Shimano XT M8100 10-51h cassette.

The 12 speed Shimano XT system is made for both the exerciser and the competition rider.

The 10-51 cassette can be used for both fun and competition. Then you are sure you always have gear you need to get up the hills.

The 2 largest gears are made of aluminum to keep the weight down, and the smaller gears are made of steel, to be able to withstand the wear and tear from the several laps they drive around.

The teeth are made with Shimano's Hyperglide + technology so it changes better, and it is quieter when you use Shimano's chains.

It is mounted on a Microspline cassette case, so you can not mount it on a standard cassette case.

With the new system, it also runs with a 10-tooth gear as the heaviest gear, so the cassette spread becomes wider and it gives you a higher top speed.

Shimano XT M8100 10-51h cassette.

The 12 speed Shimano XT system is made for both the exerciser and the competition rider.

The 10-51 cassette can be used for both fun and competition. Then you are sure you always have gear you need to get up the hills.

The 2 largest gears are made of aluminum to keep the weight down, and the smaller gears are made of steel, to be able to withstand the wear and tear from the several laps they drive around.

The teeth are made with Shimano's Hyperglide + technology so it changes better, and it is quieter when you use Shimano's chains.

It is mounted on a Microspline cassette case, so you can not mount it on a standard cassette case.

With the new system, it also runs with a 10-tooth gear as the heaviest gear, so the cassette spread becomes wider and it gives you a higher top speed.