E-Thirteen Helix R Guidering (52/55 Flip Flop) 30t – Bronze

e*thirteen Helix R Guidering – 30t 11/12-Speed 52/55mm Flip Flop CL 3/5mm Offset e*thirteen DM Bronze. 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 chains

Convenient flip-flop design compatible with both Boost and SuperBoost chainlines (52/55mm)

Pair seamlessly with Helix and Helix R cranks or with legacy TRS/LG1/XCX cranks using included 1mm spacer ring

e*thirteens Quick Connect direct mount interface keeps the system secure and creak-free

Forged from 7075-T7 aluminum then extensively CNC optimized for light weight and technical aesthetics

Tough enough for any MTB discipline

• TECH SPECS