Those teeth are there to keep the connection from moving around. They won't hurt your frame. In fact, if your washer idea frets, it can do more damage to the frame than the teeth.

 

when you say move around, i assume you mean the shock can move up and down on the bolt right? if so, i would bring my old bolt and shock to compare and see if the inner sleeve diameter is larger. i would guess it should be the same inside diameter...if not i wont buy them. those teeth really bother me there...my original GM shock did not have those teeth there and it was fine since we bought the truck new...

 

I know it's old "sorry" but which of the two is the smoothes ride? I have a 98 Zr2 with the billsteins and she rides harsh like a drunk college girl! In fact which shock is best for a daily driver?

 

FWIW I have Reflex on a 2wd 4dr and would prefer a little less compression dampning and a little more rebound dampning. As the truck seems to raise over bumps.

 

I'm looking to take bumps without the entire truck bouncing