[{"id":686518468978,"handle":"all-products","title":"All Products","updated_at":"2025-12-12T04:06:22-08:00","body_html":"","published_at":"2025-12-04T17:17:42-08:00","sort_order":"best-selling","template_suffix":"","disjunctive":false,"rules":[{"column":"variant_price","relation":"greater_than","condition":"0"},{"column":"variant_inventory","relation":"greater_than","condition":"0"}],"published_scope":"global"},{"id":686518567282,"handle":"best-sellers","title":"Best Sellers","updated_at":"2025-12-12T04:06:22-08:00","body_html":"","published_at":"2025-12-04T17:22:56-08:00","sort_order":"best-selling","template_suffix":"","disjunctive":false,"rules":[{"column":"variant_inventory","relation":"greater_than","condition":"0"},{"column":"tag","relation":"not_equals","condition":"service parts"}],"published_scope":"global"},{"id":686708490610,"handle":"crankmas","updated_at":"2025-12-12T14:44:22-08:00","published_at":"2025-12-12T09:14:48-08:00","sort_order":"manual","template_suffix":"deals-collection","published_scope":"global","title":"Crankmas","body_html":"\u003cp\u003eWelcome to Crankmas: December 12–16. \u003cstrong\u003eUse code CRANKMAS\u003c\/strong\u003e for 30% off cranks and more. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThis code applies to full-price items listed below, or sale items with less than a 30% discount\u003c\/strong\u003e. Other select drivetrain components and pedals are discounted by up to 65%.\u003c\/p\u003e\n\u003cp\u003eDecember 16th is the order deadline for guaranteed delivery before Christmas.\u003c\/p\u003e"},{"id":685866713458,"handle":"deals","title":"Deals","updated_at":"2025-12-12T04:06:22-08:00","body_html":"Score deals up to 75% off on select e*thirteen MTB components on sale. Stock is limited. Grab what you need before it's gone.","published_at":"2025-11-20T10:23:48-08:00","sort_order":"manual","template_suffix":"deals-collection","disjunctive":false,"rules":[{"column":"tag","relation":"equals","condition":"clearance"},{"column":"tag","relation":"equals","condition":"b2c"}],"published_scope":"global"},{"id":622820000114,"handle":"emtb-cassettes","title":"E-MTB Cassettes","updated_at":"2025-12-12T04:06:22-08:00","body_html":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eBuilt to handle the demands of motor-assisted riding. Every Helix and TRS cassette is tested extensively for E-MTB use, delivering the durability and shift performance you need when watts are high and terrain is steep. With up to 578% gear range and drop-in compatibility with SRAM®, Shimano®, and TRP® drivetrains, you're free to build the setup that fits your ride style. Need close-ratio gearing optimized for assist cutoff? The 13-52T has you covered. Want maximum range for all-day adventures? The 9-52T delivers. Two-piece serviceable design across the line keeps long-term costs down.\u003c\/p\u003e","published_at":"2025-05-28T20:29:57-07:00","sort_order":"manual","template_suffix":"cassettes-collection","disjunctive":false,"rules":[{"column":"tag","relation":"equals","condition":"cassette"},{"column":"tag","relation":"equals","condition":"e*spec"},{"column":"tag","relation":"equals","condition":"component"}],"published_scope":"global","image":{"created_at":"2025-05-28T20:31:27-07:00","alt":null,"width":2054,"height":2054,"src":"\/\/www.ethirteen.com\/cdn\/shop\/collections\/FW2HRA-123-5_0f434ab4-c82d-4d15-832f-eec9eb4189c5.jpg?v=1748489487"}},{"id":686513815922,"handle":"gravel-bike-cassettes","title":"Gravel Cassettes","updated_at":"2025-12-12T04:06:22-08:00","body_html":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eBorn from our legendary MTB Helix line, our gravel bike cassettes deliver wide-range gearing and buttery shift performance. Compatible with SRAM®, Shimano®, and TRP® drivetrains, they're a true drop-in upgrade that extends your range without compromising shift quality. Whether you're chasing KOMs on fire roads or grinding through all-day mixed terrain, Helix cassettes give you the gears to go further and climb steeper.\u003c\/p\u003e","published_at":"2025-12-04T13:49:34-08:00","sort_order":"manual","template_suffix":"cassettes-collection","disjunctive":false,"rules":[{"column":"tag","relation":"equals","condition":"cassette"},{"column":"tag","relation":"equals","condition":"Gravel"},{"column":"tag","relation":"equals","condition":"component"}],"published_scope":"global","image":{"created_at":"2025-12-04T14:11:10-08:00","alt":null,"width":1313,"height":1313,"src":"\/\/www.ethirteen.com\/cdn\/shop\/collections\/FW2HRA-100-stylized-web.jpg?v=1764886270"}},{"id":621467074930,"handle":"mtb-cassettes","title":"MTB Cassettes","updated_at":"2025-12-12T04:06:22-08:00","body_html":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eMore range. More compatibility. More choice. 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At e*thirteen, we're always striving to bring something new to the table. That's why we created the Helix cassette line – to offer unparalleled cross-compatibility without sacrificing performance.
As e-bikes have become more popular, we set out to engineer a close-ratio cassette specifically for them. Enter the Helix Race 13-52T - a 12-speed close-ratio cassette specifically engineered for steep terrain where climbing speeds are high and descents are gravity-powered.
The 13T, combined with a 32T chainring, at 85rpm cadence, will deliver speeds at or just above 32kmph/20mph, just beyond the speed-limited assistance of most e-bikes. The 52T lowest gear and closer steps help riders clean the most technical climbs with newfound ease.
While the Helix R 13-52T was conceived for e-bikes, it also improves the ride experience for non-e-bike riders, allowing all riders to optimize cadence on steep climbs and let gravity do the work on descents.
Like all e*thirteen Helix cassettes, the Helix Race 13-52t delivers seamless compatibility with SRAM®, Shimano®, and TRP® Shifters and Derailleurs of the same gearing count and similar cage capacity. (Mounts on an XD driver only)
Experience the advantages of a close-ratio cassette on your next ride with the Helix Race 13-52T.
Helix Race 13-15-17-19-22-25-28-32-36-40-45-52 vs Eagle™ 10-12-14-16-18-21-24-28-32-38-44-52
Aluminum and Steel clusters can be replaced separately to reduce service cost
Patented two-piece aluminum/steel construction for strength, stiffness, lightweight, and durability
*No additional discounts apply.
Compatibility
Compatible with SRAM®, Shimano®, and TRP® Shifters and Derailleurs of the same gearing count and similar cage capacity. Please see the following article for important information when using our cassette on Shimano drivetrains: https://support.ethirteen.com/hc/en-us/articles/31941918361755-Important-info-about-cassette-compatibility-with-Shimano-Drivetrains
Please get in touch with us if you have specific questions about compatibility with your drivetrain.
Freehub Mount
XD™ and XDR™ Drivers Only
Material
2 aluminum cogs, 10 steel cogs. PVD finishing on Intergalactic model improves durability and wear life.
