Well my Hurricane XP has a Dynamite Mach 26SS in it as I swapped out the SH .28 that came with it. My TUW has 8 GPM T/E MAXX blue aluminum shocks with a OS.18 engine. The wheels are Junfac 2.2" beadlocks with blue 19mm wheel wideners.
Also I use an aluminum clutch in my TUW with the Volcano gear reduction transmission to give it more torque for offroading, it isn't fast but it can crawl over just abou anything half its height!!!!