Homepage - Gwatney Performance

Shop by Department

Apparel

(8)

Braking

(14)

Camshafts & Valvetrain

(150)

Chassis & Suspension

(12)

Drivetrain

(115)

Engine

(272)

Exhaust

(113)

Exterior & Accessories

(8)

Fittings and Hose

(32)

Fuel

(160)

Garage Sale

(21)

Gauges & Accessories

(4)

Ignition & Electronics

(53)

Induction

(127)

Oils & Fluids

(16)

Packages

(34)

Power Adders

(121)

Suspension

(4)

Tuning

(7)

Wheels & Tires

(14)

Discount Programs

myGPI Reward Program

Start getting the most out of every GPI purchase you make. As a myGPI member, you can cash in on exclusive benefits that make shopping with us even more rewarding.

Military Discount

Gwatney Performance offers a Military Discount on most products to extend our gratitude to those who have served or are serving our country in the US armed forces.

Dealer Program

We are always looking to partner with reputable business looking to carry and support our brand. Please check the dealer application page for more details and requirements.

Recent Reviews

The folks at GPI are both professional and very knowledgeable. I was treated fairly. All my questions were answered to my satisfaction. They will treat your baby as if it was their own. I was briefed every step of the way. It is apparent the fine men there are dedicated to satisfying the customer.

GPI FTW simple as that. The customer service is the best. You can't go wrong with buying from these guys.

These guys tuned my 2016 Sierra and after having it for about two days now, I absolutely love how it changed this truck. Better fuel economy, none of that sluggish GM shift points. 10/10 in my books and A+ customer service, I would trust these guys with any performance work that you need.

Bought their ported/rod modded intake manifold for my 2010 Camaro SS L99 and holy crap, it's amazing! The porting looked well done and I am very impressed!

Great customer service. Been bothering Dan for 3 days asking many questions, some over and over again, and he answered all of them like an expert. Bought 3.91 gears from them yesterday and will be going back shortly for a cam. Appreciate it fellas!

Great people and great service.

WHAT IS REQUIRED TO HAVE AN AFFIRM ACCOUNT?

Be 18 years or older (19 years or older in Alabama or if you’re a ward of the state in Nebraska).

Provide a valid U.S. or APO/FPO/DPO home address. Buy with Affirm is not currently available to West Virginia residents.

Provide a valid U.S. mobile or VoIP number and agree to receive SMS texts. The phone account must be registered in your name.

Provide your full name, email address, date of birth, and the last 4 digits of your social security number to help us verify your identity.

DO I HAVE A CREDIT LIMIT WITH AFFIRM?

Unlike a credit card, Affirm is not a revolving line of credit. While customers can take out multiple Affirm loans at once, each Affirm loan application is evaluated separately as a closed-end transaction. An application from a returning customer may be denied, however, if that customer has failed to repay other Affirm loans on time or if the customer shows excessive borrowing behavior.

WHY WAS I PROMPTED FOR A CHECKING ACCOUNT?

Affirm sometimes requires additional information to consider a credit application. Such information may include an active checking account, which helps Affirm verify your identity and your ability to repay the requested loan. If they prompt you for this information but you are unable to provide it, Affirm will be unable to approve your credit application.

See All FAQs