Bump stops

[saltydogg]

So next weekend I'm going to install a set of Steeda pro-action struts/shocks (non-adjustable) and BMR SP763 springs. My car is strictly a daily driver, no track/drag use.

I was going to purchase the Steeda polyurethane bump stops rather than trimming the factory ones but then I read one of the few reviews I could find (on American Muscle's site) and the reviewer thought they were too hard.

What's the general consensus about trimming the factory stops vs. replacing with something after-market? What other aftermarket options are out there?

Thanks!

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[RonStang6G]

You will get better ride quality with the Steeda bump stops. It is true that they are a harder material but because they are the correct length you will hardly ever actually hit them. I have changed out my springs several times trying different bump stops each time. I thought that the Ford Performance bump stops would give a better ride quality because they are softer than than the stock bump stops but they did not improve the ride quality. The last time I change the springs I tried the Steeda bump stops and the gave the best ride quality by far over the stock & the Ford Performance bump stops.

 

[saltydogg]

You will get better ride quality with the Steeda bump stops. It is true that they are a harder material but because they are the correct length you will hardly ever actually hit them. I have changed out my springs several times trying different bump stops each time. I thought that the Ford Performance bump stops would give a better ride quality because they are softer than than the stock bump stops but they did not improve the ride quality. The last time I change the springs I tried the Steeda bump stops and the gave the best ride quality by far over the stock & the Ford Performance bump stops.

For the Steeda bump stops, did you use both pieces front and rear or just the base? From what I can tell with the SP763 kit I should use both (or the tall) configuration.

 

[Nagare]

For just about everything that is not stock height, the short stack is preferred.

I know Kelly recommends cutting the stock ones, so I'd say go with the short stack here too.

 

[whalesalad]

Reviewer thought bump stops were too hard?

Bump stops are not intended to be hit. They are a last resort piece designed to protect the shock from bottoming out completely.

There should be no consideration for comfort whatsoever when deciding on your bump stop. It is not a part designed to influence comfort. It's designed to protect your equipment when it's compressed to its' limit.

Steeda bump stops are great. I have them. I cut my OEM ones the first time I did suspension work and that works fine as well... but the Steeda parts will surely last longer. Regular foam bump stops are known to degrade over time.

 

[Nagare]

I've seen a lot of mention of Eibach including the bumpstops in their rate estimates so I wouldn't say that it is always the case for not intended to be hit. I don't know if it is mentioned in their documentation or not, but I do know that I was riding on the ones they included with the Sportline springs.

 

[whalesalad]

I've seen a lot of mention of Eibach including the bumpstops in their rate estimates so I wouldn't say that it is always the case for not intended to be hit. I don't know if it is mentioned in their documentation or not, but I do know that I was riding on the ones they included with the Sportline springs.

Riding *on* the bump stops? That implies the damper is completely compressed all of the time. It doesn't makes sense.

 

[Nagare]

Not completely compressed *all* the time but the springs are short and the bumpstop isn't significantly different than stock and there was a lot of wear on them in the two weeks or so I had them on before visiting Steeda.

Product listing for them even includes:

Spring rates for the S550 Mustang Ecoboost/V6 Sportline kit are measured as a system, including 10mm of bump-stop deflection. That added bumpstop rate contributes to the final rate of the system, the higher number listed below:

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