Hydraulic Bump Stops

[firedude]

I also have the MC bumps and they are worth the upgrade but you really shouldn’t be in the bumps that much. What is your uptravel now?

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[old mike]

(https://jksmfg.com/products/front-a...mp-stop-acos-pro-wrangler-jl-and-gladiator-jt); but, these commenters are right that you really should be able to rely on sufficient up travel for your use rather than consistently engaging the bump stops.

 

[Somefun]

I’m not into them real often but we’ve just stepped up our wheeling to be more than a fire road. Hitting some real nice trails and I think it’s more of a spring rate issue with the current 2” lift. I’m picking up a Clayton 2.5” this week and they have a stiffer rate so I’m sure that will help. I also just pulled the trigger on the Synergy bump stops for a bit of added protection. I wanted to do it all at once and didn‘t want to have to go back in after i did the lift.

 

[Remorseless]

I haven’t but maybe I need to? I would like to improve what I have at the same time I install the new lift. Have you tried them?

I ran the predecessor to the current gen bumps in my JK, the Teraflex SpeedBumps (just a progressive foam bump in a hydro bump form factor). Progressive foam bumps definitely help ease the end of travel. I've also just bought the current gen progressive bumps for my JL that fit into the regular jounce tube with no cutting.

I’m not into them real often but we’ve just stepped up our wheeling to be more than a fire road. Hitting some real nice trails and I think it’s more of a spring rate issue with the current 2” lift. I’m picking up a Clayton 2.5” this week and they have a stiffer rate so I’m sure that will help. I also just pulled the trigger on the Synergy bump stops for a bit of added protection. I wanted to do it all at once and didn‘t want to have to go back in after i did the lift.

Spring rate is an issue, yes, but I'd also recommend turning the shocks to the stiffer setting for the beach specifically (not really the trail, you generally want a little softer when doing technical wheeling). You'll feel more of the little bits of chatter and washboard on the beach with the shocks set to a stiffer setting, but the big hits get absorbed much easier.

Out of curiosity, got a link to the synergy bumps?

 

[Somefun]

I ran the predecessor to the current gen bumps in my JK, the Teraflex SpeedBumps (just a progressive foam bump in a hydro bump form factor). Progressive foam bumps definitely help ease the end of travel. I've also just bought the current gen progressive bumps for my JL that fit into the regular jounce tube with no cutting.



Spring rate is an issue, yes, but I'd also recommend turning the shocks to the stiffer setting for the beach specifically (not really the trail, you generally want a little softer when doing technical wheeling). You'll feel more of the little bits of chatter and washboard on the beach with the shocks set to a stiffer setting, but the big hits get absorbed much easier.

Out of curiosity, got a link to the synergy bumps?

Sure!

Teraflex Jeep Wrangler 3-Inch Stroke SpeedBump and Progressive Front and Rear Bump Stop Kit for 0 to 4.50-Inch Lift 1958350 (18-23 Jeep Wrangler JL) - Free Shipping (extremeterrain.com)

 

[Remorseless]

Sure!

Teraflex Jeep Wrangler 3-Inch Stroke SpeedBump and Progressive Front and Rear Bump Stop Kit for 0 to 4.50-Inch Lift 1958350 (18-23 Jeep Wrangler JL) - Free Shipping (extremeterrain.com)

FYI, those require cutting the jounce tube and are still just foam bumpstops, just in a can.

They're effectively the same as these that don't require cutting the jounce tube:

JL: Progressive Bump Stop Kit – Front & Rear (0-4.5" Lift) (teraflex.com)

 

[Somefun]

FYI, those require cutting the jounce tube and are still just foam bumpstops, just in a can.

They're effectively the same as these that don't require cutting the jounce tube:

JL: Progressive Bump Stop Kit – Front & Rear (0-4.5" Lift) (teraflex.com)

Yes but the others have more room for adjustments.

 

[Remorseless]

Yes but the others have more room for adjustments.

Those are the same ones I ran on my JK, and yes you can space them down slightly for a taller lift (or if you cut too much of the jounce tube off), but at 2.5" of lift you'll be running them in their shortest config and just use axle-side bumpstop spacers to set bump - there's not enough vertical adjustment to do your bump tuning with the SpeedBump, generally speaking.

You also can't adjust the damping or anything like that - they're foam, there's no tuning to how much damping force there is. You can only space the bump up or down in the jounce tube.

The reason I stopped running those is a combo of the lack of actual adjustability mentioned above, plus I hit a big pot hole and it rammed the shaft into the speed bump and apparently full on inserted it into the foam, sticking the shaft inside the can. When removing it I discovered how much of a pain in the ass it is to get them out since you have to silicone them in place with RTV.

IMO, the bumps that simply pop into the jounce tube are way more user friendly for install, maintenance, replacement, and you end up adjusting bump setting at the axle anyway for either of them.

Basically, those SpeedBumps were a purchase I regretted down the line. If I was going to go with that form factor, I'd pay for a hydro bump that is legitimately able to be tuned. Otherwise, stick with the stock jounce tube, IMO.

 

[Somefun]

Those are the same ones I ran on my JK, and yes you can space them down slightly for a taller lift (or if you cut too much of the jounce tube off), but at 2.5" of lift you'll be running them in their shortest config and just use axle-side bumpstop spacers to set bump - there's not enough vertical adjustment to do your bump tuning with the SpeedBump, generally speaking.

You also can't adjust the damping or anything like that - they're foam, there's no tuning to how much damping force there is. You can only space the bump up or down in the jounce tube.

The reason I stopped running those is a combo of the lack of actual adjustability mentioned above, plus I hit a big pot hole and it rammed the shaft into the speed bump and apparently full on inserted it into the foam, sticking the shaft inside the can. When removing it I discovered how much of a pain in the ass it is to get them out since you have to silicone them in place with RTV.

IMO, the bumps that simply pop into the jounce tube are way more user friendly for install, maintenance, replacement, and you end up adjusting bump setting at the axle anyway for either of them.

Basically, those SpeedBumps were a purchase I regretted down the line. If I was going to go with that form factor, I'd pay for a hydro bump that is legitimately able to be tuned. Otherwise, stick with the stock jounce tube, IMO.

Gotcha, I wanted to buy the Fox for the front & rear but they are out of stock till end of January or February and I have my jeep going in for a re gear (going to 4.88) and installing the new Clayton 2.5 Overland lift so I wanted to do it all at the same time.

 

[AccuTunedJL]

I didn’t think they were for big hits? I don’t go ripping in the Rubicon. It’s more of a trail ride, rock crawler and beach blaster. Noting higher speeds. I don’t put the Falcon‘s on the firmest setting I was in the middle with them. I honestly never tried the firmest setting. I thought it would bounce me out of the jeep! Lol

They are definitely intended for higher speed and aggressive driving. Most desert race vehicles will have these in addition to a bypass shock, however those are not IFP air bumps like these OEM kits offer. Adjusters are on shocks for this exact reason, so I would definitely recommend playing with those settings.

 

[pnut]

Been wondering why more guys aren’t running true hydraulic bump stops like the Fox 2.5 or King stops? My wife and I had her Rubicon down in the OBX back in October and while crossing the ruts with just a little bit of weight in the Jeep we kept hitting the bump stops driving me nuts. Last weekend we were with Maine Line Overland and Ridgeback guide services wheeling in VT and i hit them a few more times. I‘m upgrading the lift kit from a 2” Dyna Track to the Clayton 2.5” overland for a bit more height but also the higher spring rates. But I’ve been seriously considering added the Fox or King bump stops to do it right the fist time. The problem is they are way out of stock at this time.

I ran the Teraflex speed bumps on my Hemi powered JK with a long arm on the dunes before I sold it. Having progressive rate bump stops was a complete game changer, bigger than tires, or even the long arm as far as impact of upgrades. I know speedbumps being fancy foam in a canister are hardly as good as hydraulic, but it tells me exactly what you are saying, that true hydro bumps would be a game changer to another level.

On my 392 JL, I intend to add them in the future (again, also for dune running).

 

[Somefun]

I ran the Teraflex speed bumps on my Hemi powered JK with a long arm on the dunes before I sold it. Having progressive rate bump stops was a complete game changer, bigger than tires, or even the long arm as far as impact of upgrades. I know speedbumps being fancy foam in a canister are hardly as good as hydraulic, but it tells me exactly what you are saying, that true hydro bumps would be a game changer to another level.

On my 392 JL, I intend to add them in the future (again, also for dune running).

Yeah I wanted the full Hydraulic but the wait was longer than I wanted and unfortunately I don't get the go wheeling a real lot so I went the Teraflex route. Hoping I like them.

 

[Roky]

@AccuTunedJL , Hey Mike, is the rubber bump stop on the DSC really help the shock from topping out, or how effective is it? I’m running longer shocks for maximum droop, we mostly climb/ crawl not much high speed stuff. But occasionally we get it going down the trails, potholes, washboard, etc.., and sometimes we get that hard hit. I’ve got 5” up travel, using 4.75” of it with the way I’m bumped…..Sorry OP didn’t mean to sidetrack….

 

[AccuTunedJL]

Off topic, I will send you a DM

 

[dcm80401]

So when your wheeling you never get that bump stop thud right? Just feels smooth the whole way through the travel?

Yes. Smooth all the time through travel.

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