e*thirteen Helix Narrow Wide e*spec 104 mmBCD chainring

Helix Narrow Wide e*spec 104 mmBCD chainring by e*thirteen

The Helix Narrow Wide e*spec 104 mmBCD chainring by e*thirteen is built for MTB use and gives your 1-speed drivetrain a secure, clean chain interface. Its narrow-wide tooth profile helps keep the chain in place when the trail gets rough. The round design delivers a familiar pedal feel and straightforward power transfer on every ride. With 104 mm BCD, it fits compatible crank setups and makes it easy to refresh your drivetrain. The chainring is approved for E-Bikes and S-Pedelecs up to 45 km/h, so it suits powerful bike builds as well. If you want dependable chain control and solid compatibility for your MTB setup, this chainring is a smart upgrade.

black | 32 | 32 :

Crank speed:

Single-speed

Teeth:

32

black | 34 | 34 :

Crank speed:

Single-speed

Teeth:

34

black | 32 | 32 :

Gear Ratio Crank:

32

Chainring Material:

Aluminium (7075)

black | 34 | 34 :

Chainring Material:

Aluminium (7075)

Gear Ratio Crank:

34

• Helix Narrow Wide e*spec 104 mmBCD chainring for 1x drivetrains, built for E-Bikes and S-Pedelecs up to 45 km/h
• Narrow Wide tooth profile helps keep the chain secure on rough rides and under high pedal loads
• 104 mm BCD fit makes it a strong choice for compatible cranksets in modern MTB and e-bike setups
• Optimized for 1-speed chainring use, delivering a clean and efficient single-ring drivetrain configuration
• Round chainring design supports smooth power transfer and consistent pedaling performance

• black | 32 | 32 : CR5HAA-100
• black | 34 | 34 : CR5HAA-101

• 1 x e*thirteen Helix Narrow Wide espec 104 mm BCD chainring