Chainring e*spec Aluminum Direct Mount | 34T | Brose S Mag | Black (CR4UPA-103) (CTN10)

e*thirteen e*Bike Chainrings (for bicycle chainrings, click here)

Available in a wide range of options to suit mosts needs.

Helix Race eBike chainrings
 LIGHTER WEIGHT. LONGER WEAR LIFE.
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 32T and 34T sizes, it supports dropping a chainring size to take full advantage of e*thirteen’s proprietary 9T smallest cog, wide range cassettes.

PRODUCT SPEC
Chainline
13mm offset for 53mm chainline
15mm offset for 55mm chainline

Colour
13mm: Black, Bronze, Eggplant, Naranja
15mm: Black, Bronze, 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 - 32T, 34T

Weight
13mm offset: 32T: 99g
34T:107g

15mm offset: 32T: 108g
34T:114g (without rubber dust seal)

e*spec Direct Mount Aluminium
Our new direct mount e*spec chainrings use our new M3 narrow-wide tooth profile, which reduces weight without sacrificing chain-retention. In making our SL and UL chainrings lighter and more beautiful than their predecessors, we adapted a similar design to work with Bosch, Brose, and Shimano motor configurations.

Fits - 52mm or 53mm (Boost chainline)
Compatibility - Bosch™, Brose™, Shimano™ & Fazua™
Options - 32t (Shimano only), 34t, 36t, 38t

e*spec Direct Mount steel

Our steel direct mount rings provide great performance and long life at a killer price for todays high-performance e-bikes.

Fits - 52mm or 53mm (Boost chainline)
Compatibility - Bosch™
Options - 34t, 36t, 38t

Helix Race e*spec | Chainring | 32T | Bosch Gen4 Direct Mount | 53mm Chainline | Shimano/SRAM 11/12s Chain | Black (CR5ERA-100) (CTN10)
Helix Race e*spec | Chainring | 34T | Bosch Gen4 Direct Mount | 53mm Chainline | Shimano/SRAM 11/12s Chain | Black (CR5ERA-101) (CTN10)
Helix Race e*spec | Chainring | 32T | Bosch Gen4 Direct Mount | 53mm Chainline | Shimano/SRAM 11/12s Chain | Bronze (CR5ERA-102) (CTN10)
Helix Race e*spec | Chainring | 34T | Bosch Gen4 Direct Mount | 53mm Chainline | Shimano/SRAM 11/12s Chain | Bronze (CR5ERA-103) (CTN10)
Helix Race e*spec | Chainring | 32T | Bosch Gen4 Direct Mount | 53mm Chainline | Shimano/SRAM 11/12s Chain | Eggplant (CR5ERA-104) (CTN10)
Helix Race e*spec | Chainring | 32T | Bosch Gen4 Direct Mount | 53mm Chainline | Shimano/SRAM 11/12s Chain | Naranja (CR5ERA-106) (CTN10)
Helix Core e*spec | Chainring | 34T | Bosch SX / Gen4 CX | steel | 53/55mm Chainline | 15.5mm / 13.5mm Offset | Black (CR5ESA-100) (CTN10)
Helix Core e*spec | Chainring | 36T | Bosch SX / Steel /Gen4 CX Direct Mount | 53/55mm Chainline | 15.5mm / 13.5mm Offset | Black (CR5ESA-101) (CTN10)
Helix Race e*spec | Chainring | 32T | Bosch SX / Gen4 CX Direct Mount | 15mm Offset | Shimano/SRAM 11/12s Chain Compat | Black(CR5HRA-100) (CTN10)
Helix Race e*spec | Chainring | 34T | Bosch SX / Gen4 CX Direct Mount | 15mm Offset | Shimano/SRAM 11/12s Chain Compat | Black(CR5HRA-101) (CTN10)
Helix Race e*spec | Chainring | 32T | Fazua Ride 60 Direct Mount | 18mm Offset | Shimano/SRAM 11/12s Chain Compatible | Black (CR5HRA-104) (CTN10)
Helix Race e*spec | Chainring | 34T | Fazua Ride 60 Direct Mount | 18mm Offset | Shimano/SRAM 11/12s Chain Compatible | Black (CR5HRA-105) (CTN10)
Helix Race e*spec | Chainring | 32T | TQ HPR50 Direct Mount | 12mm Offset | Shimano/SRAM 11/12s Chain Compatible | Black (CR5HRA-108) (CTN10)
Helix Race e*spec | Chainring | 34T | TQ HPR50 Direct Mount | 12mm Offset | Shimano/SRAM 11/12s Chain Compatible | Black (CR5HRA-109) (CTN10)
Helix Race e*spec | Chainring | 32T | Shimano EP8 Direct Mount | 21mm Offset | Shimano/SRAM 11/12s Chain Compatible | Black (CR5HRA-112) (CTN10)
Helix Race e*spec | Chainring | 34T | Shimano EP8 Direct Mount | 21mm Offset | Shimano/SRAM 11/12s Chain Compatible | Black (CR5HRA-113) (CTN10)
Helix Race e*spec | Chainring | 32T | Kenevo/Levo SL 1.1 | -4mm offset | Shimano/SRAM 11/12s Chain Compatible | Black (CR5HRA-122) (CTN10)
Helix Race e*spec | Chainring | 34T | Turbo Levo 2.1/2.2 | 9mm offset | Shimano/SRAM 11/12s Chain Compatible | Black (CR5HRA-124) (CTN10)
Chainring e*spec Aluminum Direct Mount | 34T | Bosch CX Gen4 | Black (CR4UPA-100) (CTN10)
Chainring e*spec Steel Direct Mount | 34T | Bosch CX Gen4 | Black (ZCR4USA-100) (CTN10)
Chainring e*spec Steel Direct Mount | 36T | Bosch CX Gen4 | Black (ZCR4USA-101) (CTN10)
Chainring e*spec Aluminum Direct Mount | 38T | Bosch CX Gen4 | Black (CR4UPA-102) (CTN10)
Chainring e*spec Steel Direct Mount | 38T | Bosch CX Gen4 | Black (CR4USA-102) (CTN10)
Chainring e*spec Aluminum Direct Mount | 34T | Brose S Mag | Black (CR4UPA-103) (CTN10)
Chainring e*spec Aluminum Direct Mount | 36T | Brose S Mag | Black (CR4UPA-104) (CTN10)
Chainring e*spec Aluminum Direct Mount | 38T | Brose S Mag | Black (CR4UPA-105) (CTN10)
Chainring e*spec Aluminum Direct Mount | 32T | Shimano E8000 | Black (CR4UPA-109) (CTN10)
Chainring e*spec Aluminum Direct Mount | 34T | Shimano E8000 | Black (CR4UPA-106) (CTN10)
Chainring e*spec Aluminum Direct Mount | 36T | Shimano E8000 | Black (CR4UPA-108) (CTN10)
Chainring e*spec Aluminum Direct Mount | 38T | Shimano E8000 | Black (CR4UPA-107) (CTN10)
Chainring e*spec Aluminum Direct Mount | 32 | TQ Drive | Black (CR4EPA-102) (CTN10)
Chainring e*spec Aluminum Direct Mount | 34T | TQ Drive | Black (CR4EPA-103) (CTN10)