Features over twice as much friction surface area compared to your stock clutch. All Scorpion clutches provide positive engagement and release. The age-old problem of finding neutral is virtually eliminated and shifting through the gears becomes smoooth and precise. Steel spacers on the clutch pack ends eliminate wear on the aluminum surfaces. Scorpion billet clutches incorporates six heavy duty coil springs. In addition, an extra spring set with a different spring rate is included which allows the clutch to be turned from mild (street) to wild (race), depending on the usage. Tunability is easy without the removal of the primary cover. Barnett friction plates are compatible with any primary oil/dry friction compounds are also available. This kit is made to be used with the stock H-D clutch basket.