Bump stop?
Thread Starter
TECH Apprentice
Joined: Jan 2007
Posts: 359
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From: Hudson florida
Bump stop? So I just finished pulling my rearend out of my 99 z28 and saw that my bump stops are destroyed and falling apart. Would you recommend going with the factory style or polyurethane? I think the poly will last longer but I've heard it might be to hard and can cause traction issues. Any truth to this and what would y'all recommend?
Bump stops will have nothing to do with traction issues. Their only function is to stop the axle from bottoming out against the frame if you hit a massive pothole. Jeep poly ones will work just fine, cut the ear off the factory mount they bolt up just fine. Less than 20min job total.
Thread Starter
TECH Apprentice
Joined: Jan 2007
Posts: 359
Likes: 0
From: Hudson florida
I was just told that if you get the poly ones they will be to stiff and if you bottom out the shock it can cause traction issues. I didn't know if there was any truth to that.
Just making sure you know, the bump stops only job to do is to stop suspension travel before something drastic happens; ie: the shock bottoming out because the shock can travel too far without bump stops. That's why bump stops are there, to limit how far the suspension travels and to stop if from traveling after a certain point.
Dorman does apparently make direct replacement bump stops, they are made of foam and expensive. As far as I know no one has tried them out to give a review on how well they hold up. Poly will be stiffer, but you can drill holes in the base of the bump stop to soften the impact. Poly would be ideal as it would hold longer than foam and it's cheaper but you'll have to add washers or grind off the metal lip for it to seat correctly.
Dorman does apparently make direct replacement bump stops, they are made of foam and expensive. As far as I know no one has tried them out to give a review on how well they hold up. Poly will be stiffer, but you can drill holes in the base of the bump stop to soften the impact. Poly would be ideal as it would hold longer than foam and it's cheaper but you'll have to add washers or grind off the metal lip for it to seat correctly.
The OEM style will be a smoother transition onto the bumpstops, poly will be more jarring. Therefore I went w/OEM for my Camaros.
Last edited by libertyforall1776; Dec 15, 2014 at 09:03 PM.
https://ls1tech.com/forums/suspensio...ump-stops.html
the Jeep bump stops I used,instead of metal cutting/trimming I used washers to space them away from frame.
the Jeep bump stops I used,instead of metal cutting/trimming I used washers to space them away from frame.
FYI, the ES/Prothane jeep bump stops are stiffer so yes they are more likely to upset the handling, but they're right about 1/2" shorter than the factory bumpstops so you'll have a little more compression travel before you hit them. For the price and availability compared to soft OEM bump stops, they're a good option.
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