e*thirteen spared no expense creating the Helix R e*spec Chainring. Designed for Bosch Gen 4 e-bikes, this 1pc direct mount chainring is forged from 7075 AL for stiffness, strength and the longest wear life. The extensive CNC machining and M3 tooth profile delivers an ultra lightweight upgrade chainring that offers the best cross compatible Shimano/SRAM chain retention and eye-catching technical aesthetics. A custom outer dust cover enhances the integrated style and helps to prevent
- Lightweight, stiff, long wearlife, with technical aesthetics and enhanced chain retention. Cross compatibility with Shimano, Sram, and TRP 11/12s drivetrains.
- Included: Custom integrated Dust Cover
- Material: Forged-CNC 7075 AL
- Mount: Direct Mount on E*thirteen Helix Race E*spec Alloy Cranks
- Size: 32T, 34T
- Weight: 32T: 103g, 34T:111g (without rubber dust seal)
Occasionally, without notice, manufacturers change product design and/or specifications.








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