ST Suspensions ST X or Megan Racing EZ Street Coil overs - Page 2
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Thread: ST Suspensions ST X or Megan Racing EZ Street Coil overs

  1. #11
    I spend too much of my life on FST! mitch808's Avatar
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    Quote Originally Posted by xeroevil View Post
    I'm apparently late to the thread Travis, haha. But I've had the ST-Xs for a little over a year now, and I'm not completely happy with them. They're not terrible, but I don't necessarily like the ride quality either. I do feel like the car handles better with them versus my previous setup which was Eibach Pro Kit springs on OEM shocks/struts, but the ride is a bit more bouncy. I may try to replace them with something else eventually.
    Too low? That is one way for those too feel uncomfortable and bouncy. They are finicky to ride height. I'd be curious if you tried it about 10-15mm higher, if it improved.
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  2. #12
    FST Senior Member xeroevil's Avatar
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    Quote Originally Posted by mitch808 View Post
    Too low? That is one way for those too feel uncomfortable and bouncy. They are finicky to ride height. I'd be curious if you tried it about 10-15mm higher, if it improved.
    I didn't think that it was too low, but I guess it could be. I'll try and raise it a little this weekend and see if it changes it any.
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    I spend too much of my life on FST! freakin_elrod's Avatar
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    The majority of coilovers that offer height adjustment through the spring perch only will most certainly exhibit a harsher ride if you go a bit too low. Doing that, you essentially take them out of thier operating range, shortening the compression/rebound stroke, and potenially create a condition where you ride on the bumpstops excessively which is no bueno.
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    15 Focus ST3 Tuxedo Black #38 STH
    -FoRS OEM air box w/Mountune intake pipe
    -Unleashed Tuned by Torrie
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    -Powerstop Z23 Evolution brake pads
    -ST Suspensions Rear swaybar
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    -Custom Mag Blue powdercoated Katana KR20 18x8.5 w/ 255/35/18 Bridgestone RE71R (daily)

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  5. #14
    I spend too much of my life on FST! mitch808's Avatar
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    Quote Originally Posted by xeroevil View Post
    I didn't think that it was too low, but I guess it could be. I'll try and raise it a little this weekend and see if it changes it any.
    Quote Originally Posted by freakin_elrod View Post
    The majority of coilovers that offer height adjustment through the spring perch only will most certainly exhibit a harsher ride if you go a bit too low. Doing that, you essentially take them out of thier operating range, shortening the compression/rebound stroke, and potenially create a condition where you ride on the bumpstops excessively which is no bueno.
    ^ This is especially true on progressive rate springs. The more it's compressed, the stiffer the spring. Which I believe is the case with all KW/ST rear springs. (I think fronts too, but am not 100% sure)
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  6. #15
    I spend too much of my life on FST! freakin_elrod's Avatar
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    Quote Originally Posted by mitch808 View Post
    ^ This is especially true on progressive rate springs. The more it's compressed, the stiffer the spring. Which I believe is the case with all KW/ST rear springs. (I think fronts too, but am not 100% sure)
    Fronts are linear, but the rears are progressive, either way, setting them too low will minimize the amount of shock travel available.
    oVrKiLL likes this.
    15 Focus ST3 Tuxedo Black #38 STH
    -FoRS OEM air box w/Mountune intake pipe
    -Unleashed Tuned by Torrie
    -MBRP cat-back exhaust
    -CJPP catted downpipe
    -Vortech FMIC
    -Fortune Auto 500 dampers (custom autox 510 valving)
    -Powerstop Z23 Evolution brake pads
    -ST Suspensions Rear swaybar
    -FSWerks short shift plate
    -Boomba shift knob
    -Verde Reflex 17x8.5 w/ 255/40/17 Bridgestone RE71-R (auto-x)
    -Custom Mag Blue powdercoated Katana KR20 18x8.5 w/ 255/35/18 Bridgestone RE71R (daily)

  7. #16
    I spend too much of my life on FST! oVrKiLL's Avatar
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    ST's are going in tomorrow - I'll post a few pics after the install. Thanks for all the info/feedback peeps.
    Last edited by oVrKiLL; Today at 08:21 AM.
    2016 Race Red ST3
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    ST X Coilovers
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  8. #17
    FST Junkie! G heinrich's Avatar
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    Quote Originally Posted by mitch808 View Post
    Quote Originally Posted by Invincible View Post
    The XTA is more like the KW V3. The V2 equivalent would be the XA. Which is, like the V2, not available for the Focus ST.
    ST and KW are produced under the same roof here in Germany, only major difference is that the ST ones aren't made from stainless steel but zinc plated steel. On the other hand, the ST XTA comes in at $1200 while the KW V3 is at least $1950 around here.

    Idk how it is in the U.S. but in Europe, KW is usually considered superior to Bilstein / Eibach (Springs for Bilstein suspensions are made by Eibach).
    In terms of ride quality, this applies to ST too. So it is KW > ST > Bilstein > H&R.
    The only real downside regarding the ST is that you have to wax them when you install them and check on them once a year and replace the wax if necessary. Unless you want them to rust away during winter of course.
    Not to split hairs

    But the XT is height adjustable
    The XTA is height and rebound adjustable

    From KW, the v1 is height adjustable
    The v2 is height and rebound adjustable
    The v3 is height, rebound and compression adjustable.

    Thus:
    v1 = XT
    v2 = XTA
    v3 = ř <-There are no equivalent ST Suspension coils to KW in this line.
    The St-x's are height adjustable only. The regular st's are non-adjustable. Xta's are height and rebound adjustable with camber plates. I can only find those for the RS.
    Last edited by G heinrich; Today at 09:54 AM.

 

 
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