OEM Version. No Box Sleek integrated appearance New low-profile design SHIMANO SHADOW RD Race endurance Optimized slant angle Wide compatibility Maximum Sprocket : 12T (Top) / 34T (Low) Minimum Sprocket : 11T (Top) / 28T (Low) Maximum Front Difference : 16T Total Capacity: 39T RD-GS covers: 11-28T to 11-34T Type Rear Derailleur Brand Shimano Model Ultegra MPN Does not apply Cage Length Medium/Long Cage Number of Speeds 11 speed UPC Does not apply Part Type Bicycle part .
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