XTR CS-M9101 12-Speed Cassette 10-51T Black Silver Built For Mountain Bikes Tough Steel Cogs Lightweight Aluminum Carrier Smooth Shifts Micro Spline Ready

12-Speed MTB Cassette for smooth, fast shifting
✔️ Cog range 10-51T, 10-45T options; Micro Spline ready

The CS-M9101 12-speed MTB cassette is built for mountain bikes, delivering smooth, quiet shifts on rugged trails. It uses steel cogs and an aluminum carrier for durability and light weight, with Micro Spline compatibility for modern hubs.

✅ Cog sizes: 10-45t, 10-51t
✅ Cog material: steel
✅ Freehub type: Micro Spline
✅ Carrier material: aluminum
✅ Includes: 1 lockring
✅ Color: Black/Silver
✅ Construction: Beam Spider for rigidity
✅ Tooth profile: Hyperglide+ for smooth shifts

💡 What is a Micro Spline 12-speed MTB cassette used for on modern bikes?

Handy gear that provides reliable shifts and a wide gear range on rugged trails. - 12-speed MTB cassette with Micro Spline compatibility for current hubs
- Wide gear range (10-51T) enables climbs and fast cruising
- Hyperglide+ tooth profile promotes smooth shifts under load