast intake manifold has large intake ports - fits 2009-up 5.7L, 2005-2010 6.1L & 2011-up 6.4L engines.The Holley Hi-Ram intake manifold is for high-per...

Take control of your LS engine with Terminator X! Don't settle for a junkyard ECU with a cumbersome tuning interface when you can have complete control of your engine, self-learning fuel strategies and the proven, race-winning technology of Holley...

Take control of your LS engine with Terminator X! Don't settle for a junkyard ECU with a cumbersome tuning interface when you can have complete control of your engine, self-learning fuel strategies and the proven, race-winning technology of Holley...

Take control of your LS engine with Terminator X! Don't settle for a junkyard ECU with a cumbersome tuning interface when you can have complete control of your engine, self-learning fuel strategies and the proven, race-winning technology of Holley...

Take control of your LS engine with Terminator X! Don't settle for a junkyard ECU with a cumbersome tuning interface when you can have complete control of your engine, self-learning fuel strategies and the proven, race-winning technology of Holley...

Take control of your LS engine with Terminator X! Don't settle for a junkyard ECU with a cumbersome tuning interface when you can have complete control of your engine, self-learning fuel strategies and the proven, race-winning technology of Holley...

Holley EFI fuel kits are the perfect addition to your Terminator or Holley EFI kit. They're engineered using Holley fuel pumps, regulators, and filters, coupled with quality Earl's plumbing to provide a fuel system tailored to the needs of your Te...

Introducing Coyote Twin Independent Variable Cam Timing Control from Holley EFI! Do you have a coyote crate engine going in your dream car? Is your weekend road race warrior powered by a coyote junkyard engine with locked cams? Unlock the full pot...

Introducing the Sniper EFI BBD, for Jeep CJ's! The Sniper EFI BBD will be right at home on any 258ci powered trail rig, or weekend cruiser. Not only does the Sniper EFI BBD offer superior throttle response and WOT power over the carburetor, but yo...

The #1 EFI conversion system just got better! Introducing Sniper 2 EFI - a self-tuning, easy-to-install, EFI conversion for common 4-barrel (4150 flange) style carburetors. We took everything that we learned from the original Sniper EFI system and...

The #1 EFI conversion system just got better. Introducing Sniper 2 EFI - a self-tuning, easy-to-install, EFI conversion for common 4-barrel (4150 flange) style carburetors. We took everything that we learned from the original Sniper EFI system and...

The #1 EFI conversion system just got better! Introducing Sniper 2 EFI - a self-tuning, easy-to-install, EFI conversion for common 4-barrel (4150 flange) style carburetors. We took everything that we learned from the original Sniper EFI system and...

The #1 EFI conversion system just got better. Introducing Sniper 2 EFI - a self-tuning, easy-to-install, EFI conversion for common 4-barrel (4150 flange) style carburetors. We took everything that we learned from the original Sniper EFI system and...

The EZX is the ultimate performance upgrade for your 4th Gen Ram Cummins offering total control over your truck with power adjustability on-the-fly. Offering easy installation, improved fuel economy, better towing performance and feature control t...

The EZX is the ultimate performance upgrade for your 5th Gen Ram Cummins offering total control over your truck with power adjustability on-the-fly. Offering easy installation, improved fuel economy, better towing performance and feature control t...

The EZX is the ultimate performance upgrade for your late model Ford Power Stroke offering total control over your truck with power adjustability on-the-fly. Offering easy installation, improved fuel economy, better towing performance and feature ...

The EZX is the ultimate performance upgrade for your late model Ford Power Stroke offering total control over your truck with power adjustability on-the-fly. Offering easy installation, improved fuel economy, better towing performance and feature ...

The EZX is the ultimate performance upgrade for your late model Ford Power Stroke offering total control over your truck with power adjustability on-the-fly. Offering easy installation, improved fuel economy, better towing performance and feature ...

AN ALL NEW LOOK, AN ALL NEW ATTITUDE! INTRODUCING THE JUICE WITH ATTITUDE CTS3 LINE AVAILABLE NOW!Featuring our state-of-the-art CTS3 technology, the Juice with Attitude just entered the a whole new realm to continue pushing the limits of on-the-f...