[{"id":139176771687,"handle":"all-chainrings","title":"All - Chainrings","updated_at":"2025-12-12T04:06:22-08:00","body_html":"","published_at":"2019-08-07T20:23:19-07:00","sort_order":"alpha-asc","template_suffix":"","disjunctive":false,"rules":[{"column":"tag","relation":"equals","condition":"chainring"}],"published_scope":"global"},{"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":621466911090,"handle":"e-spec-chainrings","title":"E-MTB Chainrings","updated_at":"2025-12-12T04:06:22-08:00","body_html":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003eE-MTB chainrings engineered for the motors that power your ride. Every e*spec chainring features our M4 narrow-wide tooth profile for superior chain retention and cross-compatibility with Shimano®, SRAM®, and TRP® drivetrains including T-type®. From forged 7075 aluminum Helix Race rings to durable steel Helix Core options, there's a chainring for every motor and every budget. Wide compatibility covers Bosch®, TQ®, Fazua®, Shimano® EP8, Avinox®, and Specialized® systems. Need extra protection for compact motors? The Turbocharger integrates a spider, bashguard, and chainring to defend your drivetrain from impacts.\u003c\/p\u003e","published_at":"2025-04-15T19:53:43-07:00","sort_order":"manual","template_suffix":"emtb-chainrings-collect","disjunctive":false,"rules":[{"column":"tag","relation":"equals","condition":"chainring"},{"column":"tag","relation":"equals","condition":"e*spec"},{"column":"tag","relation":"equals","condition":"component"}],"published_scope":"global","image":{"created_at":"2025-04-15T20:51:05-07:00","alt":null,"width":1956,"height":1956,"src":"\/\/www.ethirteen.com\/cdn\/shop\/collections\/CR5ERA-101-group2.jpg?v=1744775465"}},{"id":138413178983,"handle":"service-parts","title":"Service Parts","updated_at":"2025-12-12T04:06:22-08:00","body_html":"\u003cp\u003eFind high-quality replacement parts for your e*thirteen cycling gear. Maintain peak performance with durable, precision-engineered components.\u003c\/p\u003e","published_at":"2019-07-28T21:01:03-07:00","sort_order":"best-selling","template_suffix":"service-2","disjunctive":false,"rules":[{"column":"tag","relation":"equals","condition":"service parts"}],"published_scope":"global","image":{"created_at":"2020-05-29T12:09:09-07:00","alt":null,"width":2048,"height":2048,"src":"\/\/www.ethirteen.com\/cdn\/shop\/collections\/service-parts.jpg?v=1590779350"}}]
Helix Core e*spec Direct Mount Chainrings feature our narrow-wide tooth profile, for reliable chain retention and an extra long wear life. Helix Core e*spec rings are cold-formed from steel and then heat-treated to provide excellent durability and toughness, all at a price that's easy on your wallet.
Long-lasting and economical steel construction
M4 narrow-wide tooth profile for excellent chain retention and Shimano®/Sram® drivetrain compatibility
Compatible with Sram® T-type® chains
Chainline
Bosch®: 53/55mm options with included spacer
TQ®: 55mm
Shimano®: 55mm
Color
Black
Compatibility
Bosch® SX / Gen4 CX, TQ® HPR50, Shimano EP8®
Material
4040 Steel
Size
Bosch®: 34T, 36T
TQ®: 32T
Shimano®: 32T
Weight
Bosch®: 189g
TQ®: 94g
Shimano®: 113g
Collapsible content
Helix Core e*spec Chainring
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