The Shimano TL-FC40 crank tool is required for the Dura-Ace and Ultegra power meter cranks. It is used to assemble and disassemble the left crank arm. The special tool is made of composite material and has several grooves, which help with the use of the installation ring and the cable bushing.
The Shimano TL-FC40 crank tool is required for the Dura-Ace and Ultegra power meter cranks. It is used to assemble and disassemble the left crank arm. The special tool is made of composite material and has several grooves, which help with the use of the installation ring and the cable bushing.