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The Negotiator. The Tanpan makes Shimano 10- and 11-speed road shifters work with 10- and 11-speed mountain bike rear derailleurs. Crossing boundaries and breaking down walls: the Tanpan brings the range and security of Shimano mountain rear derailleurs to Shimano-equipped drop-bar bicycles. This means a greater gearing range for bigger adventures, better chain security for rough terrain, and lighter weight and reduced complexity for the daily commute.
Compatibility Compatible with most road, gravel and CX bikes. Tiagra 4700 is compatible with Tanpan but for proper shifting use Tanpan 11spd and an 11spd rear derailleur with a 10spd cassette. Deore M5100 rear derailleur is compatible with the Tanpan 11 ONLY Compatible with Tiagra 4700 when using Tanpan 11 and corresponding 11-speed derailleur. The Tanpan 10 is compatible with Shimano M980, M780, M670, and M610 dérailleurs 10-speed Shimano mountain derailleurs may be used with only a slight decrease in shifting performance The Tanpan 11 is compatible with 11-speed Shimano road shifters and optimized for eleven-speed Shimano mountain derailleurs (includes new Dura Ace 9100) The Tanpan 11 is designed to mount directly to adjuster-free cable stops on Shimano rear derailleurs. Tanpan 10 must be mounted inline for optimal performance. 11-speed Shimano mountain derailleurs may be used with only a slight decrease in shifting performance.