Shimano XTR CS-M9101 Cassette — 12-Speed, 10-51T, Micro Spline, Mountain Bike

Shimano XTR CS-M9101 is a lightweight 12-speed 10-51T mountain cassette with titanium and alloy sprockets for race-level performance and a massive gear range.

Race-light 12-speed XTR range, genuine Shimano, brand new.

Will it fit? This is a 12-speed 10-51T cassette for a Shimano Micro Spline freehub. A standard HG freehub will not accept it. For Shimano 12-speed mountain drivetrains (XTR, XT, SLX, Deore), pair with a 12-speed HYPERGLIDE+ chain.

Key Specifications

Technology Highlights

• ✓ Huge 10-51T range, 510% spread for steep climbs and fast straights.
• ✓ Titanium and alloy sprockets, flagship light weight at 367 g.
• ✓ HYPERGLIDE+, fast, shockless shifting in both directions under power.
• ✓ BEAM SPIDER construction, carries the large sprockets on an alloy carrier to save weight.
• ✓ M9101 revision, the noise damping spacer is bonded to the cassette rather than supplied loose.

What's in the Box

• 1 × Shimano XTR CS-M9101 12-speed cassette (10-51T)
• Lockring & documentation (as supplied)
• Original Shimano retail packaging