SBC Xtreme Hyd. Roller Cam XR258HR

The SBC Xtreme Hyd. Roller Cam XR258HR from COMP CAMS is a high-performance roller camshaft engineered for small-block Chevrolet engines demanding aggressive power delivery and reliable hydraulic valve actuation. This camshaft is built for enthusiasts and professionals who require precise valve timing control, whether for street performance, off-road duty, or competition applications. The roller design reduces friction and wear on lifters and pushrods, translating to extended engine life and consistent performance under demanding conditions.

COMP CAMS engineered the XR258HR with an advanced roller profile that optimizes valve lift and duration for aggressive fuel atomization and scavenging. The hydraulic roller design uses precision-ground lobes and a robust core to handle elevated spring pressures without deflection or premature wear. At 9.83 lbs, this camshaft delivers a substantial mass that maintains momentum through the valve train, ensuring crisp, repeatable valve events across the RPM range. The compact dimensions (24.7 inches in length) ensure straightforward installation in standard SBC engine blocks without requiring extensive modification or custom clearancing.

Technicians and engine builders favor the SBC Xtreme Hyd. Roller Cam XR258HR for street-strip engines, truck performance builds, and recreational off-road platforms where reliability and repeatability matter. The hydraulic roller design is compatible with OEM SBC pushrods and standard rocker assemblies, minimizing ancillary expenses and installation complexity. This camshaft pairs seamlessly with performance cylinder heads, high-flow intake manifolds, and upgraded fuel-injection systems to unlock mid-range torque and peak horsepower. Verify valve clearance and pushrod length during installation to ensure optimal valve train geometry and long-term durability.