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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
| Chainline/Hub Compatibility | 141/148 Boost Hubs |
| Chainline/Hub Compatibility | 157 Super Boost Hubs |
| Color | Bronze |
| Defined Color | Brown |
| Direct Mount Type | Direct Mount e*Thirteen |
| Drivetrain Speeds | 10 |
| Drivetrain Speeds | 11 |
| Drivetrain Speeds | 12 |
| Material | Aluminum |
| Offset | Flip-Flop 0/5 |
| Ring Position/Type | Chain Retaining Single Ring |
| Round or Oval | Round |
| Tooth Count | 30 |
