The Schwalbe Marathon Efficiency is a state-of-the-art touring tire, that offers unmatched speed, durability, and puncture protection. Designed for e-bikes and traditional bicycles.
The right-side/rear shifter is 11-Speed, index-only, left-side/front is 2-Speed.
All bar-end road shifters produced after Nov 2008 have an I.D. spec fit range of 19-22mm.
