Shimano Ultegra BR-RS811-R Road Caliper Brake - Rear Under Bottom Bracket Direct Mount BLK Model=XX Eagle SL T-Type 12-Speed Flattop Chain Defined Color Black Rings 32 keyword search-EB1390001M Crown:58HT Professional quality chain uses SA5139

Shimano Ultegra BR RS811 R Road Caliper Brake Rear Under Bottom Bracket Direct Mount BLK Model=XX Eagle SL T Type 12 Speed Flattop Chain Defined Color Black Rings 32 keyword search EB1390001M Crown:58HT Professional quality chain uses SA5139 Defined Color Black Rings 32 Spindle Interface Type SRAM DUB Chainring BCD Direct Mount SRAM Color Black Chainline Hub Compatibility 141 148 Boost Hubs Drivetrain Speeds 11 Drivetrain Speeds 12 Number of Chainrings Chain Retaining Single Crank Intended Use Mountain BB Included No Pedal Spindle 9 16" Crank Length (mm) 165 Dual compound casing for affordable all around performance