The e*thirteen chain guide developed with Bosch helps keep the chain locked on the chainring when pedaling over rough terrain.
Included spacers now allow for 52 or 55mm of chainlines.
Features
– Two-bolt nylon backplate mounts directly to Bosch motor
– 34-38 tooth compatibility
– Also compatible with ISCG05 mounts
– Designed for Trek 2020-2023 Rail & Powerfly models
– Included hardware is available separately for older models (See Service Parts)
