Shock Comparison: Rancho RS5000X vs Skyjacker Black Max vs KYB Monotube

Mostly personal experiences, and opinions.

For example, I have seen many times in this forum that Bilstein 5100 are a stiff shock choice. I have seen that you suggest a lot Skyjacker Black Max Shocks, and that they are a bit softer than Rancho RS5000x.

I would like to know if anyone has personal experience, running both choices, or two of them in the same rig. And how they compare.

I most likely will go with the longer Ranchos, but I have some time to kill till then.
This is what i can tell you from my experience and echoing again...

Out of the box shocks within a price of Fox downward...
Bilstein 5100's
FOX
Rancho 7000
Are by far the stiffest.

The Rancho 5000x is not as stiff as the above.

The Blackmax IMO is the smoothest of the bunch on a TJ.

There is no better/best here...everyone likes something different. A smooth ride to driver "A" might be mush to Druver "B" or too stiff or...._____ and vice versa
 
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This is what i can tell you from my experience and echoing again...

Out of the box shocks within a price of Fox downward...
Bilstein 5100's
FOX
Rancho 7000
Are by far the stiffest.

The Rancho 5000x is not as stiff as the above.

The Blackmax IMO is the smoothest of the bunch on a TJ.

There is no better/best here...everyone likes something different. A smooth ride to driver "A" might be mush to Druver "B" or too stiff or...._____ and vice versa
Thanks, you've been very helpful in these threads.

Have you tried/installed at all KYB Monotube?

I agree that everything about this topic is subjective and opinions differ. I hope I had the budget to try them all, haha. (Mostly because I am a curious person)
 
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I can only find one size for the Monomax, and it's tailored to more of a 4" lift option.
 
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They have two sizes. One for the 3-4" lift range and one for stock.
I've spent hours pouring over all the numbers at shockwarehouse.com and did find a couple potential KYB Monomax fits. Although they weren't specific to the TJ, it looks like I could either add a bar pin to them, or run a bar pin eliminator. However, when I looked at the vehicles they fit, all were heavier full size trucks or SUVs. Somehow this didn't feel right though!

https://www.shockwarehouse.com/news/kyb_measurements.cfm
 
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Interesting to see these comments on the Black Max... We found them to ride surprisingly good on the JL's. Irrelevant to this discussion, but does seem to indicate they were looked at for Jeep applications and not just 3/4 ton pickups...
 
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Depending on how my KYB's run...I may be trying them out too!
I'm not sure why yet, but I also noticed that, overall, the BlackMax shocks tend to have shorter compressed and longer extended lengths than other comparable shocks I was looking at. This really helped with my oddball setup. I'm not sure why that is, so I'm trying to learn more there.
 
I have the Skyjacker nitro shocks and they're garbage. 0/10 would recommend. I hope the blackmax are better in every way. Then again I run a pretty light jeep so I'm sure it doesn't help. If I could run them upside down in the rear I'd be halfway okay with 'em, but I can't so they don't even have that going for them lol.

Front shocks are Skyjacker N8056S
Extended Length: 24.3”
Compressed Length: 14.52”
Travel: 10”

Rear shocks are Skyjacker N8088S
Extended Length: 24.94”
Compressed Length: 14.91”
Travel: 10”
 
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Have any of you light weights put your jeep on a scale? I'd be curious to see just how close we all are for comparison sake.
Mine weighs in at 3940 lbs, no top, no back seat, half a tank of fuel, without my fat ass in the seat.
 
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Have any of you light weights put your jeep on a scale? I'd be curious to see just how close we all are for comparison sake.
Mine weighs in at 3940 lbs, no top, no back seat, half a tank of fuel, without my fat ass in the seat.
No, I haven't, but I have been thinking about it. I need a free hour or so to do it, as I would want to try and calculate my CofG as well.
 
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The Monomax I can speak of ...

KYB makes their own shocks...
The monomax is stout.
I'd say very comparable to the Bilstein 5100.
I don't mind stout, as long as it builds resistance as the travel increases. I'm looking for something soft in the first 1.5" of travel, that can ramp up to control the body as deflection increases. The reason I got rid of the Bilstein's was because they didn't have that soft section before the control section...They were just "jittery" over small stuff. From what I've read, that means there isn't a flutterstack.

I don't know if the monomax has any such thing either (probably not, based simply on price) but I do tend to think that monotube shocks will get me closer to what I want than a twin tube design, simply because they can lighten the valving and use the nitrogen charge to help ramp the shock in compression when needed through the floating piston.


The monotube design has a single cylinder:​

The cylinder is divided into sections: A fluid area and a gas chamber. The piston and shaft move in the fluid portion. It uses a single fluid valve assembly in the piston. The diameter of the single working cylinder and piston valve is larger than in a twin tube even though the outside dimensions of each may the same. There is no need for an air or gas in the fluid area so the valve can operate more responsively and without any aeration or performance fade. The high pressure gas chamber is separated from the fluid area by a floating piston & seal. That provides an expansion area for the excess fluid movement during the compression stroke. On more aggressive movement the floating piston is pushed further into the gas chamber which increases gas pressure quickly and provides additional damping force. Because of its higher performance capabilities, the monotube design is used as original equipment on some vehicles and offered as an upgrade on vehicles that came equipped with the twin tube design.
 
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