What are the top, "must do" mods for the NB 1:10 Crawlers?

I'm talking about mods that every NB owner should do.
I'd like to create a list for the Newbies to get started.

Let the modifications begin...

RhinoBuggy .... WELCOME on the forum ..

The best system is the system of MR FLAPDING ..

Not cutting plastic, just install the gears in the place of others and change the pinion ..

PM .. MR FLAPDING for information ..

Other system are explained at the forum ..

YELLOW-CRAWLER (addition of a fourth gear .. LOULOU) ...

and a few other systems ..
PS ..
Good luck ... For all other mods, read the topic related to your expectations ..

THANK

This message has been edited. Last edited by: loulou,