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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"}}]
Save up to 53% on Bosch® 13mm Eggplant and Naranja rings while supplies last!
Helix R e*spec Chainrings merge cutting-edge design and performance. Designed as an upgrade for the most popular e-bike motor systems, this 1-piece direct mount chainring is forged and machined from 7075 AL. Boasting lightweight, durability, impressive stiffness, and a standout technical aesthetic, they're available for Bosch CX Gen4/Gen5, Bosch SX, TQ HPR50, Fazua Ride 60, Shimano EP8, Avinox, as well as Specialized SL1.1 and 2.1/2.2 motors.
With a long-wearing tooth profile and refined aesthetic, the integrated look, when paired with Helix Race Alloy e*spec cranks, is the ultimate upgrade to your e-bike.
The new M4 narrow-wide profile delivers enhanced chain retention and cross-compatibility with Shimano®, Sram®, and TRP® 11/12s drivetrain, including SRAM® T-Type®. It's available in a variety of Specialized® colors for coordination with e*thirteen cranks, cassettes, stems, tubeless valves, and more.
Bosch rings are offered in two offset options:
13mm for 53mm chainline on CX Gen4/SX and 55mm chainline on CX Gen5 bikes
15mm offset for 55mm chainline on CX Gen4/SX, and 57mm chainline on CX Gen5
Chainline
Bosch®: 13mm offset for 53mm chainline on CX Gen4/SX and 55mm chainline on CX Gen5
Bosch®: 15mm offset for 55mm chainline on CX Gen4/SX, and 57mm chainline on CX Gen5
Shimano®: 21.5mm offset for 55mm chainline
Specialized® Kenevo/Levo SL 1.1: -4mm offset for 52mm chainline
Specialized® Turbo Levo 2.1/2.2: 9mm offset for 52mm chainline
TQ® HPR50: 12mm offset for 55mm chainline
Fazua® Ride 60: 18mm offset for 55mm chainline
Avinox: 8mm offset for 55mm chainline
Lightweight, stiff, long wearlife, with technical aesthetics and enhanced chain retention. Cross-compatibility with Shimano®, Sram®, and TRP® 11/12s drivetrains.
Included
Bosch® rings only: Integrated Aluminum Dust Cover (rubber seal is specific to Helix Race cranks and not included)
