• E*Thirteen
  • E*Thirteen
  • E*Thirteen
  • E*Thirteen
  • E*Thirteen
  • E*Thirteen
  • E*Thirteen
  • E*Thirteen
  • E*Thirteen
  • E*Thirteen
  • E*Thirteen
  • E*Thirteen
  • E*Thirteen
  • E*Thirteen
  • E*Thirteen
  • E*Thirteen
  • E*Thirteen
  • E*Thirteen
  • E*Thirteen
  • E*Thirteen
  • E*Thirteen
  • E*Thirteen
  • E*Thirteen
  • E*Thirteen
  • E*Thirteen
  • E*Thirteen
  • E*Thirteen
  • E*Thirteen
  • E*Thirteen
  • E*Thirteen
  • E*Thirteen
  • E*Thirteen
  • E*Thirteen
  • E*Thirteen
  • E*Thirteen
1 35

Helix Race e*spec Chainring

Helix Race e*spec Chainring

Starting at
£75.95 GBP
£75.95 GBP £75.95 GBP
Sale Sold out
Tax incl. Shipping policy Free Domestic Shipping at $100.00

CR5HRA-127

Motor
Color
Size
View full details

Save 35% 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, DJI 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 ebike.

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
DJI Avinox: 8mm offset for 55mm chainline
Color
Bosch 13mm: Black, Bronze, Eggplant, Naranja
Bosch 15mm: Black, Bronze, Sterling Silver
Shimano®: Black, Sterling Silver
Specialized®: Black, Sterling Silver
TQ® HPR50: Black, Sterling Silver
Fazua® Ride 60: Black, Sterling Silver
DJI Avinox: Black, Bronze, Sterling Silver
Compatibility
Bosch® Gen4/Gen5 CX, Bosch® Performance Line SX, Shimano® EP8, Specialized® Turbo Levo 2.1/2.2 and Kenevo/ Levo SL 1.1, TQ® HPR50, Fazua Ride 60, DJI Avinox
Features
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)
Material
Forged-CNC 7075 AL
Size
Bosch®: 32T, 34T, 36T (13mm offset only)
Shimano®: 32T, 34T
Specialized® Kenevo/ Levo SL 1.1: 32T
Specialized® Turbo Levo 2.1/2.2: 34T
TQ® HPR50: 32T, 34T
Fazua® Ride 60: 32T, 34T
DJI Avinox: 34T, 36T
Weight
Bosch®:
13mm offset: 32T: 99g / 34T: 107g
15mm offset: 32T: 108g / 34T: 114g (without rubber dust seal)
Shimano® EP8:
32T: 115g / 34T: 120g
Specialized® Turbo Levo 2.1/2.2:
34T: 128g
Specialized® Kenevo/ Levo SL 1.1:
32T: 107g
TQ® HPR50:
32T: 95g / 34T: 102g
Fazua® Ride 60:
32T: 111g / 34T: 117g
DJI Avinox:
34T: 102g / 36T: 109g

Frequently Asked Question
HOW-TO GUIDES FOR YOUR CHAINRING