KraftWerks Honda D-Series Race Supercharger Kit (C30-94)The D Series Race Kit is based off of the impressive Rotrex C30 94 supercharger. The D Series Race Kit produces impressive results throughout the entire power band due to its patented traction drive technology. And, unlike any other forced induction system, this kit provides a linear power curve, torque on demand, cooler operating temperatures. The D Series Race Kit provides instant throttle response and a progressive power curve that increases all