Review on JGbike Upgraded Shimano MT200 Hydraulic Disc Brake Set For Mountain Bikes: Ideal For XC Trail, E-Bike, And Fat Bike – The Ultimate Solution For A Mechanical Disc Brake Upgrade by Brian Avila

Reliable but "lacks" stopping power like other reviewers previously stated, It was worth the buy though and they come pre-filled so they are a simple swap out. have not used them in winter yet so we will see but i am enjoying the lack of needed adjustments, mine did come missing a valve cover so i need to find something for that otherwise grime will get in it when off road or winter slush which will make a sterile refill quite difficult.Update: I am having trouble finding a substitute for the seal so I am reducing to lower stars in hopes that the the seller helps out other wise I would give 4 stars. I will keep this post updated if the seller does not respond.UpdateBeen a couple years. They still work. They also get much better stoping power if they are bled correctly as in no air in the lines and then they work amazing. This is after I upgraded to 208mm disk breaks from 160mm.