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Go Back   IWSTI.com: Subaru WRX STI Forums > GD Series STi Discussion (2003/4-2007) > GD-Technical > GD-Suspension, Handling, & Stiffening


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Old 08-16-2007, 08:11 AM   #1
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Default Bumpstop ?

I am installing my JDM pinks this week, and after reading on here am going to cut my bumpstops. I have done this a few times on cars I've had in the past and had great results, including my 03 WRX. After searching on here I found this: http://wrx.dicknogs.net/techdocs/prodrive_bumpstop.pdf do I have to disasemble the struts to get to the bumpstops?


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Old 08-16-2007, 08:42 AM   #2
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Default Re: Bumpstop ?

absolutely. once you have safely removed the spring and top hat, remove the nut on the bottom of the strut. this will allow the perch and sleeve to separate from the cartridge. You will find the bumpstop inside.

imo get the prodrive bumpstops. i've cut the bump stops and since put on prodrive bumpstops. there is considerably less jounce with the prodrives because when you cut the stock bumpstops, you remove some of the progression.
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Old 08-16-2007, 09:04 AM   #3
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Default Re: Bumpstop ?

yep... one black nut on the bottom of the strut assembly, and the entire strut will pull in half. All you need to do next, is yank the bumpstop off the shaft. It will seem like it is too tight to get off... but it will. I had my buddy hold the strut while I pulled on the stop, and it came right off.
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Old 08-16-2007, 11:38 AM   #4
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Default Re: Bumpstop ?

The document you linked to contains everything you need to know about getting at the bumpstops. Read it!
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Old 08-16-2007, 01:41 PM   #5
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Default Re: Bumpstop ?

I will follow these instructions, just have never had to get to a bump stop like that before (that's why I love this site). Would you suggest trimming front and rear?

Thanks again for the replies. Also do you have a link to the prodrive bumpstops?
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Old 08-16-2007, 02:10 PM   #6
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Default Re: Bumpstop ?

Hey quick question- How many bumpstops come with the new v2 yellows?
I only got 2 is the correct???

Called Andrew @ RCE - apparently they come with 2 bumpstops for the front.
I am fine using the Prodrives in the rear.

Last edited by TheHammer; 08-16-2007 at 02:33 PM.
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Old 08-17-2007, 10:30 AM   #7
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Default Re: Bumpstop ?

afaik the rears do not need replacement/modification. the rear suspension rarely goes its full travel range. unless you're rallying . The front, however, is usually riding on the bumpstops.

my rce yellow replacements came with 2 bumpstops (for the front) and the original set came with none.

rallysport direct carries the prodrive bumpstops: http://www.rallysportdirect.com/shop...ps-p-2478.html


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