How to add more bounce to a vehicle after landing?

Hey everyone! I’m developing a monster truck game and when the trucks land after a jump, I’d like the suspension to push back with enough force to send the truck back into the air, but I can’t seem to make it work… any thoughts? (I’ve also tried to “hack it” by adding a physics material with a high restitution value to my landscape, but that seems to have no effect)

Do you resolve this ? Want to make something similar but can’t find how to add more bounce on Unreal 5 vehicle.