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Bump Stop theory

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Old Nov 7, 2013 | 05:12 PM
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Default Bump Stop theory

Well I discovered a few years back that 3rd Gen bump stops are a direct bolt on for a 4th gen and could be had at the local pick-a-part for just a couple bucks. Well those bump stops were still good two years later when I sold the car. Today I went looking for a set to replace the ones on my 98 TA and a buddy needed some for his 01 TA. Well every 4th gen we found the bump stops were slap worn to nothing. Not a trace of rubber on them. Every 3rd gen we found the stops looked great. The rubber wasn't cracking at all on any of them and the rubber was good. My buddy and I can only conclude that they must have used a cheaper rubber on the 4th gens because we couldn't find a single 3rd gen with bad stops on it. The best part is I got both bump stops for $2. Better than the $70-100 for the ones online.
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Old Nov 7, 2013 | 08:01 PM
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You're talking about the rear axle bump stops, correct??
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Old Nov 7, 2013 | 08:20 PM
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Yes, the two rear bump stops that cushion the rear axle from hitting the bottom of the car.
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Old Nov 8, 2013 | 02:23 PM
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So, is there a reason more people aren't using the 3rd gen stops or is there some benefit to spending $100 on polyurethane stop? I know it is a small part that isn't important performance, but just find it strange that no one else has ever really talked about this and that most are still spending all that money on replacement stops when these can be had so cheap.
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Old Nov 8, 2013 | 06:05 PM
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Moving to Suspension in hopes of more post action.
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Old Nov 8, 2013 | 06:27 PM
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I think i payed $20 for my energy suspension bump stops from autozone. I couldnt find a good rubber bump stop for less than triple that.
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Old Nov 8, 2013 | 06:33 PM
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We'll if you have any nice used ones for sale let me know needing some
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Old Nov 8, 2013 | 06:45 PM
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I am thinking about going to the you puul it and grabbing some more and selling them for a profit. Lol.
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Old Nov 8, 2013 | 06:54 PM
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Look into jeep bumbstops. If i remember correctly, theres a certain model and year of jeeps that use bumpstops that fit fbodies. I forgot which ones though.
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Old Nov 8, 2013 | 07:25 PM
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I had used the energy suspension bump bumpstops from a jeep, and havent seen any negatives yet.
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Old Nov 8, 2013 | 07:33 PM
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Originally Posted by Zlow28
Look into jeep bumbstops. If i remember correctly, theres a certain model and year of jeeps that use bumpstops that fit fbodies. I forgot which ones though.
this^^
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Old Nov 8, 2013 | 07:37 PM
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Yeah, but what I am getting at is these are cheaper than the Jeep bump stops, a direct fit with no modding needed, and work just as well. Why go through all that mess when you can just get a set of 3rd gen stops from a junk yard for a couple bucks.
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Old Nov 8, 2013 | 08:31 PM
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IMO, the softer foamy rubber bump stops used on the 4th gens do a lot better job absorbing the impact of the axle tubes compressing them than the shorter hard rubber(or urethane) bump stops do. The trade off is they don't last as long, especially when the car has lowering springs, and they're expensive compared to the hard rubber and urethane bump stops available. So I'll have to agree the hard rubber or urethane BS's are an acceptable compromise if you need new ones.
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Old Nov 8, 2013 | 11:03 PM
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Jeep polys are the go to for $$. And obviously they used cheap rubber because they disintegrate. Next question!
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Old Nov 8, 2013 | 11:08 PM
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That is just it though, the 3rd gen bump stops don't disintegrate like the 4th gens do.
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Old Nov 9, 2013 | 03:32 AM
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3rd gen stops are the best.
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Old Nov 9, 2013 | 06:28 AM
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Originally Posted by 01ssreda4
Jeep polys are the go to for $$. And obviously they used cheap rubber because they disintegrate. Next question!
Yup!!!




I put the Jeep bump stops on my car so long ago, I can't remember when it was!
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Old Nov 9, 2013 | 06:31 AM
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My point was 4th gen stops are junk rubber.
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Old Nov 9, 2013 | 08:50 AM
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Someone correct me if Im wrong, but are the 3rd gen bumpstops actually rubber? 4th gens are a weird foam based material, probably why they disintegrate so easily in comparison.
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Old Nov 9, 2013 | 03:48 PM
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Originally Posted by JD_AMG
Someone correct me if Im wrong, but are the 3rd gen bumpstops actually rubber? 4th gens are a weird foam based material, probably why they disintegrate so easily in comparison.
Yes they're actually rubber... direct bolt-on as well, no need to cut anything like with the polys. And they feel exactly like stock 4th gen stops. I bought used 3rd gen stops off eBay, they still looked new when I bought them and still look new today after many miles... and I do hit them.
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