ThinblueMN
New member
Just ordered them off amazon. Can’t wait
Energy Suspension 8.9104R rear bump stops in place of front bump stops
- Thread starter Akkording
- Start date
FWIW - the rears could be upgraded to the GX460 rear bumps. GX air spring models don't have internal bumps in the air springs, so they put a larger and softer bump on the frame rail. They are around $50 ea.
Is there two different part # for LH and RH side? How are these been working for you?
TheWraith
New member
Hello,
James here from Energy Suspension.... very cool to see forum members making their own adaptations!
Something to look for in the future, this is still a little while off, but the new Rockflex bump stop is going to be available for 4Runners around the end of the year. It's a progressive rate bump that will give you the same rate as an MCU bump at first, then gradually stiffen up. You won't feel a hard hit, rather, a smooth engagement.
We have already released the bump for the Jeep JL, it has a molded in metal washer base that will allow you to use it with almost any single-bolt application. We have plans to release it for Toyota later this year, but early adopters have already fitted them to the 4Runners.
Part number has been released, but I'm not at work right now. I'll have to post it later. It just barely arrived to market.
Here's a video from the SEMA show for their debut on the JL.
<iframe src="https://www.youtube.com/embed/JC_dJKE_epY" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen="" width="560" height="315" frameborder="0"></iframe>
The very next adaptation of this part will be a Toyota IFS version and a rear two-bolt adapted version. The kicker will be the new rear coil bumps featuring rock-flex, that will fit 3rd-5th generation 4Runners.
We also already make high-articulation 3-piece rear arm bushings for 3rd and 4th gen factory arms, I've got approval to bring in a 5th gen to our facility for R&D sometime this year.
I managed to get hold of some of the JL prototypes, lobbed off the top of them, then tested them out on my 3rd gen IFS at the Hammers with great results. Can't wait to get an IFS specific version to market!
I'm soo happy of Energy Suspension front ... I want the same for the rear. Wheres the rear ??? You mentioned this at the end of the year in 2019 ... Any news ???
TheWraith
New member
Is it made by Energy Suspension or Eibach ???
Akkording
Member
Ryan from Eibach posted their new rear adjustable springs on their Eibach suspension thread, it has pictures of their product that matches their website. It is possible they had help from ES but I will let them confirm that. The 3rd gen in the picture from BB with the demo front bump stop design looks very similar in shape to the rear bump stop Eibach sales just without the included extension plate. I don't know why I'm just now noticing that. I have the rear Eibach BS installed, they said 6 months ago they would sell it separately on their website outside of their kit.
Battle Born was just putting in their plug, for their shop. they have some good sales, I bought my PC back then from them for $150, good folks.
Battle Born was just putting in their plug, for their shop. they have some good sales, I bought my PC back then from them for $150, good folks.
TodiN
New member
Looks like there is a RH part: 48306-60201 : 48306-60201 - Genuine Lexus BUMPER SUB-ASSY, REAR SPRING, RH
ChildrenOfBodom
Moderator
Akkording
Member
When will your front bump stops be available for sale for the 5th gen?
ChildrenOfBodom
Moderator
I left Energy Suspension in January 2020, so I don't know the answer to that.
Before I left, we had rate tested the JL bumps and found that they're literally the perfect rate for 4Runners.
At this rate, I will bet that ES will just reuse the same bolt-in style JL bump as previously shown and then just include a couple of bolts and call it a 5th gen 4Runner set. In that case, I'd just buy the Jeep bump set and use my existing 4Runner hardware to mount them.
Jeep set includes 4, but only 2 will be usable, as the others are not meant to be bolted in.
Really interested in trying these. Are they the same height as OEM when compressed? I know they are longer than OEM, thus the damping. Can't find any number what they are like fully compressed.
I am actually looking to use bump stop to limit my up travel so tires don't rub the top wheel base. Is this possible?
dezertbomber
New member
If looking to limit the rear up travel, use a spacer like what Toytec sells. Replacement bump stops aren't intended to limit up travel, just make it smoother. They might limit it unintendedly, but that's going to be an unpredictable amount until you mount and measure their effect.
43006 - Toytec Rear Aluminum 2" Bump Stop Kit (07+FJ/03+4Runner)
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If looking to limit the rear up travel, use a spacer like what Toytec sells. Replacement bump stops aren't intended to limit up travel, just make it smoother. They might limit it unintendedly, but that's going to be an unpredictable amount until you mount and measure their effect.
43006 - Toytec Rear Aluminum 2" Bump Stop Kit (07+FJ/03+4Runner)
I see. Is it possible to do aftermarket bump stop with the metal spacer? I do want softer bottoming out.
dezertbomber
New member
I believe it would since it allows the stock bump to mount properly. Basically need the surface area under the bump and the mounting holes, which the block looks to retain.
I know this is the Energy Susp thread, but I have been impressed with the DuroBumps setup front and back, and they stand behind their product. For the price, the ES front bumps would be worth a try though!
little_titan
New member
Installed on my 4th gen 2008 4Runner, direct fit.
Just installed the energy suspension bumpstops on my front control arms and i must say that I am impressed. For the price, i dont think you can beat it.
I measured the heights of both bumpstops for those who might need the data
OEM: ~ 1 5/8”
Energy Suspension: ~ 2.5”
(Sorry unable to load pics from iphone)
Just installed the energy suspension bumpstops on my front control arms and i must say that I am impressed. For the price, i dont think you can beat it.
I measured the heights of both bumpstops for those who might need the data
OEM: ~ 1 5/8”
Energy Suspension: ~ 2.5”
(Sorry unable to load pics from iphone)
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mrblah
Senior Member
me too...i still won't pay more than i have to if i know there are less expensive (aka. CHEAPER) alternatives out there.
These have served me well, and are still on my vehicle.
I wont buy durobumps either, even though they probably work well.
From a design/engineering aspect and quality of materials, timbrens and ES made more sense than the durobump design.
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Akkording
Member
Timbrens got too proud as well. I missed out on a rear used set for sale for $100. If I were to start over I would of gone with the oem GX rear bump stops ($100 a set) due to the square curvature for that positive contact point over the center of the axle. My rear Eibachs ($125 then) work but the round contact point only hits the front half of my axle. It might not even be that big of a deal after all, maybe it was designed that way. I would love to see pictures of the axle contact print on someone who upgraded to the taller stock GX bumps stops to confirm my rambling.
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