e*thirteen expanded drivetrain possibilities for every rider with our original 9-50T Helix Race Cassette with 533% gear range. Our proprietary 9t sprocket and patented two-piece construction gave riders an unprecedented ability to build the drivetrain of their choice.

Now, we’ve built on that winning formula and added a 52T sprocket for an eye-watering 578% total range.

Love to grind climbs? Throw on a 28T chainring and go pull some stumps. Hungry for top speed? Push a big ring, comfortable in the knowledge that you’ve got the most gear range you can get from a single-ring, 12-speed setup.

Features
Widest range in the galaxy at 578%.
Compatible with SRAM®, Shimano® and TRP® shifters and derailleurs of the same gearing count and similar cage capacity (mounts on an XD driver only).
Two-piece forged/machined design provides ease of assembly and service while reducing waste.
Aluminum and steel clusters can be replaced separately to reduce service costs.
43–52T aluminum cluster backward compatible with 9–50T Helix Plus or Race cassettes.
Unique 9T high gear allows use of smaller chainrings for improved clearance and weight savings.
Available in five bright anodized or PVD color options.
Tested extensively for analog and e-bike use.

Specifications
Freehub Mount: XD™ and XDR™ drivers only
Material: 2 aluminum cogs, 10 steel cogs; PVD finishing on Intergalactic model improves durability and wear life
Range: 578%
Size: 9–52T (9, 11, 13, 15, 17, 20, 23, 27, 31, 36, 43, 52)
Speeds: 12-speed

Mfr Claimed Weight
404g