ethirteen Helix Race 12-Speed 9-52T Cassette

ethirteen Helix Race 12-Speed 9-52T Cassette Info

The Helix Race 12-Speed 9-52T Cassette represents the evolution of a proven design that has long pushed the boundaries of what a modern drivetrain can do. Ethirteen set out to create a cassette that delivers maximum range, dependable shifting, and long-term serviceability — and this latest Helix Race model answers that brief with authority. Riders looking to expand their bike’s capabilities, whether for steep backcountry climbs or blistering fast descents, will immediately appreciate how seamlessly this cassette enhances a 1x setup.

Building on the brand’s successful two-piece architecture, the Helix Race cassette combines a lightweight aluminum upper cluster with a durable steel lower section, giving riders the best of both worlds: optimized performance with real-world longevity. The addition of a 52T sprocket expands the range to an impressive 578%, making steep climbs more approachable without compromising the top-end speed that defines modern trail and enduro riding.

Ethirteen’s trademark 9T small cog remains one of its standout advantages, enabling use of smaller chainrings for improved clearance, reduced weight, and a more responsive pedaling feel. For riders swapping between analog and e-bike platforms, the Helix Race cassette remains a consistent, high-performance solution that has been thoroughly tested for both disciplines.

Helix Race Cassette Specs at a Glance

• Total Gear Range: 578% for unmatched climbing and speed capability.
• Compatibility: Works with SRAM, Shimano, and TRP 12-speed shifters/derailleurs when cage capacity matches.
• Driver Type: Requires an XD driver (note: Hope XD drivers require a shim kit).
• Construction: Two-piece forged/machined design for easier service and reduced waste.
• Serviceability: Aluminum and steel clusters can be replaced separately to lower maintenance cost.
• Backwards Compatibility: Aluminum 43–52T cluster fits 9-50T Helix Plus and Race cassettes.
• Color Options: Available in multiple anodized and PVD finishes.
• 9T Small Cog: Allows smaller chainrings for clearance benefits and weight savings.
• Usage: Extensively tested for both traditional and e-bike drivetrains.

Why Riders Choose the Helix Race

1. Unmatched Range: The 9-52T spread offers one of the widest gear ranges available for a 12-speed system, enabling more confident gear selection across varied terrain.
2. Smart Modularity: Replace only the worn portion of the cassette, saving long-term cost and reducing waste.
3. Cross-Brand Compatibility: Designed to integrate seamlessly with the most common 12-speed systems.
4. Color Personalization: Bright, durable finishes let riders match or contrast their build.

Final Take

The Helix Race cassette is built for riders who demand broad gearing, dependable construction, and the flexibility to maintain their drivetrain on their own terms. Whether you're chasing steeper climbs, higher speeds, or a more finely tuned setup, this cassette delivers a premium upgrade with tangible performance benefits.