Shimano ES300 E-Type Octalink V2 English Bottom Bracket, 68mm x 126mm Black/Grey
Shimano ES300 Octalink V2 English Threaded Bottom Bracket. Designed for HollowTech Octalink V2 cranksets. Spindle Length Options113mm, 118mm, 121mm, or 126mm depending on variant. Available for 68mm and 73mm bottom bracket shell widths.