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e*thirteen Helix Race Cassette - 12-Speed 13-52t Gray. The e*thirteen Helix Race 12-speed 13-52t cassette features close ratio gearing specifically engineered for steep terrain where climbing time and shift frequency is high and descents are gravity driven. By placing more gears where riders spend the majority of the time they can optimize cadence and torque for improved climbing efficiency with smoother shifts under load for both analog and eBikes.Close ratio gearing cassette for improved shifts under load
Lower fatigue and extended range (Bio or Battery) with sweet spot cadence for maximum efficiency
Seamless cross-compatibility with Shimano SRAM and TRP 12-speed drivetrains
Patented 2-Part design provides strength stiffness light weight and ease of service
Tested extensively for analog and e-bike use
Fits XDβ’ and XDRβ’ Drivers Only
- TECH SPECS
| Cassette Body Type | SRAM XD 11/12 Speed |
| Cassette Body Type | SRAM XDR |
| Cassette Cogs | 13-15-17-19-22-25-28-32-36-40-45-52 |
| Color | Gray |
| Defined Color | Gray |
| Defined Color | Silver |
| Designed for ebike | Yes |
| Drivetrain Speeds | 12 |
| Range | 13-52 |
| Weight | 467 |
