An engineâ€™s camshafts must be set at their proper positions relative to the crankshaft in order to maximize horsepower. Black Series Pro Series Cam Gears for Honda's B-series and H23A1 engines enable serious tuners to optimize horsepower and torque by being able to adjust camshaft timing +/- 10 degrees, in one-degree increments, allowing them to tailor the power curve appropriately. Thanks to laser-etched timing and directional marks, precise camshaft adjustments can be made quickly and easily. Pro Series Cam Gears feature precision-machined, hard-anodized teeth to reduce premature wear with a signature, six-bolt design that eliminates gear slipping. Skunk2â€™s lightweight design (35 percent lighter than OEM) and CNC-machined, 7075-T6 billet aluminum construction reduces rotational inertia, resulting in increased engine response and acceleration. Skunk2â€™s adjustable cam gears have also been proven on race cars in the most extreme conditions for more than a decade.