RS Skunk2 Pro Series Camshafts for Honda B-series VTEC engines are high-performance, CNC-ground billet cams featuring Fast Ramp technology, offering 15-25+ HP gains depending on the stage. Skunk2 Pro Series camshafts for Honda B-series VTEC engines are high-performance camshafts, CNC-machined from a single piece of metal, and feature Fast Ramp technology, providing a horsepower increase ranging from 15 to 25 horsepower or more, depending on the stage. Common specifications include: Valve clearance, and a RPM range between 1500 and 9800 RPM. For Pro 2+ models, a significant increase in peak power, specifically designed for modified engines.