Originally Posted by TheDirtman

When you are looking at these coils that use a dead zone on top (tender) They are made for long travel and have nothing to do with ride quality. If you don't run a long travel shock the "dead zone" type coils are not a benefit. Just to be clear, you are going to need other stuff like tuned shocks and air bumps to drive like a pre runner with plenty of up travel.

Originally Posted by Yamaha90

OP, If you're not looking for very much lift RK has a 1.5" coil that would yield a better rate than your current coil, with minimal lift. When paired with a better shock absorber, you can achieve a much better ride for the trails you're traveling.

Originally Posted by TheDirtman

Just to be clear, you are going to need other stuff like tuned shocks and air bumps to drive like a pre runner with plenty of up travel.

Originally Posted by Rock Krawler Suspension

To "go fast" you will need a good amount of well controlled up travel. Low COG setups are not the ticket for going fast....

Hope that helps. There is a lot of good information in this thread...
RK

Originally Posted by BLK08JK

Yamaha or RK... where can I find the 1.5" coils? This sounds short enough that I don't need any relocation bracketry or extended lines, correct? Understood. Yes, lots of great info, thanks to everyone. I'm not trying to win baja here, I just feel that 10mph over these washboards is ridiculous and I should at least be able to double if not triple that.

Originally Posted by BLK08JK

Last weekend I went for a group run and within seconds was left in the dust - my front suspension sounded loose and noisy and my rear end kept sliding out left and right. Yes I did air down and disconnected sway bar. I'll be honest that I felt pretty annoyed and defeated because I don't know where to start. Would shocks alone help? Are the springs too stiff? Need better bumpstops?

Originally Posted by Mike H.

I'm in Phoenix, so I likely wheel some of the same terrain as you.
What were the guys running that left you in the dust? That would be my first comparison.
The fancy bumpstops are only going to be usefull hitting larger whoops/objects, they not do anything for you on washboards.
Hate to tell you, but 35's or 37's will make the biggest difference, as the tires angle of approach is more favorable.
I'm running simple springs/shocks (MetalCloak/OME)and do not get left in the dust. I had an XJ for 17 years that ran 2.5" OME springs/shocks and that thing would haul the mail on the "roads" to the trails. Both of those setups use essentially a "single stage" coil and simple shock... decent stuff, but nothing high dollar or complicated.

Originally Posted by BLK08JK

So which is it really? Are there "usable" triple rate springs - using all three rates? On RK's website, looking at component upgrades is the only place I see triple rated springs mentioned, all the kits refer to them as multi-rate. I've been trying to find the right builds and videos, the only vids are Teraflex Prerunner stuff. If you know of others please post them up. I mean the RK max travel kit looks similar to the TF Prerunner kit minus some bracket stuff. Both of them get into long arms, caster and pinion adjustments where I'm too much of a noob to do this myself. RK's website is difficult to determine the purpose and difference between kits. 2.5 Stock Mod System, overland, max travel, flex system, x-factor - all Multi Rate Coil Springs, overland vs flex for example? Overland has some rear links and front brakelines? Flex doesn't? Originally I wasn't even thinking of lift, I'm not trying to run bigger tires as my 3.8/trans combo is anemic now with 32's. But there are zero multi or triple rate coils without increasing height. Shocks and bumpstops - easy peasy. Coils, not so much. Still a bit confused - Dirtman saying RK not truely triple rate, RK saying AEV is more overland tuned, RK website using muti-rate/triple rate interchangeably and I don't fully see the benefits of having 5 different 2.5" kits - one adjusts only caster, the other pinion and caster, makes it confusing to know what is actually required to make it ride well.

Originally Posted by BLK08JK

It really ran the gamut and there were over a dozen rigs so I couldn't for sure list what was on each, but I saw 35's and 37's, unknown lifts, bilstein and fox shocks, and there was even a stock 4 door along. Which is where I don't know if he had the same bumpy experience I was having and just didn't care cuz that's what jeeps do. I left the group rather quickly as I couldn't keep speed comfortably.