Skunk2 Pro-Series 88-01 Honda B-Series/H23 DOHC 1.6/1.7/1.8/2.0/2.3L Cam Gears (Black Series)An engine'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 Hondas 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