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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Take a look at the parts Redline360 customers are checking out right now, from exhaust systems and suspension to steering wheels, lighting, and more. Some change the way your car sounds or handles; others give the interior or exterior a look that feels more like yours. Browse the current favorites and see what fits your build.
Browse customer favorites for cars and trucks, from headlights and tail lights to coilovers, lowering springs, and more. Some upgrades change the look, some help you dial in the stance, and others add parts you’ll appreciate every time you drive. Take a look through the popular picks and see what fits your build.
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...
See what we’re up to around the car scene, from track events and sponsored builds to behind-the-scenes looks at Redline360. Follow the events we attend, the people and cars we support, and the latest news from the community.