I’ve now installed two Super Short groups on bikes for two of my kids. The quality of the parts is “fine”. As good as I would expect for the price, and more than good enough for 8sp and kids’ bikes.

Both rear wheels have freewheels, but since spacing is the same for 6,7,8 all works swimmingly, just one or two clicks less.

The clutch is not as powerful as on a nicer MTB derailleur, but again, more than good enough for my kids’ bikes and we haven’t had any dropped chains, despite ramps in the street and trips to the skatepark.

Shifting is easy and the shifter sits closer to the bars to accommodate small hands better, but my monkey hands have no trouble hitting the shifter paddles.

Having some experience with this stuff now, I’m very much tempted to put the 9sp Super Short group on my Bike Friday Pocket Llama. I’d up the chainring, just a bit, and rebuild the wheel without the SRAM Dual Drive, just to simplify the drive train.