Designed to keep up with increasingly higher horsepower ¼” thick 4130 bracket. Bracket has been used on RJ built cars for years! Close tolerance holes for the ½” NAS bolts provide considerably less bolt movement than other systems. The brackets also feature a hole spacing of .800” instead of the normal 1” spacing to allow for a greater range of adjustment.
When mocking up and welding together brackets you should use grade 8 bolts. After all the welding is done you should ream the holes to correct size. DO NOT USE A DRILL BIT!
We recommend using NAS bolts.