e*thirteen Helix R Guidering - 30t 11/12-Speed 52/55mm Flip Flop CL 3/5mm Offset e*thirteen DM Gray Bearing I.D. (mm)-17 }Topeak E-Xplorer Trunk Bag -

}Topeak E-Xplorer Trunk Bag - With MTX QuickTrack 2 Mount - 26L Black

Snap the magnet on the side for quick

Shimano BB-5500 Octalink V1 Bottom BracketsFits Shimano Octalink V1 Spline Cranksets FC-7700/FC-7703/FC-6500/FC-6503/FC-5500/FC-5501/FC-5503/FC-5504 cranks

35mm 157g & 50mm 173g

e*thirteen Helix R Guidering - 30t 11/12-Speed 52/55mm Flip Flop CL 3/5mm Offset e*thirteen DM Gray Bearing I.D. (mm)-17 }Topeak E-Xplorer Trunk Bag -e*thirteen Helix R Guidering 30t 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