Shimano Deore CS-M5100 11-speed cassette, 11-51T

A wide-range 11-speed cassette built for modern single and double chainring mountain bikes. The 51T low sprocket gives you a climbing gear that lets you keep spinning on steep, loose pitches, while the closer steps lower down keep your cadence steady on the flat.

Highlights

• 11-51T range covers steep climbing and fast singletrack on one cassette
• Rider-tuned gear steps for cadence control across varied terrain
• Hyperglide shifting for smooth, accurate changes under load
• Suits 1x and 2x mountain bike drivetrains

Gear progression

Eleven sprockets: 11-13-15-18-21-24-28-33-39-45-51T. The steps tighten where you ride most and open out toward the climbing gears.

Compatibility and fit

Suits Shimano 11-speed mountain bike drivetrains and mounts on a Shimano Hyperglide freehub body. A 51T low sprocket needs a rear derailleur rated to take it, so check your derailleur's maximum sprocket size and total capacity before ordering. Replace a worn chain at the same time so the new sprockets are not dragged down by an old one.

If you are not sure what your bike takes, ask Tune Cycles before you order.