They do the work I need them todo fast trail running on the flat mainly, my Kanyon is running an Absima A10 brushless, outlaw open diffs in both, RC4WD copy twin motor winch for nose weight, alloy chassis rails mod on both, Steel pinions in both, DF-4J runs a 1080 and a Surpass 5 slot 550 12 turn, both are a blast just on 2S, sitting lowish on soft springs and they look box stock other than that but go really well and cruise at walking pace very nicely.