Losi Rear Truck Shocks.
 

I just tried the Losi rear truck shocks on my 6 squared. I really liked it. It always seemed that when I ran the outer hole on the rear arm that I never seemed to get the travel I wanted. With the longer shock, I had tons of travel and steering. My local track can be rather bumppy so this seemed to helped a lot. The car seemed to be very stable but responsive too. Has anyone else tried it?