QR Adapter
https://www.tubus.com/en/products/ac...-axle-mounting
Seatpost clamp with rack mounting eyes
https://problemsolversbike.com/produ...seatpost_clamp
Any non Evo Tubus Rack or a similar rack with two mounting holes at the bottom
Another option
https://www.tubus.com/en/products/re...-product/disco with the Problem Solvers Clamp above