Shimano Dura-Ace R9100 Hollowtech II Italian Bottom Bracket Model=Service Course SL-70 Handlebars knurling at the rear end

knurling at the rear end for manageability during manual use and is constructed from chrome-vanadium

Ultra-narrow profile improves aerodynamics keeps loads closer to center and greatly reduces bag `swing`

160mm rotors CRANKS: RADIO "ZUMA" 3pc crank

teeth 20t color blue

A modern stem designed specifically for larger BMX racers

Shimano Dura-Ace R9100 Hollowtech II Italian Bottom Bracket Model=Service Course SL-70 Handlebars knurling at the rear endShimano Dura Ace BB92 BB9000 Hollowtech II Bottom Brackets Bottom Bracket Shell I. D. 36 BB Frame Interface Italian BB Shell Width (mm) 70 Weight 65 Spindle Interface Type Shimano Hollowtech II Defined Color Black Type Italian