We make modifying your car simple.

85ÖCTANE is a premium aftermarket automotive marketplace built for enthusiasts who want to modify their vehicles with confidence. We know the frustration of juggling fifteen browser tabs, cross-referencing part numbers, and guessing whether a component will actually fit your specific make, model, and year. So we built a better way. Select your vehicle once, and every part you browse is filtered to fit — no more wasted returns, no more guesswork, no more scrolling through forums at midnight to find a straight answer.

Our platform brings together three things every builder needs: a vehicle-specific store where every part is guaranteed to fit, an interactive build configurator that lets you visualize modifications before you spend a dollar, and a community-driven gallery where real owners share their builds, their parts lists, and their hard-earned lessons. Whether you're chasing horsepower on a weekend project car, dialing in the stance on your daily driver, or building a show-stopping feature car, 85ÖCTANE gives you the tools to plan it, build it, and share it.

We are a small, independent team of automotive enthusiasts and software builders who got tired of the fragmented, clunky experience of buying aftermarket parts online. We've been in your garage — scraping knuckles, second-guessing fitment, and waiting on the wrong part to ship back. Every feature on this site was built to solve a problem we've personally hit. We're committed to keeping the experience fast, honest, and built by people who actually care about cars, not by a faceless marketplace optimized for clicks. That's the 85ÖCTANE promise: find parts that fit, plan your build, and build your legacy.