Dual Disc – (650HP & 1300 Ft-Lbs.) With Spring Hub The Street Dual Disc offers more holding power and a wider range of use over a single disc clutch, while retaining similar driving characteristics. With a 3800lb diaphragm style pressure plate quick shifts are still possible while pedal pressure will be just over stock. Ceramic The Ceramic Street Dual Disc is best suited for daily driven trucks that have performance modifications up to 650HP that do see some racing or hard use. Light towing is possible; clutch engagement will be somewhat aggressive but tolerable.