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

FWIW, he's coming from a worn out set of Rubicon Express (monotube) shocks.
Those were re-branded Bilstein 5100's. The valving might have been slightly different.
 
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I emailed KYB customer service yesterday about the stiffness of the shocks... I've copied and pasted my email and response, below:


Hello,

I recently installed a set of KYB Monomax shocks on my 2004 Jeep Wrangler. I used the 565096 / 565097 combo because I have a 4" lift. My concern is that they ride VERY stiff. I'm not getting very much compression out of the shock at all. I have placed a zip tie on the shock shaft, and for normal driving, I'm using 2" of shock travel or less. I do not have very many miles on them yet (less than 150), and I know shocks have a "break-in" period. So, I'm wondering if I need to put more miles on them, if they might be defective, or if they are simply too stiff? One other thing to note, When I jack the vehicle up, the body will lift with each stroke of the jack. It quickly settles back down, like it takes a while for the shock to adjust. I want to like these shocks, but if they aren't defective and they do, in fact, ride this stiff, I'm afraid I'll have to return them.

Thanks for your help

Mike


Hi Mike,




From your description, it sounds like the shocks are working as designed. MonoMax units are high performance shocks that are designed to work well when loaded down or off roading a lifted vehicle. If you are judging the shocks with no load in the vehicle and mostly on commuter type roads, they will feel firm.



They may need to settle on the vehicle: you can raise the vehicle off the ground, loosen the upper mounting points a little bit (do not fully remove), then set the vehicle fully on the ground and tighten them back up to OEM spec. This will help the shocks settle on the vehicle and may or may not soften the ride, but aside from that, shocks don’t typically break-in and get softer unless they are wearing out. It is unlikely the units you have are defective.



Regards,

Technical Support

KYB Americas Corporation

[email protected]


I have started the return process, based on this response. Next up on the list is the black max! It's for science....
What's so funny?
 
Just to add my two cents on the Ranchos, I really can't see where everyone was raging about them. They are somewhat equivilent to my 10 year old Bilsteins, but a little squishier. I'm not a fan of running can down either. I put less than 10 miles on them and I put my Bilsteins back on until I outboard here soon. Two thumbs down from me and they will be for sale shortly.
I had Bilstein 5100's before I had the Rancho 5000X on my rig. The Rancho's were definitely softer from day 1. However, I noted that once you got to 45mph, there was no noticeable difference between the Bilstein 5100's and the Rancho 5000X. This was back in 2018 when I first noted this on the forum in a number of threads. Compared to the stock shocks on another TJ I own, the Rancho's are noticeably better. Compared to the KYB monotubes I have on another TJ, the Rancho's are noticeably better ride. I'm getting rid of the Rancho's on my rig and trying the Fox Savvy Valved shocks.
 
It's actually very difficult to set up a true scientific experiment (meaning bulletproof, only one factor different with a control), because, while the shocks may be the only thing you change, the shocks you change from usually do not have the exact same amount of compression and extension and overall length, so you are not only comparing valving, but also other factors which affect ride quality that are tied in to up and downtravel. Since there is no control group, it's mainly a subjective discussion. That doesn't make it meaningless, just no hard data.
 
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You're saving me all kinds of monies Mike. I'll wait for you guys to get the skinny on the Black Max shocks, then make my decision. I have a set of JKS shocks collecting dust, so I can say I at least contributed to this so called science experiment, lol!
 
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I had Bilstein 5100's before I had the Rancho 5000X on my rig. The Rancho's were definitely softer from day 1. However, I noted that once you got to 45mph, there was no noticeable difference between the Bilstein 5100's and the Rancho 5000X. This was back in 2018 when I first noted this on the forum in a number of threads. Compared to the stock shocks on another TJ I own, the Rancho's are noticeably better. Compared to the KYB monotubes I have on another TJ, the Rancho's are noticeably better ride. I'm getting rid of the Rancho's on my rig and trying the Fox Savvy Valved shocks.
I have tuned Fox I'm my shop waiting to go on...along with a dozen other things. The only thing I don't have is more time.
 
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I have tuned Fox I'm my shop waiting to go on...along with a dozen other things. The only thing I don't have is more time.
Time is a precious commodity. I'd help you out if I lived anywhere near.
 
Sorry if this has already been said. No time to read all 13 pages.

I ordered all new 3 in lift Soft Springs for my 84 Toyota truck. I used Rancho Shocks. The ride was terrible. As it turns out, the shocks were overkill and ruined the ride.

I would go with the kyb.

My son's 73 Blazer had Rancho shocks. I switched them to Monroe Gasmatics. Way better ride.

Disclaimer: I don't know if the correct Rancho shocks were ever ordered...
 
My point is be very careful about the shock selection. It can ruin your ride if you don't get the right one. That is regardless of brand.
 
Sorry if this has already been said. No time to read all 13 pages.

I ordered all new 3 in lift Soft Springs for my 84 Toyota truck. I used Rancho Shocks. The ride was terrible. As it turns out, the shocks were overkill and ruined the ride.

I would go with the kyb.

My son's 73 Blazer had Rancho shocks. I switched them to Monroe Gasmatics. Way better ride.

Disclaimer: I don't know if the correct Rancho shocks were ever ordered...

Which particular Ranchos? In this thread, we're mostly interested in comparing the RS5000X series.
 
It’s all just a bunch of group think and so-called science experiments. 😂
Agree. Call the manufacturer of whatever shock you want to go with and discuss your application with them. Putting an overkill shock on your Jeep will ruin the ride. I don't have a recent set of new shocks for comparison (still factory on the LJ and it rides great) My lift kit shows up in August. Will let you know how it rides then.
 
It’s all just a bunch of group think and so-called science experiments. 😂
.... So when a person actually runs the different shocks he's giving an opinion about still counts as group think?

The guys that haven't run anything else and defending their single experience as best is what I would consider group think ....