Panic RC do 10th Off Road foams, they are the standard firm rear foams. But the front's are slightly firmer.
This reduces the front end of the car bouncing around. They are also ok to be put in acetone (when you remove the tyres)
These are the same foams Ellis Stafford and Kevin Lee use, and they will also be releasing the all new memory foams!!!!
You can purchase them from
www.theraceplace.co.uk..
You will also find they are bit cheaper then most other makes too.
Hope this helps