Shimano CS-M8100 Cassette 10-45 12-Speed XT

Switched out the M6100 12 speed cassette on my Vitus Sommet 297 CR with one of these M8100 cassettes, and there is a considerable weight difference between the two. I can't say performance is any different, but there's definitely a weight savings benefit. On my digital scale, the M6100 came in at 588g and the M8100 came in at 455g. That may not sound like much, but you can really feel the weight difference in your hand, which means you're dropping some weight on your bike, and it's rotational mass. Not much to say other than another great Shimano product, that's a pretty good bang for your buck when looking at other options.

This cassette is extremely well made. Probably equivalent in tooth profile build quality to the Eagle cassettes. I can't afford to spend $389 on an Eagle X01 cassette each time I wear it out. Plus, five of the smallest cogs are replaceable. This setup runs really well with my SRAM XX1 shifter and derailleur. I am running a SRAM XX1 chain, which seems to work well. The system seems much smoother and quieter than SRAM Eagle. I am totally pleased with this purchase. I will likely change all by mountain bikes to this setup.Cons:It weighs more, and requires a micro-spine freewheel in order to adapt to an SRAM hub.

I needed a Shimano cassette for my mountain bike. Not only was it hard to find elsewhere but Moosejaw had several. They saved the day and got me out on my bike fast!Thank you!!!!