These belts are the same as the standard one but with the new ratchet tightening system. With the ratchet, you can make the belts as tight as you want to. The driver can do it all by himself without the aid of any crew members. Also, most belts will stretch while you're racing and feel loose under caution. With the ratchet belts, you can tighten them up under yellow and stay tight during the race. You will need a 1/4" ratchet as this is not included with the belt set. A setscrew keeps it locked in place so it won't vibrate out during the race. You must either weld a spud in the frame to mount ratchet belt or we have a bolt-on clamp.