Powerflex Bushes

Snoop D

Member
Looking to purchase Powerflex bushes. Which ones are the most important to replace and which show significant improvement after replacement? 80% of all bushes will be getting replaced on car (front and rear).
 
I have replaced almost all of mine for power flex

For me the most important would be those that directly affect the steering then those that indirectly affect the steering

Then those that hold the suspension geometry in the position it should be in for longer as load increases.

Then do you go for yellow road or black track spec

I would like to tell you what the difference is but the amount of work I have done to my car over the winter and the fact I have yet to drive it, the amount of time that has passed means any memory of how It was is so distant it would not really help.
 
The most important to do in order: most worn to least. Unless you do them all at once it'd be counter productive picking and choosing if you're not replacing the most worn first. And as said above direct affect first to steering show most response first ie. front lower control arm bush and good idea to check the lca condition too. As to which power flex to go with look at what you plan on, street with some track no track or most track.
 
The front control arm bushes, rear trailingarm front bushes and front&rear anti rollbar bushes will give the biggest difference in handling en feel of the car.

I've fully polybushed my car 7or 8 years ago so I now have quite a few miles of experience (at least 30k+ miles) with them.
They hold up great, and don't show aging like normal rubber where the stiffness disappears over the years.
 
That's good to know as I needed new RTABs for my car this week and decided to go with Polybushes!
 
GuidoK said:
The front control arm bushes, rear trailingarm front bushes and front&rear anti rollbar bushes will give the biggest difference in handling en feel of the car.

I've fully polybushed my car 7or 8 years ago so I now have quite a few miles of experience (at least 30k+ miles) with them.
They hold up great, and don't show aging like normal rubber where the stiffness disappears over the years.

opening can of worms but I was thinking too on power flex RTABs as well instead of new oe with limiter kit on them....thoughts?
 
Piper1 said:
opening can of worms but I was thinking too on power flex RTABs as well instead of new oe with limiter kit on them....thoughts?

Why go for OEM plus limiter?
If you're opening up the rear suspension and your car's got miles, it always makes sense to swap out the bushings if you're preformance minded as they are an aging product.
Fitting back polyurethane bushings is way easier, they last longer, have limiters build in, and have no problems with lowered cars, because they don't require pretension (they act as a bearing).
Normally if bushings are fitted they must be in unstretched situation when the car is just sitting. If you lower your car, there is a constant tension (stretch) on the rubber in the bushing. That limits its lifespan and thus its performance.
There are also pillowball solutions for this, but they are more expensive, and if you have a pillowball without internal liner they will rattle, and if not shielded from dust they will wear.


If you go poly, just be sure to get good ones. Powerflex is great (the best I think), Strongflex also has some good applications (but also some that have to be avoided), but dont buy unknown brands from india on ebay or american crap like AKG. I've seen bushings from AKG that dont have knurling inside to act like a grease trap. That's not good for a bushing that acts like a bearing.
And dont go to crazy stiffnesses in the Shore D scale (again...AKG)
 
GuidoK said:
Piper1 said:
opening can of worms but I was thinking too on power flex RTABs as well instead of new oe with limiter kit on them....thoughts?

Why go for OEM plus limiter?
If you're opening up the rear suspension and your car's got miles, it always makes sense to swap out the bushings if you're preformance minded as they are an aging product.
Fitting back polyurethane bushings is way easier, they last longer, have limiters build in, and have no problems with lowered cars, because they don't require pretension (they act as a bearing).
Normally if bushings are fitted they must be in unstretched situation when the car is just sitting. If you lower your car, there is a constant tension (stretch) on the rubber in the bushing. That limits its lifespan and thus its performance.
There are also pillowball solutions for this, but they are more expensive, and if you have a pillowball without internal liner they will rattle, and if not shielded from dust they will wear.


If you go poly, just be sure to get good ones. Powerflex is great (the best I think), Strongflex also has some good applications (but also some that have to be avoided), but dont buy unknown brands from india on ebay or american crap like AKG. I've seen bushings from AKG that dont have knurling inside to act like a grease trap. That's not good for a bushing that acts like a bearing.
And dont go to crazy stiffnesses in the Shore D scale (again...AKG)

makes sense to me, did my LCA bush with powerflex late last year and was going to go with powerflex on the RTAB this year but I had read some were going the route of meyle bush with the turner limiter kit rather than poly.
 
Piper1 said:
makes sense to me, did my LCA bush with powerflex late last year and was going to go with powerflex on the RTAB this year but I had read some were going the route of meyle bush with the turner limiter kit rather than poly.

Well just to add to my earlier post here is a link to what Ross had to say about my polybush RTABs (bottom of Page 4):- https://z4-forum.com/forum/viewtopic.php?f=9&t=119564&start=45
 
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