LABOR DAY SALE
Work hard. Play harder.
Celebrate Labor Day with 10% off sitewide when you use code LABOR at checkout. PLUS earn DOUBLE Lethal Loyalty Points on every eligible purchase. Gear up, save more, and make the long weekend count—exceptions apply.
Free Shipping
Free on Orders Over $199
Most orders ship free when you spend $199 or more. Every order is also eligible for Route package protection — so if it gets lost, stolen, or damaged in transit, you’re covered. Exclusions apply on oversized items.
Affirm Financing
Build Now. Pay Over Time.
Spread out your build with Affirm financing. Choose your payment plan at checkout — no hidden fees, no surprises. The parts you need don’t have to wait for the perfect moment.
Extend Warranties
Your Parts, Protected.
Add an Extend warranty at checkout and keep your investment covered long after the install. File a claim in seconds if something goes wrong — no receipts to dig up, no runaround.
Check out these Popular Categories:
We don't just sell the parts, we use them:
2024 Mustang Dark Horse
8.87 at 154 and 1,049 rwhp on a Whipple. Factory headers, full interior.
2024 Mustang GT
830+ rwhp through a manual MT82, and a 10.67 on three pedals.
2026 Bronco
Lifted on 35s and forged wheels. Our Outer Banks, built for real life.
The complete guide
Not Sure Where to Start?
The S650 Mustang GT is one of the most buildable platforms on the road right now. The Coyote 5.0 responds to almost everything you throw at it — and the aftermarket has had plenty of time to figure out exactly what works.
The problem isn't finding parts. It's knowing which ones to buy first, what to pair with what, and what order makes sense for your build and your budget. Do you go exhaust before headers? Tune before or after the intake? Is a supercharger realistic before you sort out the fuel system? These are real questions that don't have generic answers.
Our Mustang Mod Guide covers every major upgrade category: cold air intakes, performance exhaust, long-tube headers, superchargers, fuel systems, suspension, wheels, and styling. For each one, we break down what it actually does, what gains you can realistically expect on the S650 platform, and which products we recommend — and why.
Whether you're starting with your first bolt-on or already planning a 700whp build, this is the starting point. Read it once and you'll know exactly where your build is headed next.
Every Build Earns
Sign up and we’ll drop 250 points in your account before you buy a thing. After that, every dollar you spend earns points toward your next order — discounts, free shipping, or actual Lethal Performance gear.
The more you build, the more you earn. Lethal Rewards runs four tiers — Bronze, Silver, Gold, and Platinum — with earning multipliers that scale as you climb. Hit Platinum and you earn points at 2x and get free shipping automatically on every order.
The car’s never done. Neither is the earning.