E*thirteen Helix R Guidering (52/55 Flip Flop) 30t - Gray CheckoutSpec= Turquoise Material : P 600D

Material : P 600D

}Surly Midnight Special Bike - 650b Steel Black 58cm

model Pro N-10/11 ring type inner mount 5x110mm teeth 36t oval/round round color black

0mm 178mm J-bend Silver Box of 100

E*thirteen Helix R Guidering (52/55 Flip Flop) 30t - Gray CheckoutSpec= Turquoise Material : P 600De*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*thirteen's 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