E Thirteen Helix Core e*spec Chainring - Direct Mount Bosch - Black 2025

E- Thirteen Helix Core direct mount e*spec steel chainrings use M3 narrow-wide tooth profile, which reduces weight without sacrificing chain-retention. This version fit Bosch CX Gen 4 motors, it's made of Steel and provide great performance and long life at a killer price for todays high-performance e-bikes. It offer 53 or 55 mm chainline thanks to the dedicated spacer. 

Features

• Material : Steel
• Capacity : 11 and 12 speed drivetrain
• M3 Narrow wide tooth configuration
• Directly mounts to motor and replaces the full spider assembly for a lighter and cleaner looking set- up
• Fits only Bosch Performance Line CX4 and Bosch SX
• 53 or 55 mm chainline (via spacer)
• Offset : 13.5 mm or 15.5 mm (via spacer)
• Available in 34 teeth or 36 teeth
• Colour : Black

Weight : 189 gr