Shimano SLX cassette 10-51, CS-M7100051, Micro Spline, 12-speed

Shimano is following suit and is also using a 12-speed drivetrain for the SLX M7100 groupset. In contrast to the competition, however, the Japanese company gives riders the choice of whether they prefer a maximum range (10-51 teeth) or a more closely graduated cassette with smaller cadence jumps when shifting (10-45 teeth). The former particularly appeals to riders who want to pedal long and steep climbs with high cadences.

Smooth and precise shifting has always been a hallmark of Shimano cassettes. In the Hyperglide cassettes of the last generations, the sprockets were positioned in such a way that the chain runs extremely smoothly and with little vibration, especially when shifting to a larger sprocket. With the SLX M7100 cassette, Shimano introduces Hyperglide+. Thanks to this technology, shifting now runs just as smoothly even when shifting into a heavier gear and is 1/3 faster than with the CS-M7000 cassette.

In the construction of the cassette, Shimano relies on a material mix of steel and aluminum for the sprockets. While the ten small sprockets with the lowest chain wrap and highest load are made of steel, the two large sprockets are made of aluminum. This load-dependent use of material leads to even wear of the cassette and also extends the service life of the chain. The cassette is held together by an aluminum spider.

Cassette sprocket (12-speed)

New climbing aids with HYPERGLIDE+ technology ensure the fastest and most comfortable shifting possible
12-speed drivetrain with high bandwidth or narrow gradation
Micro Spline mount