The Deore XT M8000 lineup is the 1x11-specific 11-42T cassette, which offers a broader gear range compared to the race-focused 11-40T of the XTR. With Rhythm Step progression, the Deore M8000 ensures smooth, precise gear transitions, helping you conserve energy and maintain speed and rhythm on the trail. Combined with a premium 11-speed chain featuring an HG-X11 asymmetric plate design and SIL-TEC surface treatment, the Deore XT M8000 provides exceptional mountain biking performance. Features: Sprockets are cut away & drilled to further reduce weight without reducing rigidity. SIL-TEC surface treatment technology (PTFE plating) on inner and outer links and rollers that is smooth running and increases durability Light & durable 40/42T sprockets. Chrome-plated finish offers hard wearing resistance to corrosion. Alloy cassette lockring. For 11 speed HG-X11 MTB chains.