Originally Posted by Rocky529
If you get a coil equal to exactly how much the stock coil and a suspension spacer equals, how would it be more flex?
Because springs compress and expand, spacers don't... I used to ask the same question...
It's a lot easier to fully compress (over-compress) a stock coil with a spacer lift, you'll have pretty much sagged the stock spring if you do that a few times, it's why you extend the stock bumpstops (less flex).
A full coil has a little more rate and slightly wider spacing on the turns and also a slightly longer wire to it. It is more forgiving because you'll hit the stock bumpstop before you fully compress it. Hence more flex.
This is the way it was explained to me by a spring shop, made the most sense to me and is why I got a 2" full coil spring kit.