The first time, I saw the tiny cars racing in the offroad, at the "Ringo-jam
Offroad Meet" in Nagano 1999.
I thought such small cars could not run in offroad.
But soon, it realized I was wrong, It's exciting offroad racer.
M03 shows high-performance in offroad, if you are setting rightly.
no need any special parts for conversion.
option parts are
#53348 M03 BALL BEARING SET (indispensability)
#50746 CVA SUPER MINI SHOCK UNIT SET(indispensability)
#53345 (TL01,M03)TOE-IN REAR UPRIGHT (recommend)
#53163 On-Road Tuned Spring (recommend)
If you want more power, many optional motors can be added for soup-up,
I recommend a standard differential-gear for Mini Rally.
HPI RALLY SOFT tyre shows the mightiest-grip at all terrain.
SP.423 Rally block tyre shows average grip,
As for the way of making them, please refer to the following.