RE: Is 4 lbs. to heavy for a 1/10th scale car???
titanium screws wil lsave a few ounzes. It matters in electric, but not so much in nitro. The 1/12 minimum weight is 28 ounzes, so those few really help, lol. titanium is a lot stronger, but aluminum is 1/3 the weight of your present stuff. so i would probably go with aluminum in the less stress area.