4-1 vs 4-2-1 Headers - What is the difference? What makes more power?
A question we get a lot is: What's the difference between 4-1 headers and 4-2-1 headers? Which header design is better and which header m...
We specialize in the best aftermarket performance car and truck parts and pride ourselves on exceptional customer service.
We have a network of seven distribution warehouses around the United States and ship from the closest warehouse that has the part you ordered in stock. We primarily ship from California, Nevada, Florida, Texas, Arizona, Michigan, Pennsylvania, and offer local pickup in Northern California.
We also have a full service shop where we can install and set up your parts!
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Browse our most popular performance car parts and truck accessories. From aftermarket headlights and tail lights to suspension upgrades like coilovers and lowering springs, these top picks deliver the performance and style you’re looking for. See what other gearheads are loving!
If it’s making noise in the car scene, you’ll find it right here. From exhausts with attitude to sharp-handling suspension and race-inspired steering wheels, these are the aftermarket performance car parts everyone is talking about. See what’s trending now!
Stay updated with our blog, where we share industry insights and tips—from choosing the best performance shock upgrades to exploring turbocharger innovations and suspension enhancements. Learn more to stay ahead of the game!
A question we get a lot is: What's the difference between 4-1 headers and 4-2-1 headers? Which header design is better and which header m...
Rival 4x4 USA designs and manufactures high-quality aluminum off-road components trusted by millions of enthusiasts worldwide. From skid ...
Your browser does not support our video.Upgrading your Toyota Tacoma’s shocks can drastically improve its ride quality, handling, and o...
Find out what’s new in our community. From trackside events to exclusive sponsorships and behind-the-scenes stories, we’re bringing performance car parts enthusiasts together. Stay in the loop and be part of the movement.