Shimano ES300 68 x 121mm Octalink V2 Spline English Bottom Bracket CheckoutSpec= Front - 9x100mm Q/R - Blk Bottom flap provides a workspace

Bottom flap provides a workspace to keep your parts and tools out of the dirt when working on the ground

Perfect skiing sensations - the integrated heel-plate guideridge of the PROLINK SHIFT RACE maximizes power transfer and on-snow feeling

Ring Position/Type InnerRing Position/Type OuterTooth Count 46/33Drivetrain Speeds 12Round or Oval RoundChainring BCD SRAM Thread MountMaterial AluminumColor BlackDefined Color Black

SID DebonAir Spring Shaft

Shimano ES300 68 x 121mm Octalink V2 Spline English Bottom Bracket CheckoutSpec= Front - 9x100mm Q/R - Blk Bottom flap provides a workspaceShimano BB ES300 Octalink V2 Bottom BracketsFits Shimano Octalink V2 Spline Cranksets Crankarm fixing bolts not included 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 121 Defined Color Gray Size 68Mm X 121Mm Interface English