The Power Torque BB outboard cups install in a standard threaded bottom bracket shell - select BSC (English) or Italian threading. They install with a standard Park, Pedros, or Campagnolo outboard bottom bracket cup tool. There is a cartridge bearing in the left side cup while the bearing for the right side resides with the crank. Please note: the Power Torque cups are not compatible with Ultra Torque cranks.
The Power Torque system features a full length spindle fixed into the right crank arm. The splined left arm slides on to the splined spindle and is held in place with a 14mm hex (Allen) bolt. The right side sealed bearing is attached to the crank and the left side is installed in the Power Torque BB cup.