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Rubicon oem steel bumper on Mojave

Bjeepz

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X springs made a big difference in mine.... it wasn't exploding .... but it rode like shit. All gone with the X springs.
Was is sloppy feeling with the extra weight for you? Mine drives great and I drive it hard on rough roads with about 85 extra lbs up front. Did your ride height go back up? If I come across some of the Mojave X springs I'd be down to put them on mine. I forget if the consensus is they're simply longer or the rate is very mildly different.
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ecidiego

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Was is sloppy feeling with the extra weight for you? Mine drives great and I drive it hard on rough roads with about 85 extra lbs up front. Did your ride height go back up? If I come across some of the Mojave X springs I'd be down to put them on mine. I forget if the consensus is they're simply longer or the rate is very mildly different.
All 4 corners rose 1/2". The fronts appeared identical although maybe the coils were slightly thicker I should have measured them. The way I explained the ride was I feel like the shocks weren't working as well and that's why I thought they may have been going out ......but now everything feels perfect again. I think they were just compressed outside of their sweet spot.

The 2021 rears actually had an extra coil eight versus seven on the 2024 X, so the X rears must clearly have a mucher higher rate given they lifted the rear.

The day I put that front bumper on was the day I really started searching hard for the springs. I put the rear Rubicon steel bumper on over a year ago and I didn't really notice much from that. Front wrecked the truck for me. All is well now.
 
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SaiintNick

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All 4 corners rose 1/2". The fronts appeared identical although maybe the coils were slightly thicker I should have measured them. The way I explained the ride was I feel like the shocks weren't working as well and that's why I thought they may have been going out ......but now everything feels perfect again. I think they were just compressed outside of their sweet spot.

The 2021 rears actually had an extra coil eight versus seven on the 2024 X, so the X rears must clearly have a mucher higher rate given they lifted the rear.

The day I put that front bumper on was the day I really started searching hard for the springs. I put the rear Rubicon steel bumper on over a year ago and I didn't really notice much from that. Front wrecked the truck for me. All is well now.
Kind of insane what a narrow sweet spot these Mojaves have. Oh well it is what it is. I never really wanted to change the suspension much. AEV 2" was about all I ever considered. I worry about that now since these Mojave's have a narrow spot. I have noticed that it "bottoms out" on almost any dip at speed. I was a little disappointed to feel that clunk. For now I like this truck on road. We will see what I think of it off road soon.
 

Zachanadandy

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If the "x" springs only make up for the 35lb difference between the plastic and steel bumpers they aren't remotely worth the effort in my opinion. Most people looking to swap bumpers are at least planning to eventually add a winch. It's the same effort and $100-200 more than finding factory x takeoffs to install a quality aftermarket spring and be done with it. The OEM steel bumper is a rip off as well, as "winch ready" isn't actually applicable. Add $150-250 for winch plate and you still have a thin steel bumper with open loop recovery hooks that aren't great. The redrock 4x4 stubby bumper on my mojave is far more stout than the oem, came with led fog installed, has proper shackle mounts, and was $400. Even with the winch it's cheaper than just buying the factory "almost" winch ready steel bumper new.
 

SaiintNick

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If the "x" springs only make up for the 35lb difference between the plastic and steel bumpers they aren't remotely worth the effort in my opinion. Most people looking to swap bumpers are at least planning to eventually add a winch. It's the same effort and $100-200 more than finding factory x takeoffs to install a quality aftermarket spring and be done with it. The OEM steel bumper is a rip off as well, as "winch ready" isn't actually applicable. Add $150-250 for winch plate and you still have a thin steel bumper with open loop recovery hooks that aren't great. The redrock 4x4 stubby bumper on my mojave is far more stout than the oem, came with led fog installed, has proper shackle mounts, and was $400. Even with the winch it's cheaper than just buying the factory "almost" winch ready steel bumper new.
I agree it's not the most cost effective bumper. One thing I always hated was the bolts for the end caps. Every single one I've had always had a bolt or 10 give me trouble especially putting them back on. I don't mind the look of the plastic bumper. What I hate is how much plastic these Jeeps have that is a beating to take of in the heat and blistering sun of Southern Utah. so if I could remove a giant portion of it I wanted to do that. I've added the steel bumper to every Jeep I've owned and none of them were affected at all. I will look at something aluminum if I decide to get a bumper which is pretty far down on the list of wants.
 

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Gvsukids

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Kind of insane what a narrow sweet spot these Mojaves have. Oh well it is what it is. I never really wanted to change the suspension much. AEV 2" was about all I ever considered. I worry about that now since these Mojave's have a narrow spot. I have noticed that it "bottoms out" on almost any dip at speed. I was a little disappointed to feel that clunk. For now I like this truck on road. We will see what I think of it off road soon.
You're probably just hearing the contact of the hydraulic bump stops, which have a longer travel than non-Mojave bump stops.
 

sunrise089

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You're probably just hearing the contact of the hydraulic bump stops, which have a longer travel than non-Mojave bump stops.
Agreed. It’s too bad that some people associate the suspension working as intended as a failure point.

That said, good advice re: bumper options. One advantage of OEM steel is aesthetics. A lot of cheaper aftermarket bumpers have a very ‘modded’ look which isn’t objectively better or worse but is a pretty different look versus OEM steel.
 

Glad Jeeper

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I just replaced my Mojave OE with a OE Rubi steel bumper, Rubi skip plate, Warn winch plate and a Harbor Freight ZXR 12000 winch this past weekend. I did remove the 65’ of 3/8” cable and installed synthetic rope. My front end dropped about 1/4”. Not bad I figure. I still might add a couple spacers to the front.
 

Splenda

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The stupid plastic front bumper weighs about 40 pounds, and the Mojave skid plate weighs about 20 pounds. I don't see how the stubby steel bumper weighs any less.
 

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Zachanadandy

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I bought a warn winch and warn winch plate. The built in winch plates on many many bumpers are not engineered well and put too much stress in wrong place. The winch plate should be designed to protect the frame ends and put little or no stress on the bumper. The warn does so based on my research.
It was plenty sturdy enough to snap the 1/2" pull rope after we broke the 10k pound tugger without the slightest deflection. We were pulling hard enough that the Jeep was sliding forward with all 4 tires locked up on dry pavement. That rope has an 11k pound break strength and we snapped it several times. Weird how only after Jeep introduced their fake "winch ready" bumper that requires a separate winch plate did anyone start the crazy thought process that my winch shouldn't put any stress on my front bumper. For 80 years most winches on most vehicles were bumper mounted. If you buy a poorly designed bumper sure you might twist it in a hard pull but every winch plate I've ever installed also bolts to the front frame horns so the idea that the stresses are somehow different because it's a separate piece mounted to the same location (yes they have extra bolts through the frame, but it's not like they aren't mine to the bumper studs) is lost on me.
Jeep Gladiator Rubicon oem steel bumper on Mojave 20250211_091056

Jeep Gladiator Rubicon oem steel bumper on Mojave 20250211_091109

Note it's not under full tension in the pics and everyone was clear and I had a winch blanket over it when pulling.
 
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SaiintNick

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You're probably just hearing the contact of the hydraulic bump stops, which have a longer travel than non-Mojave bump stops.
I’m sure that what the noise is, but it’s still annoying. Rather have regular quiet bumps tops. I wonder if the Metalcloak ones would work?
 

Zachanadandy

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I’m sure that what the noise is, but it’s still annoying. Rather have regular quiet bumps tops. I wonder if the Metalcloak ones would work?
Work? Sort of. You'd have to remove the hydraulic bump stops and fabricate some way to mount the steel cup that holds the standard bumpstop. That's a lot of work to seriously downgrade your bump stops though. You'd be better off adding a better/taller front spring to keep the axle from contacting the bump stops as often while retaining the function of hydraulic bump stops.
 

Bjeepz

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Work? Sort of. You'd have to remove the hydraulic bump stops and fabricate some way to mount the steel cup that holds the standard bumpstop. That's a lot of work to seriously downgrade your bump stops though. You'd be better off adding a better/taller front spring to keep the axle from contacting the bump stops as often while retaining the function of hydraulic bump stops.
When I added a 1inch inch coil spacer to my last Mojave the clunk from the bump stop went away. One the new Mojave I have 1.5 inch coil spacers up front, 1.5 inch Curries shock extensions and a 1 inch bumpstop extension on the axle, no clunking! Anyway this leads me to think that simply adding a 1/2 inch coil spacer might be just enough to get rid of the clunk.
 

SaiintNick

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When I added a 1inch inch coil spacer to my last Mojave the clunk from the bump stop went away. One the new Mojave I have 1.5 inch coil spacers up front, 1.5 inch Curries shock extensions and a 1 inch bumpstop extension on the axle, no clunking! Anyway this leads me to think that simply adding a 1/2 inch coil spacer might be just enough to get rid of the clunk.
Thats way easier than replacing bumpstops.
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