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Shimano SLX CS-M7100 Cassette 12-speed

Shimano SLX CS-M7100 Cassette 12-speed

Just as mountainbiking and its riders are constantly evolving, Shimano is permanently striving to provide athletes with innovative materials for an unprecedented riding experience. The SLX M7100 series has been developed for these mountainbikers who want to explore new adventures and adapts - typically Shimano - the technologies of the high-end XTR group. These innovations include 12-speed drivetrain, Micro Spline and Hyperglide+ which have already proven themselves on Deore XT series.

Shimano SLX CS-M7100 cassette

The Shimano SLX CS-M7100 cassette features the Hyperglide+ technology which guarantees high shifting speed, precision and smoothness when shifting up and down and contributes to an extremely quiet drivetrain. The 12-speed cassette is available in 2 versions: 10-45 and 10-51 teeth.

The 10-45 teeth cassette produces as few gear jumps as possible while the 10-51 teeth cassette covers a wide gear range. Both versions have an aluminium spider construction and the largest sprocket is made of aluminium as well. This not only reduces the weight, but improves also robustness and longevity.


The conventional Hyperglide technology ensures smooth shifting upwards thanks to small shifting ramps, which guide the chain towards the next larger sprocket. Also Hyperglide+ uses this functionality but applies it in the opposite direction, too, preventing the chain from falling down when shifting downwards. The result is a smooth and consistent shifting in both directions, free of vibrations and without disrupting the cadence.

Micro Spline

The aluminium freewheel with 22 evenly spaced teeth keeps the cassette firmly under control for immediate response and also allows the use of a 10 teeth sprocket. In addition, the smaller and compared to the usual Hyperglide freewheel bodies more extensive gearing prevents rotor damage.
Fitting for derailleur: 12-speed
Material: sprockets 1 to 11: steel
sprocket 12: aluminium (anodized)
spider: aluminium (painted)
Weight supplement: 10-45 teeth)
approx. 534 gram (10-51 teeth)
(manufacturer's specs

Fact Sheet of Shimano SLX CS-M7100 Cassette 12-speed

Product Name: Shimano SLX CS-M7100 Cassette 12-speed
Manufacturer: Shimano Parts
Item Code: SHI425166
activity: Cycling
usage bikesport: MTB
gear ratio: 10-12-14-16-18-21-24-28-32-36-40-45
shifting system: 12-speed
Freehub Body: Micro Spline (Shimano 12s MTB)
Model year: 2023
Color: Silver, Metallic
weight: 513g
manufacturer item code: ICSM7100045 (10-45 teeth)
ICSM7100051 (10-51 teeth)
Manufacturer page: