Buy one roll of toilet paper get M-5300-K Spring kit with FRPP Dampers and Shelby Strut Mounts FREE!

MrBhp

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Lowered price to $200
These are all parts that were taken off of my 2007 Shelby and were part of the Ford Performance Handling Package.
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M-5300-K Spring kit front and rearsprings4_.JPG
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Strut Mount Bearing Plates are the Shelby pieces, but not the ones you will see for sale these days. These are the ones that came on the early cars originally, and are a bit different from the "C" models that are now available, I think. If I understand correctly, these will allow the installation of this kit on mustangs from 2005 to 2014. PLEASE verify they will fit your car before purchasing.
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Dampers are the FRPP units made by Dynamic Suspension. These are the non-adjustable struts and shocks.
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I've tried to represent the true condition of these pieces to the best of my ability. Use the pictures to assess the condition. I took this setup off the car because I was sure they were the cause of some noise and harsh ride quality. Turned out it was some wore out bushings causing everything. I have no way to put these back on the car before heading back to Texas and I'm trying to get all of my belongings in the car for the trip.

The toilet paper is Cottonelle Ultra CleanCare with strong CleaningRipples. One MEGA roll equals four! Go ahead, have that extra burrito and bowl of beans, Chipotle can deliver more! This single roll of TP will give you that refreshing clean feeling that's so hard to find these days! (This was not part of the original Shelby package, it's new.)
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$200 picked up. I've checked a few addresses across the country, it looks like shipping is going to be around $100 on UPS. My zip code is 77757. Lumberton, Texas
 
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MrBhp

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It's what they call "integrated multi surfaced indivisible unalloyed" paper. "Studies show reduces wear ".
I neither confirm nor deny these claims.
 

Rick Simons

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It looks like the progressively wound springs may have been partly to blame for the harshness. Once the closely-wound coils bottom out or "close", the remaining "open" coils are left with all of the work, and since the spring's effective rate is now reduced with the close-wound coils closed, it's more prone to bottoming out if another bump is encountered. I used to see this at the track from time to time. They should call them "digressive rate" springs IMHO.
I used to use that paper, but I found that I bottomed out far too often with it. I went to a more linear rate paper, and the problem was solved. :)
Yes, it's a bad joke, but it's free.
 
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Not to cross-talk on someone else's thread/post, but Rick is wrong about how progressive springs work. ALL the coils compress at the initial rate, but once the closely wound coils bottom out, the remaining coils have a HIGHER spring rate because now the remaining length of the "torsion bar" is less. So even though the steel of the coils hasn't changed, there is less of it to yield as load is applied. A similar principle happens when you cut coils off a spring to lower it - now the spiral wound torsion bar (coil spring) length is shorter, making the effective spring rate higher.
 

MrBhp

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It looks like the progressively wound springs may have been partly to blame for the harshness. Once the closely-wound coils bottom out or "close", the remaining "open" coils are left with all of the work, and since the spring's effective rate is now reduced with the close-wound coils closed, it's more prone to bottoming out if another bump is encountered. I used to see this at the track from time to time. They should call them "digressive rate" springs IMHO.
I used to use that paper, but I found that I bottomed out far too often with it. I went to a more linear rate paper, and the problem was solved. :)
Yes, it's a bad joke, but it's free.

Funny you say that. The harsh ride was actually cause by bottoming out on the rear jounce bumpers. When I put the new divorced coilovers on the car it still about the same. Then I cut down the bumpers, problem solved. I can run the shocks on a stiff setting and it still rides better than it did.
Make sure rear end is not getting bottomed out.
 

Rick Simons

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Not to cross-talk on someone else's thread/post, but Rick is wrong about how progressive springs work. ALL the coils compress at the initial rate, but once the closely wound coils bottom out, the remaining coils have a HIGHER spring rate because now the remaining length of the "torsion bar" is less. So even though the steel of the coils hasn't changed, there is less of it to yield as load is applied. A similar principle happens when you cut coils off a spring to lower it - now the spiral wound torsion bar (coil spring) length is shorter, making the effective spring rate higher.
No offense 06VistablueAZSaleen, but it doesn't work that way. The spring rate (load capacity) is the product of the rate of an individual coil x the number of (active) coils. So if you take one or more coils out of action (cutting, heating, binding, etc.), the effective rate of the spring is lower. The force is still generated, but its increase is limited once the coils start to bind, because the bound coils can't deal with any of the increased load. Coil bind reduces the spring's overall load capacity and actually makes the spring rate somewhat digressive (force decreases with compression) after coils start to bind instead of progressive (force increases with compression). And of course, effective travel is lost with each coil that is bound, increasing the tendency for the suspension to bottom out and bind the remaining coils.
 

Macman45

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Not to cross-talk on someone else's thread/post, but Rick is wrong about how progressive springs work. ALL the coils compress at the initial rate, but once the closely wound coils bottom out, the remaining coils have a HIGHER spring rate because now the remaining length of the "torsion bar" is less. So even though the steel of the coils hasn't changed, there is less of it to yield as load is applied. A similar principle happens when you cut coils off a spring to lower it - now the spiral wound torsion bar (coil spring) length is shorter, making the effective spring rate higher.

No offense 06VistablueAZSaleen, but it doesn't work that way. The spring rate (load capacity) is the product of the rate of an individual coil x the number of (active) coils. So if you take one or more coils out of action (cutting, heating, binding, etc.), the effective rate of the spring is lower. The force is still generated, but its increase is limited once the coils start to bind, because the bound coils can't deal with any of the increased load. Coil bind reduces the spring's overall load capacity and actually makes the spring rate somewhat digressive (force decreases with compression) after coils start to bind instead of progressive (force increases with compression). And of course, effective travel is lost with each coil that is bound, increasing the tendency for the suspension to bottom out and bind the remaining coils.

Did you hoes read his message? Its a joke about Toilet Paper!
 
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I don't mean to be a thorn in your side, Rick, but I just want others to understand the physics involved. A quick internet search on "coli spring rate" brings this up:

"The calculation to find the rate of a coil spring is: 11,250,000 times the wire diameter to the 4th power divided by 8 times the active number of turns times the mean diameter cubed. Active turns are the number of turns of the spring that do not touch anything."

Because the "active number of turns" is in the denominator, that means that the spring rate is inversely proportional to that number, meaning the more coils in play, the less the spring rate is, and conversely, the less coils, the greater the rate!
 

MrBhp

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How many miles are on the struts?
Not completely sure. The car had around 70k on it when I replaced them. The original owner had the entire suspension replaced by
Ford when the issues of noise were being sorted out when these cars were new. I don't know at what mileage this was performed. They were all still in good working order when I replaced the entire system with coilovers due to noise issues. Didn't fix it. It was the frign bump/jounce stops. But it was a good excuse to spend money!
 

MrBhp

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20200708_123106.jpg
Finally got the pics for the shocks.
 

MrBhp

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You still living in 2011?
Ha! Apparently. My son took those. I remember noticing that now. When I was going thru my pics I couldn't figure out why I had two of the same. One had the right date. But not this one!
 

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