Surly

DUH System - Single Speed Chip and Hardware

Surly DUH System - Single Speed Chip and Hardware is the key frame hardware for converting a Surly DUH-equipped bike from geared to single speed. It replaces the geared chip with a dedicated single-speed setup, giving a clean, purpose-built way to run one cog without a derailleur hanging off the back of the bike.

This kit includes the single-speed chip and matching hardware, and it is designed to be used with the Surly DUH single-speed rear thru-axle (FS0270, sold separately).

• DUH single-speed chip - Converts a DUH dropout from geared use to a dedicated single-speed configuration
• Included hardware - Provides the correct fasteners for a straightforward, complete chip install
• System-specific fit - The DUH single-speed chip and hardware only work with the Surly DUH single-speed thru-axle (FS0270, sold separately)