Big-Twin Clutch Components

1941-1984 Big-Twin. Kit Includes 5 race proven material friction plates with tempered steel cores. Maximum groove pattern for excellent (read more)

1941-1984 Big-Twin. Kit Includes 5 race proven material friction plates with tempered steel cores. Maximum groove pattern for excellent heat dissipation & oil circulation (run wet or dry). Steel plates not included! Works great with BTS-5. (hide)

1941-1984 Big-Twin. Includes 5 race proven material friction plates (6061 T6 aluminum core) with maximum depth groove pattern for (read more)

1941-1984 Big-Twin. Includes 5 race proven material friction plates (6061 T6 aluminum core) with maximum depth groove pattern for efficient heat dissipation, and oil circulation. Included are 4 tempered steel drive plates. Clutch pack height is pre-set for easy installation (run wet or dry). (hide)

1941-1984 Big-Twin. Tempered steel drive plate. Works great with BT-5 econo plate kit described above. 1941-1967 applications require (read more)

1941-1984 Big-Twin. Tempered steel drive plate. Works great with BT-5 econo plate kit described above. 1941-1967 applications require 3 steel plates, 1968-1984 requires 4 steel drive plates. Steel drive plates sold individually. (hide)

1968-1984 Big-Twin. A complete set of 10 coil type clutch springs. Zero collapse giving 50 pounds pressure @ 1.125 inch spring height. (read more)

1968-1984 Big-Twin. A complete set of 10 coil type clutch springs. Zero collapse giving 50 pounds pressure @ 1.125 inch spring height. Perfect for stock replacement. (hide)

1984-1989 Big-Twin. Includes 6 race proven material friction plates with tempered steel cores & 7 tempered steel drive plates. 25% (read more)

1984-1989 Big-Twin. Includes 6 race proven material friction plates with tempered steel cores & 7 tempered steel drive plates. 25% wider than OEM clutch plates for a significant increase in clutch area. Stack height is pre-set for easy installation (run wet or dry). 25% WIDER THAN STOCK for maximum holding power. (hide)