GM LS XFI Cam - XR275HR13

The COMP Cams GM LS XFI Cam XR275HR13 is a hydraulic roller camshaft designed for street and light performance driving in LS-based engines equipped with fuel injection. This camshaft serves as a balanced upgrade from stock, enhancing low-to-mid-range torque and throttle response without necessitating extensive engine tuning or extreme valve spring pressures. It is an ideal choice for enthusiasts looking to improve their LS engine's performance while maintaining reliability.

The XR275HR13 designation indicates a hydraulic roller design that is compatible with XFI (LS fuel injection) systems, ensuring smooth integration with factory or programmable engine control modules. Hydraulic roller camshafts utilize self-adjusting lifters that maintain zero lash across thermal cycles, which eliminates the need for manual valve adjustments and simplifies installation. COMP Cams employs a proven manufacturing process that guarantees tight tolerances and durability, with the roller design minimizing friction and wear compared to flat-tappet alternatives.

This camshaft is particularly suited for LS engine platforms, including 5.3L, 6.0L, and 6.2L variants found in trucks, SUVs, and performance builds. Owners can expect noticeable power gains while retaining the driveability of their vehicles. The camshaft's geometry is designed to ensure smooth valve events that work harmoniously with OEM or upgraded fuel injection systems, preventing tuning complications.