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
BB-ES25 SHIMANO OCTALINK BOTTOM BRACKET CASSETTE 113mm 68mm SEALED CARTRIDGE
