what you could do is disassemble all 4 shocks and take the proper amount of fuel tubing(depending on how low that you want the rustler to sit) and put the fuel tubing on the part of the shock shaft that is inside the shock body and below the shock piston. this will limit how far your shocks can decompress and give you a lower ride hieght without making you suspension soft and spongy, it will not limit how far the shocks compress.