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Join Date: Jun 2007
Location: Vancouver, BC
Posts: 76
Hydraulic Bumper "Shocks"/"Crush Tubes"

I have all 4 original shock absorbers for the bumper assembly, but they are really old (1974) and look really grotty.
My first inclination was to simply replace them, easy enough and all, but then i looked at the price tag and... $470, each for the front and $50 for the back (much more manageable). That puts a bit of strain on the budget, so my question is...

Should I buck it and replace the shock absorbers, or are they generally OK, unless they've been in an accident (ie one use only). My initial inclination is to replace them, given that they are a safety component, but is there a way to test them to see if they are ok, or a reason why I wouldn't replace them?

Thanks in advance!

Ian

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Old 06-26-2008, 05:01 PM
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Join Date: Nov 2003
Location: South Dakota
Posts: 1,497
Unless they have been damaged I would say they are fine. Just clean them up and put Por-15 or Rustoleum to make them look good again. The other option is post a WTB ad. In the past there have been some very good looking ones on the "for sale forum"
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Michael


88 911 Diamond Blue CE Carrera 3.4 HC3.4 member
2020 Honda Passport
Old 06-26-2008, 05:10 PM
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Join Date: Jan 2002
Location: Long Beach CA, the sewer by the sea.
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Good question. They were mandated by the DOT for the 5 MPH crash rule. Your safety won't be compromised if they are old, IMHO. Any crash over 5 MPH is going to be another thing altogether and the shocks probably wouldn't have absorbed much energy before the body started folding up. The 911 is known to be a safe car because of the construction.
Old 06-26-2008, 05:13 PM
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You don't state your location, it matters with the correct answer. Even though you asked one question, you are actually asking about two totally different bumper impact system devices. The "shocks" were mainly for the USA, but some other markets did receive them. The "crush tube type system, were for ROW application, they were basically a one time use product, while the impact bumper "shocks" could take a small impact, but they return, to "normal" position after a small impact, if they are still functional, after all the years. The "crush tubes do not return back to pre-impact location, because they get "crushed" back in to the area behind the bumper. The crush tubes are a little lighter weight, than the impact bumper shocks and I believe that they are also quite a bit cheaper than the shock style system parts. Good luck!! Tony.

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Old 06-27-2008, 06:31 AM
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