RStaggs, pay close attention to the fact that Pedro set everything at ride height with tires and wheels and THEN found his shock mount points, which centered the shock in the "Sweet Spot" center of its travel, absolutely critical with the very short 4" travel. Miss it by as little as 1/2" and now your shock only has 1-1/2" of travel in compression, not good and downright dangerous. With yours the way you described, with points already determined, a 5" travel shock is the only alternative. They will be about 11" compressed and about 16" extended, sweet spot at 13-1/2", and that is good. A 4" travel shock is completely extended at 14", where you say your sweet spot is. A 6" travel shock is fully compressed at 12" or 13", not leaving enough rebound stroke. Here is another thing that is absolutely critical. All of these assumptions were for tires and wheels that have not been selected yet. Change the tire diameter by 1" and it will change the sweet spot location by about 1/2". Now you only have 1-1/2" of compression and again this is dangerous. It is good to know what Pedro has used but because of the different tire combinations on the NAERC chassis, one size is definitely not a fits all.
