Splined bottom bracket for use with Shimano Octalink chainsets. Octalink splined axle/crank arm interface.
Shimano 105 Octalink Bottom Bracket 68 x 109.5mm 5500 BS Threaded Bike BB
Shimano 105 Octalink Bottom Bracket 68 x 118.5mm 5500 BS Threaded Bike BB
Shimano 105 BB-5500 Octalink Bottom Bracket - BSA Thread
Shimano BB-ES300 Octalink Bottom Bracket - 68mm
Shimano BB-ES300 Octalink Bottom Bracket - All Sizes 68 & 73mm
