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Rear Bump Stop

5.3K views 22 replies 12 participants last post by  enginman78  
#1 ·
I replaced my rear pads this past weekend and noticed that both rear bump stops are crumbling and broken. I could not find a replacement from any of the parts sites. Is Timbren the only option? Seems pricey for some rubber. Also noticed my rear shocks are not looking great but have not failed yet.

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#2 ·
#3 ·
@Ekalb
The bump stops were meant to be part of the lower control arm is why you do not seem them separately...
And if you look at the lower control arm it says it's discontinued, however there is a ALT: 52510-THR-A02 which does show-up at Honda Dealers. But you cannot by the OEM bump stops separately from the lower control arm (funny the upper control arm for the front end is the same part number.
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#4 ·
If you look at off road vehicle builders sites, you’ll find many bump stops in different materials and sizes that are all bolt in, usually with a single bolt. You may need to work at removing the remainder of your mutilated bump stop and possibly drill a hole. It’s definitely doable.
 
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#7 ·
I reached out to Timbren and they said the full part number for Odyssey's with softer rubber would be HRDD5G - C/W A00525-55AG00. They recommended ordering them from Michigan Truck Spring for US customers since they are familiar with custom orders. It is an expensive option for just bump stops but beats $1000 for control arms.
 
#8 ·
Not directly related but....

I also have a 2017 Mercedes E400 wagon (not bragging; bought it used at 7 years old and only 51K miles - the depreciation on those things is unbelievable). I was getting a thunking noise from the right rear wheel area; I live on a dirt road. My guy, who has been a M-B mechanic for 30 years diagnosed it as a worn upper shock mount. M-B won't sell just the shock mount. Have to buy the entire shock assembly at $300 per side. Similar to the bump stop issue being part of the control arm in this Honda. He talked me out of replacing both shocks and installed a fender washer on each of the 2 bolts attaching the shock to the chassis. Problem solved.
 
#15 ·
@guydeso99
I know it's a shame Honda does not make them. And just to sell them on the control arm is a rip-off.
I have looked at the bottom of the control arm under the bump-stop to see if they are bolted on.
If, they are bolted on, perhaps you could take it off and measure the outside diameter and height of it and the bolt hole diameter size as well.
If where you live at in the city, do you have a true parts warehouse for that city, in other words that place dispenses out parts to all the other auto parts stores in the city and possibly in 100 mile radius. If you do, I would take it to them or the picture with measurements to show the parts counter person what it looks like and see if they can do some looking in their inventory if the have something that is close to it. Anything that is close in measurement should work. A good company will carry Moog suspension parts and might be able to come close to it. I wish I could tell you the information myself, but my bump-stops are fine at 6.5 years with almost 62K miles on it.
I just recently had a person drain the engine oil for me and he said all rubber items on suspension looked fine. I have 3 operations on my back, both hips replaced and right knee replaced, so getting down on the ground is almost over for me especially on anything under the vehicles. I can still work on my Vyper chair to pull tires and do brakes and wash the ODY & Toyota, but it gets harder to do this work each month. Don't get old, OK maybe don't do stupid thing like jumping off loading docks or stair wells to save time, it will cost you in your older life.
 
#16 ·
In Honda's defense, unless the part in question is defective and subject to warranty replacement, by the time the bump stop is unserviceable, the end bushings are almost certainly ready for replacement. If I were doing it, I would replace the uppers while it was apart. Shock absorbers and sway bar rubbers should be strongly considered. And would you really do only one side of the van? Replace everything you touch. DIY is not part of their decision-making process. Consider the cost of labor to remove the control arms, press-out the end bushings and bump stop, press-in new end bushings and bump stop, and reinstall. Shop time for the removal and installation of the bushings and bump stop is high enough to consider replacement of the entire control arm with bushings as a unit. Toyota makes a lot of suspension parts that bolt together. It's ugly and heavy, but it may save money for jobs like this. It's a different design philosophy.
 
#17 ·
There’s also 4WD and off-road shops that have access to many kinds of bump stops.
 
#18 ·
If, they are bolted on, perhaps you could take it off and measure the outside diameter and height of it and the bolt hole diameter size as well.
They are not bolted on. The Honda bump stops just press in to a recess cast in the aluminium control arm. There is a small lip that the bump stop engages with.
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I believe the Timbrens are the only available replacements (without buying the whole control arm).

So what can you do if you want to keep your Odyssey with only Honda parts for resale value?
I know what you mean, but on the other hand I don't think aftermarket bump stops will really hurt the resale value.
 
#19 ·
Hi, I tried to remove my bump stops to install helper air boosters. Watched a YouTube video and the guy said use a 14mm stocked to remove the bolt. I tried a 14, could not engage the head of the bolt. Tried a 15 and a 13 as well as American sockets close to 14mm. Nothing worked. Took a picture with my phone and I can see the hex but it looks like the bolt head is buried in a washer under the head (i.e. the washer is curled up around the outside). Any suggestions on how I can get this 🤬 bolt out? I'd appreciate any suggestions. If you want to reply just to me, it's enginman78 at gmail Thanks!