E*thirteen Helix R Guidering (52/55 Flip Flop) 32t - Gray color-black (machined sidewall) By placing lower modulus carbon

By placing lower modulus carbon in key areas to mitigate the brittleness of hi-mod fiber-the Caledonia delivers performance

Teal Thickness 12 S

EVOL air spring optimized for linearity and top-out performance

3-18mm taper)

E*thirteen Helix R Guidering (52/55 Flip Flop) 32t - Gray color-black (machined sidewall) By placing lower modulus carbone*thirteen Helix R Guidering 32t 11 12 Speed 52 55mm Flip Flop CL 3 5mm Offset e*thirteen DM Gray. Helix R Direct Mount rings are designed to function equally well with all 11 and 12 speed SRAM and Shimano drivetrain systems on e*thirteen Helix or legacy TRS LG1 XCX cranks. e*thirteens Gen 4 narrow wide tooth profile delivers upgraded chain retention lower system noise and increased wear life Cross Compatible with SRAM and Shimano 11 and 12 speed