Shimano ES300 68 x 121mm Octalink V2 Spline English Bottom Bracket ModelNumber=31711 Fits most rear-mount bike racks

Fits most rear-mount bike racks

5mm Crankset Weight 643g Primary Color Black Drivetrain Spacing Road Disc BB Inclusion No Interface 30mm Chainline 51mm

1 Flat Protection Sidewall ISO Width (mm) 53 ISO Diameter 622 / Road / 29"

Adapts the Thule Proride for use with plus sized and fat bike tires

Supple AX-a cord (Advanced Extra Alpha) combined the ZSG enables low rolling resistance

Shimano ES300 68 x 121mm Octalink V2 Spline English Bottom Bracket ModelNumber=31711 Fits most rear-mount bike racksShimano ES300 68 x 121mm 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 121 Defined Color Gray