What Springs Did You Go w/ On King 2.5's?

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AZCRSR

AZCRSR

Joined
May 18, 2018
Threads
15
Messages
286
Location
Phoenix
What do you got?

My local shop said to keep the OEM rear springs since the only weight I have are my BudBuilt sliders. Filthy recommends replacing them for OME.

I'm not planning to add bumpers, drawers, etc. anytime soon, if ever. This is my daily driver. Just looking to improve the occasional off-road trip.
 
I would encourage you to look at the OME 2721 springs. IIRC, they are a progressive spring, and will compliment the King's nicely. The BudBuilt sliders will be noticeable if you stick with the stock coils. With the 2721, they will be able to take a little more weight on top of the BudBuilts.
 
I have King 2.5 with 700# front springs with no preload and OME 2721 springs in the rear.

With no aftermarket bumpers or additional weight, I would try the King 2.5 with 600# springs. If the rear sits low (which I think it will), add OME 2721 rear springs.

I have ARB front bumper without winch and arb drawers in the rear with very little weight in them. My front end sits a little high. I need to switch to 650# front springs, add a winch, or add a spacer above rear coils to level vehicle.
 
empty80 said:
I would encourage you to look at the OME 2721 springs. IIRC, they are a progressive spring, and will compliment the King's nicely. The BudBuilt sliders will be noticeable if you stick with the stock coils. With the 2721, they will be able to take a little more weight on top of the BudBuilts.
Click to expand...

Do you think the 2721 will give the rear to much lift? Cruiser Outfitters website show 2721 = No Lift. In another post, @Taco2Cruiser said OME states it's .75 lift. Based on @Markuson pictures in that same post, there is clearly a considerable lift.

I do have the OEM spacer in the front currently so that might help.
 
ohsix said:
I have King 2.5 with 700# front springs with no preload and OME 2721 springs in the rear.

With no aftermarket bumpers or additional weight, I would try the King 2.5 with 600# springs. If the rear sits low (which I think it will), add OME 2721 rear springs.

I have ARB front bumper without winch and arb drawers in the rear with very little weight in them. My front end sits a little high. I need to switch to 650# front springs, add a winch, or add a spacer above rear coils to level vehicle.
Click to expand...

Thanks. 600# springs are the one I ordered.
 
AZCRSR said:
Do you think the 2721 will give the rear to much lift? Cruiser Outfitters website show 2721 = No Lift. In another post, @Taco2Cruiser said OME states it's .75 lift. Based on @Markuson pictures in that same post, there is clearly a considerable lift.

I do have the OEM spacer in the front currently so that might help.
Click to expand...

The 2721 will provide some lift, but keep in mind, you are adding over 200lbs of steel to be split between the front and rear axles, so individual results will vary. They will also prevent that sagging rear-end look if you load of the family for a weekend trip. There are 2720 coils that that call for “less than .75” ” of lift, but I’ve not seen or heard of anyone using them.

If you are putting King’s on the front, I would recommend using the preload collars to adjust the rake to your preference before using a spacer. IIRC, it is either 5 or 8 full turns equals 1” of lift. That is a real benefit to the Kings.

It’s a little bit of a trial and error to balance the aesthetics and performance, but once you get it dialed in, you’ll be very satisfied.

Also, pro tip: Find a local shop that is willing to check the reservoir pressures of your shocks. Kings typically ship at 120psi, but I had pressures between 100-150psi, and the ride was very unpredictable until we sorted it out.
 
I’d guess about 1.5” with 2721, if not a little more. ARB lift estimates are all conservative. My theory is they list them a bit low to help avoid hassle with Australia’s crazy-strict suspension regs... ?
:meh:
 
empty80 said:
The 2721 will provide some lift, but keep in mind, you are adding over 200lbs of steel to be split between the front and rear axles, so individual results will vary. They will also prevent that sagging rear-end look if you load of the family for a weekend trip. There are 2720 coils that that call for “less than .75” ” of lift, but I’ve not seen or heard of anyone using them.

If you are putting King’s on the front, I would recommend using the preload collars to adjust the rake to your preference before using a spacer. IIRC, it is either 5 or 8 full turns equals 1” of lift. That is a real benefit to the Kings.

It’s a little bit of a trial and error to balance the aesthetics and performance, but once you get it dialed in, you’ll be very satisfied.

Also, pro tip: Find a local shop that is willing to check the reservoir pressures of your shocks. Kings typically ship at 120psi, but I had pressures between 100-150psi, and the ride was very unpredictable until we sorted it out.
Click to expand...

Thanks for the pro tip! 🙌 Filthy recommends running them at 150psi. You think 120 is better?

I'll try running it first without the spacers. Spacers seem to be a point of contention around here...
 
Markuson said:
I’d guess about 1.5” with 2721, if not a little more. ARB lift estimates are all conservative. My theory is they list them a bit low to help avoid hassle with Australia’s crazy-strict suspension regs... ?
:meh:
Click to expand...

I'm going to buy a pair off of @TexAZ. He already broke them in so maybe that 1.5 will be more like 1 in. :rofl:
 
I don't think the King shocks are tuned by air pressure. As long as you have the same pressure in each reservoir and adequate pressure for the reservoir to function as designed, I don't think it matters. Tuning is done by spring rate and the shim stacks that the shock fluid moves through.

In the reservoir, there is pressurized nitrogen on one side and shock fluid on the other side. As the shock extends, and a portion of the shaft leaves the shock body there is more space in the shock body for shock fluid. The reservoir pushes fluid into the shock as the shock extends and the shock pushes fluid into the reservoir as the shock is compressed.

 
ohsix said:
I don't think the King shocks are tuned by air pressure. As long as you have the same pressure in each reservoir and adequate pressure for the reservoir to function as designed, I don't think it matters. Tuning is done by spring rate and the shim stacks that the shock fluid moves through.

In the reservoir, there is pressurized nitrogen on one side and shock fluid on the other side. As the shock extends, and a portion of the shaft leaves the shock body there is more space in the shock body for shock fluid. The reservoir pushes fluid into the shock as the shock extends and the shock pushes fluid into the reservoir as the shock is compressed.

Click to expand...

Correct. I believe @empty80 was referring to the pressure of the nitrogen.
 
AZCRSR said:
Thanks for the pro tip! 🙌 Filthy recommends running them at 150psi. You think 120 is better?

I'll try running it first without the spacers. Spacers seem to be a point of contention around here...
Click to expand...

I actually run mine at 200psi on the recommendation of Tactical Application Vehicles. They still range very plush to very stiff, and each turn of the dial yields a tangible feel in the cockpit.
 
I have King's (3.0) on my 200 and went with the ICON rear springs, extremely happy with the ride quality...gave the truck the perfect lift in the rear to compliment the small lift I cranked up in the front to accommodate the 275/70/18s.
 
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