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40% better wear resistance than previous models
The Shimano M8100 is the suitable cassette for new XT 12-speed group
Braking power tuned for entry MTB riders
11-42 for 2x11-speed
8-speed cassette for HG or IG chains Key Features Hyperglide sprockets have a computer designed tooth configuration with contoured shift gates
Shimano BR-R8070 Disc Brake Caliper Rear Ultegra Hydraulic with Resin Pad Size:REAR 40% better wear resistance thanShimano's Ultegra R8000 continues to deliver virtually the identical performance of Dura Ace at a price the self sponsoring racer can afford. With the Ultegra BR R8070 Flat Mount Disc Brake Caliper, riders now have an Ultegra model hydraulic disc brake for the first time offering confident control in all riding conditions. Much like the rest of the group, technologies from the top tier Dura Ace R9100 road components trickle down to this caliper giving