Brompton Stock C Line 2-Speed Upgrade to 3-Speed

This is the most economical upgrade kit for converting a Brompton stock C Line from a 2-speed to a 3-speed bike.

All original rear derailleur parts can be reused without replacement. The original 2-speed shifter only needs an upgrade with the 3-speed internal mechanism kit. The jockey wheel bushing and axle need to be replaced with an extended axle.

For Brompton enthusiasts who love the classic look, this wheelset and kit offer an economical 3-speed upgrade solution. Once the installation is completed, the appearance remains close to stock, while giving you an extra gear for a more comfortable ride.

(Note: this article was migrated from our previous Wix-hosted blog; the original full post length was not available at time of migration.)

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