e*thirteen Helix R Aluminium Chainring

The lightweight e-spec chainrings made from high-alloy aluminium by e*thirteen for Bosch SX/CX Gen4 and Gen 5 drives with the Direct mount for these motors.

Upgrade your e-bike drive with Bosch e*spec Direct Mount chainrings. The M3 narrow-wide tooth profile reduces weight without compromising chain guidance.

e13 Helix R E-bike chainring specifications and dimensions:

• Boost chainline 55 mm
• Offset 15 mm, for 55 mm chainline on Bosch CX Gen4/SX and 57 mm on Bosch Gen 5
• Material: CNC-machined 7075 aluminium
• Direct mount for Bosch SX/CX Gen4 and Gen5 systems
• Revised M3 narrow-wide tooth profile for noise reduction and durability
• Compatible with 10/11/12-speed drivetrains from Shimano and SRAM
• High durability
• Colour: black
• Weight: 107 grams, manufacturer’s specification

The E13 Helix R e*spec chainrings combine cutting-edge design with top performance. Developed as an upgrade for the most common e-bike drivetrains, this one-piece direct-mount chainring is forged and milled from 7075 aluminium. It is characterised by low weight, durability, impressive stiffness and an outstanding technical look, and is available for Bosch CX Gen4/Gen5, Bosch SX, TQ HPR50, Fazua Ride 60, Shimano EP8, Avinox and Specialized SL1.1 and 2.1/2.2 motors. Thanks to its wear-resistant tooth profile and elegant design, the integrated chainring, in combination with the Helix Race Alloy e*spec cranks, is the ultimate upgrade for your e-bike.

Herstellerinformation: e*thirteen, Klosterstrasse 6, 83278 Traunstein, Germany, https://www.ethirteen.com