Powerflex poly rear shock mount insert feedback?
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Joined: Apr 2010
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Powerflex poly rear shock mount insert feedback?
The powerflex insert replacement seems like a very practical option... but how is it really for those who have taken the plunge? They say poly bushings squeak..also I'm wondering, the center part has to stay connected to the poly part on the up and down movements... are there no incidents of separation of these 2 parts?? Experiences and reviews would be greatly appreciated...
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Joined: May 2015
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From: San Juan, PR
I had these installed on my 2009 997.2 C2 a bit less than two years ago when I had new Bilstein B4 shocks and Einbach springs mounted. So far no squeaks or other funny noises coming from that area.
Instructor
Joined: Feb 2024
Posts: 150
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From: PNW
I put these in about 3 or 4 months ago as well, no problems they seem very nice. Much stiffer than the OEM foam but not overly so. I notice no difference in ride quality although I also put in new shocks, springs, and controller at the time. In fact my "foam" was partially disintegrated so these are actually quieter.
I recommend them without hesitation, and they're much cheaper than buying the whole dang metal/foam piece.
I recommend them without hesitation, and they're much cheaper than buying the whole dang metal/foam piece.
Instructor
Joined: Nov 2021
Posts: 118
Likes: 67
From: Vancouver, BC
also have these had them installed with B16s. No odd noises or extra noise that I can hear; ride is of course firmer, but Id guess the majority if not all of that change would be due to the B16s (coming from eibachs)
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Joined: May 2015
Posts: 727
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From: San Juan, PR
BTW, although my car is a 2009 C2 and currently with only 31K miles, I was amazed at how deteriorated the stock bushings were. Mind you I live in the Caribbean and we don't have temperature extremes nor the caustic salts that are used in Northern climates for snow removal.
Last edited by Astur; Oct 4, 2024 at 03:56 PM.
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Instructor
Joined: Aug 2013
Posts: 242
Likes: 102
From: Southeast Florida
I ordered these to install with a new set of rear Bilstein B6 struts and made the mistake of not test fitting them
onto the new struts before tearing everything down. The bore of the bushing was too small and didnt fit the new or original strut. I ended up having to reuse my old strut mount bushing and send them back. Turns out that they had some sort of manufacturing defect on their end. Next time the struts come down Ill be giving them another try for sure.
onto the new struts before tearing everything down. The bore of the bushing was too small and didnt fit the new or original strut. I ended up having to reuse my old strut mount bushing and send them back. Turns out that they had some sort of manufacturing defect on their end. Next time the struts come down Ill be giving them another try for sure.
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