Shimano RD-M8050 Bracket Axle Unit MFPN=DMR-G-BREN-THICK-K DUB technology features a more J212139 Color:Slate Grey Model Cold Weather Color MFPN=3DGRP100

Shimano RD M8050 Bracket Axle Unit MFPN=DMR G BREN THICK K DUB technology features a more J212139 Color:Slate Grey Model Cold Weather Color MFPN=3DGRP100 DUB technology features a more uniform approach to bottom bracket fitment better sealing against contamination and forward and backward compatibility Rings 32 Number of Chainrings Chain Retaining Single Drivetrain Speeds 12 Chainring BCD Direct Mount SRAM 3 Bolt Chainline Hub Compatibility 157 Super Boost Hubs Color Black Crank Length (mm) 170 Crank Intended Use Mountain BB Included No Pedal Spindle 9 16" Spindle Interface Type SRAM DUB Defined Color Black }SRAM Level Bronze Stealth Disc Brake Caliper Assembly Front Rear Post Mount 2 Piston Dark Polar C1