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Old 06-15-2012, 08:44 PM   #1
goldhawk
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Bump stops?

I'm installing Koni Sports (Yellows) in my front struts.
I have just thought now that I dont have bump stops... the Koni page says they recommend bump stops - of course theirs are really expensive for just a piece of rubber http://www.summitracing.com/parts/KON-7034540000/

So, I'm wondering if I can skip them.
I'm wondering if just the spring coils compressing against eachother will stop the bump stop from even being effective.

The springs I'm using are FK - 60mm drop.

Has anyone else omitted bump stops??
Or is its not worth it to save damage to the shock?
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Old 06-15-2012, 09:17 PM   #2
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what do you think? why not take a chance and find out? how much did it cost you for your set up and time? now you want to risk damaging them by bottoming out?

it's this type of thinking that is beyond me. I knew guys who would go out and drop 10k on a sport bike but wouldn't drop a grand or two on leathers and equipment only to trash the bike and then trash themselves because they weren't protected. you can fix a bike but you can't replace body parts.
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Old 06-16-2012, 02:43 AM   #3
MaxBell
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Yep, you need bump stops.

They're $20, if you're driving an E30 then $20 should not be that much money for you.
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Old 06-17-2012, 10:21 AM   #4
E30S54
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I would install them, you don't want to damage anything to save $20.
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Old 06-17-2012, 10:22 PM   #5
MaxBell
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I love how we all got progressively nicer in our "get some bump stops".
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Old 06-18-2012, 12:15 AM   #6
goldhawk
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Yeah, I was wanting to get them, just someone was trying to talk me out of it, plus of all the build threads I've seen, and diy guides, no one anywhere has ever mentioned bump stops.
I'd also be nice if I could finally stop having to order stuff and actually make some progress...
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Old 06-18-2012, 08:41 AM   #7
Bullet Ride
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just someone was trying to talk me out of it
Well I wouldn't take advice from that someone any more. Koni yellow shocks don't have internal bump stops like the Bilstein ones do. So yes, run a bump stop unless you want to risk damaging your shocks.
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Old 06-18-2012, 03:42 PM   #8
Mystikal
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I once had a very good mechanic install my Ground Control / Koni setup on my E30 almost a decade ago. He didn't install the bumpstops, maybe assuming that like Bilsteins the Konis had internal stops. I then experienced the harshest of harsh ride quality until I took it apart to install new stops. And also new shocks, since they had been murdered nicely.
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