OK!
weight 419g
Stunning. I showed to a friend, this cassette and the Sram one in the second photo that cost £300 which one looks the best, He said this one. That says it all. CNC machining is incredible!
These cassette’s do not work! They have a narrow wide large sprocket (52tooth). This is the problem. The chain moves as you change gear, so the narrow part of the chain will hit the wide part of the large sprocket about 3-4 times in 10. Making this cassette completely useless!. Narrow wide works on the front chainring as the chain does not move. But on the rear it does when changing gears. So inevitably the chains narrow part will hit the wide part of the large ring of the cassette, so it will skip over the sprocket and not work properly. Even if you move the chain onto the next tooth, this will happen again as the chain moves at the rear sprocket. All Ztto cassette have a narrow wide large ring, making them all completely useless. ZTTO just drop the narrow wide large sprocket and you will have some of the best cassettes available!! Mad I will buy again.