e*Thirteen e*Spec Chainguide for 55mm Chainline for Bosch
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.
Two-bolt nylon backplate mounts directly to Bosch motor
34-38 tooth compatibility
Does not fit traditional ISCG mounts
Designed for Trek 2020-2023 Rail & Powerfly models
Replaces # W5285377
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