COMP Cams Camshaft Kit LS1 XR275HR-12

If you're looking to get more power out of your GM LS engine, especially in the mid-range and up towards the redline, this COMP Cams XR275HR-12 camshaft kit is a solid option. This kit is designed to wake up your engine for street and strip use, giving you that noticeable bump in performance when you need it most. It's a hydraulic roller camshaft, which means it's built for efficiency and longevity compared to older flat tappet designs.

This isn't just a camshaft; it's a complete K-Kit, meaning COMP Cams has bundled everything you'll need for a proper installation. Inside, you'll find the camshaft itself, a set of lifters, valve springs, retainers, valve locks, and valve stem seals. It also includes a timing chain set to ensure your valvetrain stays perfectly synchronized. For applications that might need it, assembly lube is included, along with decals and detailed instructions to guide you through the process. This kit is engineered to work with a wide range of GM LS engines, from 4.8L to 7.0L displacements, including popular variants like the LS1, LS2, LS3, LS6, and LS7, found in everything from Corvettes and Camaros to trucks and SUVs.

Because this camshaft significantly alters your engine's breathing characteristics, you will need a compatible engine programmer to adjust the fuel and ignition timing. This is crucial for the engine to run correctly and safely with the new camshaft profile. While this kit offers a significant performance improvement, please note that it is not CARB approved and cannot be shipped to California.