Sale and Clearance

Unleash the full potential of your 6.0L Powerstroke with this Turbo Back Race Exhaust System, available in both 4" and 5" stainless steel options. By removing restrictive emissions components such as the catalytic converter and DPF filter, this sy...

Upgrade your Duramax with a 4" or 5" Downpipe-Back Race Exhaust System designed to maximize exhaust flow and off-road performance. Built from high-grade stainless steel, this system removes restrictive factory components, improving power, throttle...

Transform your 2013–2021 RAM Cummins 6.7L into a high-performance machine with this complete all-in-one delete kit. By removing restrictive DPF, DEF, and EGR systems, this kit delivers improved airflow, cooler exhaust temps, and more reliable off-...

Unlock the full potential of your 2011–2019 Ford F-250 and F-350 6.7L Powerstroke diesel truck with this complete All-In-One Delete Kit. Designed for off-road use, it provides all the parts you need for a full delete, ensuring improved power, air...

Transform your 2013–2021 RAM Cummins Cab & Chassis truck with this complete all-in-one delete kit. By removing restrictive DPF, DEF, and EGR systems, you unlock significant power gains, enhanced efficiency, and extended engine life—all in one ...

Introducing the next generation Evolution CTS3: all-new, full-Color Touch Screen CTS3. The CTS3 will continue to include all of the great features, benefits, and extended coverage from the CTS2 product line, all while adding a sleek, new exterior ...

We are happy to announce all-new cast zinc pillar display mounts available for order now to offer a more permanent and vehicle specific mount for our CTS3 based devices. These mounts have been specifically engineered for an OEM look and fitment to...

The Holley GM Gen V LT Ultra Lo-Ram intake manifold kits are designed for GM Gen V LT engines equipped with GM LT cylinder heads. These intake manifolds will work with OE or aftermarket cylinder heads. The Ultra Lo-Ram intake manifolds are designe...

The CAN to USB communication cable provides you with real tuning time access to the ECU. This cable can be used with Sniper 2 EFI tuning software, which can be downloaded for free from the Support section of Holley's website.Features: Real time 8’...

Designed to work with the 565-300 HyperSpark distributors with a clockwise rotation, used in many applications. Tool was created to assist in aligning the housing to the rotor for the correct reference angle.Features: Small indicator to point out ...

Make something old, new again with this upgrade kit that will convert a CS2 and CTS2 Juice with Attitude to our latest CTS3 display. This kit will include the new CTS3 monitor, a new window mount and update cable. This will allow total integration...

Looking for a plug and play alternative for your stock or built late model factory EFI engine? How about a replacement ECU for your older Holley C950? Holley has you covered. HP EFI ECU and harness kits are designed to be used with popular factory...

Unlock more power and efficiency from your 2017–2023 Chevrolet Silverado & GMC Sierra 2500/3500HD 6.6L Duramax L5P with this 3.5" turbocharger downpipe upgrade. By fully removing the Diesel Oxidation Catalyst (DOC), this pipe maximizes exhaust...

Boost your Powerstroke’s efficiency, reliability, and performance by eliminating the restrictive factory EGR system. Vehicle Compatibility 2011 Ford F250/F350/F450/F550 6.7L Powerstroke 2012 Ford F250/F350/F450/F550 6.7L Powerstroke 2013 Ford F25...

This in-tank fuel pump module is a high-pressure unit that flows 255 liters per hour (LPH) and is capable of supporting EFI (electronic fuel injection) engines producing up to 550 horsepower. Fuel pressure is internally regulated to 58 psi elimina...

Free your Cummins with a 4” stainless race pipe built for power and durability. Upgrade your 2007.5–2012 Ram 2500/3500 Cummins 6.7L with this 4” stainless steel DPF delete race pipe, engineered for off-road performance. By replacing the factory ca...

Unleash the full performance of your 2017–2023 Duramax 6.6L L5P with the Black Bandit Downpipe-Back Race Exhaust System. Starting directly from the downpipe, this exhaust eliminates the factory catalytic converter and DPF filter for maximum airflo...

Eliminate EGR system issues, increase efficiency, and extend your Duramax’s engine life. Vehicle Compatibility 2006 GMC Sierra 2500/3500 6.6L Duramax LBZ 2007 GMC Sierra 2500/3500 6.6L Duramax LBZ 2006 Chevrolet Silverado 2500/3500 6.6L Duramax L...

A complete off-road package designed to unlock maximum power, efficiency, and reliability for your Ford Powerstroke 3.0L diesel truck. Vehicle Compatibility 2018 Ford F150 Powerstroke 3.0L Diesel 2019 Ford F150 Powerstroke 3.0L Diesel Not compati...

The Duramax LBZ EGR Valve & Cooler Delete Kit is designed to eliminate the restrictive and failure-prone factory EGR system on late 2006 to early 2007 Duramax LBZ 6.6L engines. By removing the EGR valve and cooler, this kit improves airflow, r...

Discover Flexibility with the Autocal V3 DPF Delete Tuner – The Foundation of Custom Tuning! Unlock the full potential of your vehicle with the Autocal V3 DPF Delete Tuner. This device provides ultimate flexibility, especially for those who prefer...

Holley continues to push the envelope of intake design with its latest offering. The unique look of this intake will surely stand out from the crowd!Our latest release of fabricated "Dual Plenum" intake manifolds for GM LS1/2/6 and LS3/L92 engines...

Holley's Sniper Stealth 4150 Master Kit gives you carburetor styling but functions just like the Sniper! A 4150 stealth is a great way to upgrade your ride to fuel injection in a cost-efficient way with just 4 simple connections required. Take you...

The Sonoma Crew Shirt has an athletic fit, 3 button style with the Simpson bar logo on the sleeve. Our most breathable fabric and tasteful contrast piping finish out this winning shirt. Body is micro woven polyester featuring shoulders with side p...