SBC Xtreme Nitrous Hyd. Roller Cam XN288HR

The SBC Xtreme Nitrous Hyd. Roller Cam XN288HR from COMP CAMS is purpose-built for small-block Chevrolet engines running aggressive nitrous oxide systems and seeking maximum performance under boost. This hydraulic roller cam is engineered specifically for engines that demand aggressive valve lift and duration to handle the cylinder pressures generated by nitrous injection, making it the choice for bracket racers, street performance builds, and weekend warriors pushing their SBC powerplants to the limit.

The XN288HR features a hydraulic roller lifter design that reduces friction compared to flat-tappet alternatives, enabling higher RPM capability and improved reliability under sustained nitrous load. Roller cams distribute side loads more effectively across the lifter face, reducing wear and allowing tighter tolerances in valve train geometry. The "Xtreme Nitrous" designation indicates this profile is optimized with sufficient valve overlap and duration to promote aggressive scavenging and fuel charge density—critical factors when nitrous increases oxygen availability in the combustion chamber.

Hydraulic actuation provides automatic lash adjustment, eliminating the complexity of manual valve clearance tuning while maintaining consistent performance across temperature swings and engine conditions. This cam is ideal for those looking to maximize their nitrous horsepower gains, whether upgrading a carbureted small-block or retrofitting a modern fuel-injected platform.