E13 Chainring OO CR5ERA-105 Helix R e*spec Ring | 34T | Bosch Gen4 Direct Mount | 53mm Chainline | Shimano/SRAM 11/12s Chain Compatible | Eggplant

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E13 Chainring OO CR5ERA-105 Helix R e*spec Ring | 34T | Bosch Gen4 Direct Mount | 53mm Chainline | Shimano/SRAM 11/12s Chain Compatible | Eggplant

Bosch - Helix Race e*spec Chainring
Helix Race e*spec Chainrings merge cutting-edge design and performance. Designed for Bosch equipped e-bikes, this 1pc direct mount chainring is forged from 7075 AL for lightweight durability, impressive stiffness, and a standout technical aesthetic. Its custom metal dust cover enhances style and minimizes seal and lockring contamination.

The new M4 narrow-wide profile delivers enhanced chain retention and cross-compatibility with Shimano, Sram, and TRP 11/12s drivetrains, including SRAM T-Type. It's available in a variety of colors for coordination with e*thirteen cranks, cassettes, stems, tubeless valves and more. The Bosch version is available with 13mm offset (53mm chainlne) and 15mm offset (55mm chainline) in 34T sizes.


Product Spec
Chainline
13mm offset for 53mm chainline
15mm offset for 55mm chainline
Color
13mm: Black, Bronze, Eggplant, Naranja
15mm: Black, Bronze, Sterling Silver
Compatibility
Bosch Gen4 CX Motor
Bosch Performance Line SX

T-Type Chain Compatible
Features
Lightweight, stiff, long wearlife, with technical aesthetics and enhanced chain retention. Cross compatibility with Shimano, Sram, and TRP 11/12s drivetrains.
Included
Integrated Aluminum Dust Cover (rubber seal is specific to Helix Race cranks and not included)
Material
Forged-CNC 7075 AL
Mount
Fits cranks on Bosch ISIS spindles
Pairs perfectly with e*thirteen Helix Race e*spec Alloy Cranks
Size
34T
Weight
34T:114g (without rubber dust seal)


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