I know this doesnt really help, but when I replaced my bump stops on my Cobalt SS/SC each stock one was $75. So $36 each for Pedders really isnt that bad (can only imagine they are better than stock- dont really know how but you get the pt)

 

Or buy these at napa.

http://www.napaonline.com/MasterPag...Code=NCP&PartNumber=2654120&Description=Strut+Bumper+Bellows+-+Front+Suspension

 

That stupid boot doesn't fit our cars. It's universal of some sort.

Mikey, since you're not driving the car, take the struts off, disassemble them, and inspect the bump stops. Maybe they will be perfectly fine. My stocks ones looked great after 50K.

 

I think the DIY community really do not check these. The last 20 or so GTOs that I have done, I have not seen one that was not damaged. This is why we have added the bump stops to all systems.

The bump stops are the same on the G8. Mike Haddad's G8 had the worse bump stops I have ever seen. Everyone who knows Mike knows he is one of the most aggressive drivers out there.
and he only had 6k miles on them when we did his Track II on his G8

Here is what the Pedders units are, and think they are a much better value than OEM

4358 GTO Bump Stop Front Requires 2 packages $36.12
4358 GTO Bump Stop Front Requires 2 packages $36.12

thanks
mike
dms

 

i have the napa bump stops with the stock boots. works just fine

 

Cool, thanks flip.
I'll see what the dealer says first.
Then I''ll hit up NAPA.

 

When I changed my struts at 30k miles, my bumpstops looked perfect.

 

Looking at them, unless you are 100% knowlwdgable on what they look like or should look like, are often very deceiving. You need to lift up the outer end

Here is an extremely bad one that had about 6500 miles I think but driven seriously thru lots of mountain driving

Out of the last 15 GTOs that I have done, all were damaged. This is why we are now including bump stops with all packages involved with the dissassembly of the front struts

mike
dms

 

Were all of the bump stops off of stock suspended cars, or were any of them "pedderized"? I have a theory that stock springs destroy the bump stocks (they bottom out often and the bump stops serve as defacto springs).

 

I have a theory that stock springs destroy the bump stocks (they bottom out often and the bump stops serve as defacto springs).

It's a good theory, that. The OE ride height GTO only has 60-70mm
front suspension travel. Combine that with soft springs and the bumpstops
get used a lot. Combine it with soft aftermarket lowering springs and
the bumpstops still get used a lot.

It's preventable by using taller and/or stiffer springs. But it's not a
problem per-se - it's effectively a progressive spring. Quite a lot of
cars are designed that way.

I have my doubts about the way in which the OE bumpstops are
oriented, actually. They have a flat end and a pointy end. The
pointy end nicely matches the cupped washer at the top. The flat
end of the bumpstop nicely matches the top of the shock. But
they're installed the other way up, so the cupped washer cuts into
the flat end.

 

in process right now of replacing the strut mounts. The guy i bought them from sent me a new pair of bump stops, which are not only longer, but more concerning to me they are a smaller diameter? the old ones are toast, so i plan on installing these new ones, but just seems strange they don't fit snug in there like the originals. am i missing something here? i guess once everything's bolted in place there's really no side load or anything on the bump stop, so should be ok.

and as pointed out above by flink, i agree the bump stops look upside down. i'm putting the cupped side up to mate the cup washer and the flat side down to mate the flat side of the shock. it's the way these bump stops are intended, as if you look inside, the bore is larger toward the flat side, which makes sense as threads are toward the cupped side (smaller bore in bump stop). time to go get greasy again...

 

I changed mine about a month ago: they came with the Pedders tire rub kit. After 34K miles of relatively mild driving (compared to what I've seen), the bump stop on one side was damn near shredded and the lip of the other one on the other side was just beginning to split.