Splined bottom bracket for use with Shimano Octalink chainsets. Octalink splined axle/crank arm interface.
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
Shimano BB-ES300 Octalink Bottom Bracket - All Sizes 68 & 73mm
Shimano BB-6500 Ultegra OCTALINK Bottom Bracket BSA 68mm Sealed Cartridge JAPAN
Shimano BB-ES300 bottom bracket 68-113 mm - for bottom bracket mount front derailleur
