e*thirteen Helix Race Cassette - 12-Speed 9-52t Bronze. The e*thriteen Helix Race 12-speed 9-52t cassette is engineered to deliver precision shifting performance with an industry leading 578% gear range. The proprietary 9 tooth smallest cog combined with the 52t largest cog enables the use of a smaller chainring for improved clearance lighter system weight and a lower bail out gear ratio without high gear compromise.Seamless cross-compatibility with Shimano SRAM and TRP 12-speed drivetrains Patented 2-Part design provides strength stiffness light weight and ease of service Aluminum and steel clusters can be replaced separately to reduce service cost 9 tooth high gear allows use of smaller chainrings for clearance and weight savings Fits XD and XDR Drivers Only (Hope XD drivers are undersized at the clamp location and require a Cassette Shim Kit -Sold Separately) Tested extensively for analog and e-bike use
- TECH SPECS
| Cassette Body Type | SRAM XD 11/12 Speed |
| Cassette Body Type | SRAM XDR |
| Cassette Cogs | 9-11-13-15-17-20-23-27-31-36-43-52 |
| Color | Bronze |
| Defined Color | Brown |
| Defined Color | Silver |
| Designed for ebike | Yes |
| Drivetrain Speeds | 12 |
| Range | 9-52 |
| Weight | 392 |
