Box Two Prime 9 X-Wide 11-50T/12-50T Cassette

A great cassette with incredible range that shifts smoothly using a Box One Prime 9 extended reach derailleur and Box One Prime 9 cable puller (shifter) in the single shift eBike version due to my preference for single shifts up or down, but not an inline electric wheelchair / electric moped. What's incredible is the featherweight of an 11 - 50 cassette. If this product is ever discontinued I'll have to landfill my bike. I'll never use any other cassette, having been through a range of different ones from low price budget cassettes to ridiculously high cost elite brands. (Not that there's anything as elite as B1 for a 1 x 9 setup).

I haven’t installed it yet, waiting for a few more parts for my build. The cassette is well made though it is a tad heavy, actually it’s pretty darn beefy. I may get a box1 if they come available again for the weight savings

I bought this cassette as a replacement for my previous Box 3 cassette, which I damaged. It's a bit lighter, and it works absolutely great and better than the previous one. Shifting is noticeably smoother than the box 3. Very happy with it.