Wolf Tooth Tanpan is the compact drivetrain adapter that makes Shimano road shifters and Shimano mountain rear derailleurs work seamlessly together. For riders building wide-range gravel, cyclocross, commuter, or adventure setups, the Tanpan bridges the cable pull difference between road and MTB systems—unlocking greater gearing range and improved chain security without replacing your entire drivetrain. By amplifying road shifter cable pull, the Tanpan allows precise indexing with Shimano mountain rear derailleurs. This makes it possible to run larger cassettes and clutch-equipped Shadow+ derailleurs on drop-bar bikes. The result is expanded gearing for steep terrain, better chain control in rough conditions, and a simplified 1x drivetrain option for riders who want reliability without unnecessary complexity. Weighing just 18 grams, the Tanpan tucks neatly above the rear derailleur. An integrated indexed barrel adjuster allows quick cable fine-tuning, and the CNC-machined 6061 aluminum body is paired with a Delrin wheel and stainless steel hardware for durability and smooth operation. Each unit is made in the USA. Compatibility Overview Tanpan 11: Use an 11-speed Shimano road shifter with an 11-speed Shimano mountain rear derailleur. Tanpan 10: Use a 10-speed Shimano road shifter with a 10-speed Shimano mountain rear derailleur. Tiagra 4700: Compatible when using Tanpan 11 with an 11-speed Shimano mountain derailleur and 10-speed cassette. GRX ST-RX400 10-speed: Use Tanpan 11 with an 11-speed Shimano mountain derailleur and 10-speed cassette. Deore M5120: Compatible with Tanpan 11 only. Tanpan 10 Derailleur Compatibility: Shimano M980, M780, M670, M610. Mounting: Tanpan 11 mounts directly to adjuster-free cable stops on Shimano rear derailleurs. Tanpan 10 should be mounted inline for optimal performance. Important: Bikes with internal routing exiting near or past the axle may require the Inline Tanpan version. Wolf Tooth Tanpan Specs at a Glance Function: Adapts Shimano road shifter cable pull to Shimano MTB rear derailleurs. Weight: 18g. Material: 6061 aluminum body, Delrin wheel, stainless steel bolt. Adjustment: Integrated indexed barrel adjuster. Recommended Cable: 1.1mm diameter shift cable. Origin: Made in the USA. Design Benefits Expanded Gearing Options: Run wide-range MTB cassettes with drop-bar road shifters. Improved Chain Security: Enables use of Shimano Shadow+ clutch derailleurs. Lightweight & Compact: Adds minimal weight and integrates cleanly near the derailleur. Precision Shifting: Refined cable routing and indexed adjustment maintain crisp indexing. Final Take The Wolf Tooth Tanpan is a smart solution for riders pushing Shimano road drivetrains beyond traditional limits. Whether you’re building a gravel adventure bike with massive range or simplifying to a 1x setup with a clutch derailleur, the Tanpan delivers clean integration and dependable shifting in a remarkably small package.
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