It might look normal from the outside, but the engineering inside this incredible chain design makes possible a gear range previously found only in 2-chainring drivetrains.
The all-new SHIMANO DEORE M6100 rear derailleurs deliver advanced shifting performance with decreased tension in the low gear position. Larger 13T pulleys increase efficiency and chain management while compatibility with SHIMANO's new 12-speed
The M6100 chain provides smooth shifting and enhanced chain retention thanks to an extended portion of the inner plate. The new chain features QUICK-LINK assembly and is optimized for HYPERGLIDE+ cassettes and DYNAMIC CHAIN ENGAGEMENT+ chainrings.
Whether for prized race machines or the build of their dreams, the XG-1299 cassette is the ultimate, giving riders unprecedented 520-percent range thanks to the new 10-52 tooth-span.