SCORPION PRO is without a doubt the best offer in the market today for a folding carrier specifically designed to carry e-bikes and including lots of features.
New towball mounting system
Larger mounting frame
Steel locking cable integrated
Integrated loading ramp (mounts onto rack when not in use)
Roller wheels
Easy tilting
Front wheel anti-sway straps
 
Carries
2/3 bikes
Max Load
60 kg
Max Tyre Size
4"
Fits
50mm ISO tow ball
Tilting
Yes
Lock Bike to Rack
Yes
Lock Rack to Car
Yes
Not suitable for trailers, campers, or RVs
 
The maximum permitted load you can carry is also determined by the tow bar nose weight; you will need to check you don’t exceed this before using any tow ball mounted bike carrier.
Requires 65mm clearance from center of tow ball to rear of vehicle.