This was the truck I have, with the stock setup as shown they aren't very fast, but the slower you go the less parts you break. I have replaced every part on my truck, there are no original parts left on it. I said earlier how I smashed into a storm drain and had to replace the upper and lower frame, bulkhead, A-arm, steering knuckle and several other parts. I spent $35 fixing it so it's cheap to fix and everyone stocks Traxxas parts. I have even upgraded the transmission to all steel gears, bearings are common for them and don't bother with Aluminum A-arms and stuff because instead of breaking or bending then snapping back into place they bend and through off the alignment. Use RPM aftermarket parts they have a warranty, and are more forgiving of damage. This is the same truck I was able to get to 89 mph. I'll post a pick of it when I get home.
Jeff