Shimano ES300 73 x 126mm Octalink V2 Spline English Bottom Bracket CheckoutSpec= 500 lb 5mm deep with reinforced spoke

5mm deep with reinforced spoke face and eyelets

Like all ISM saddles the PN 3

Special chemical surface etching applied to center tread creates fine surface texture that enhance traction on wider variety of track surfaces

Carbon black

Shimano ES300 73 x 126mm Octalink V2 Spline English Bottom Bracket CheckoutSpec= 500 lb 5mm deep with reinforced spokeShimano 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) 73 Weight 270 Spindle Interface Type Shimano Octalink V2 Spindle Length 126 Defined Color Black Size 73Mm X 126Mm Interface English