I have a pre-owned OMM Sherpa rack that I purchased to test fit on
my recumbent, but decided to go with a different rack that fit that
wacky bike better. Old Man Mountain makes these racks in the USA, so the
price is a bit high ($210+ for this Sherpa), but so is the quality. The
rack is rated for 70 lbs and can be installed on the front of rear of a
QR equipped bike, with or without disc brakes. Includes the required
extra long QR and the upper "arms". You'll need to supply M5 bolts and
P-clamps if you need them. If you have Through-Axles or another fit
issue various "Fit Kits" are available for a custom fit on almost any
bike.
Rack is used, but in excellent shape. $85 + $20 shipping.
Cheers,
-Jack