e13 converter 13mm directmount to BOSCH GEN4/GEN5/SX

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

Possibility to order also:

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 ColorBosch 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

Avinox: Black, Bronze, Sterling Silver

CompatibilityBosch® 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, AvinoxFeaturesLightweight, stiff, long wearlife, with technical aesthetics and enhanced chain retention. Cross-compatibility with Shimano®, Sram®, and TRP® 11/12s drivetrains.IncludedBosch® rings only: Integrated Aluminum Dust Cover (rubber seal is specific to Helix Race cranks and not included)MaterialForged-CNC 7075 ALSizeBosch®: 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

Avinox: 34T, 36TWeightBosch®:

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

Avinox:

34T: 102g / 36T: 109g