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 drivetrain, 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.
Chainline
13mm offset for 53mm chainline
15mm offset for 55mm chainline
15mm offset for 55mm chainline
Color
13mm: Black, Bronze, Eggplant, Naranja
15mm: Black, Bronze, Sterling Silver
15mm: Black, Bronze, Sterling Silver
Compatibility
Bosch Gen4 CX Motor
Bosch Performance Line SX
T-Type Chain Compatible
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
Pairs perfectly with e*thirteen Helix Race e*spec Alloy Cranks
Size
32T, 34T, 36T (Black only)
Weight
13mm offset:
32T: 99g
34T:107g
15mm offset: 32T: 108g
34T:114g (without rubber dust seal)
34T:107g
15mm offset: 32T: 108g
34T:114g (without rubber dust seal)
