Shimano ES300 68 x 126mm Octalink V2 Spline English Bottom Bracket Color-Matte Blue It features HYPERDRIVE technology and

It features HYPERDRIVE technology and SG-X chainrings for precise reliable shifting

Run time on High Steady = 4 hrs

Bolts are secured with ball bearings preventing a tool from being inserted for removal

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Color Gray Links (links) 116 Drivetrain Speeds 10 Half Link Chain No Chain Connection Type Single Use Missing Link Defined Color Gray

Shimano ES300 68 x 126mm Octalink V2 Spline English Bottom Bracket Color-Matte Blue It features HYPERDRIVE technology andShimano ES300 68 x 126mm Octalink V2 Spline English Bottom Bracket. Shimano BB ES300 Octalink V2 Bottom BracketsFits Shimano Octalink V2 Spline Cranksets Crankarm fixing bolts not included TECH SPECS Bottom Bracket Shell I. D. 1. 37 BB Frame Interface English BB Shell Width (mm) 68 Weight 270 Spindle Interface Type Shimano Octalink V2 Spindle Length 126 Defined Color Gray