Description

Direct mount retainer ring designed specifically for our Bosch Motor E-Bikes

Features:

• Saves weight without need for a separate spider
• The narrow/wide chainring is designed to retain the chain without the need of a chain device
• Quieter drivetrain and less drag
• CNC machined 7075-T6 aluminium provides the perfect blend of lightweight and strength
• Compatible with 9, 10, 11 and 12 speed set-ups
• Hard anodised finish makes them ultra durable and increases longevity