FRPP Springs vs 2010+ MS3 Springs on an MK3 Focus--You will be surprised at the results. - Ford Focus Forum, Ford Focus ST Forum
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Old 04-26-2013, 09:23 PM   #1
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Thumbs up FRPP Springs vs 2010+ MS3 Springs on an MK3 Focus--You will be surprised at the results.

Some background:

I believe I was the originator of the idea to put 2010+ MS3 springs and the MS3 RSB on the MK3 Focus. The chassis is shared and they fit with a little modding to the front springs (cut one full coil off the bottom of the front springs to get the same drop as the rear--must be done due to the front end weight of the MS3 vs an NA MK3).

The MS3 springs have been on my car for a year now and combined with ST struts, Titainium Handling Package shocks, and the 2010+ MS3 RSB (26mm solid) the car handles incredibly and is FLAT through the corners with just enough oversteer to allow for some great turn-in, etc. The ride is firm, and on the horrendous WV roads I have to drive on sometimes salt heaves are a little rough, but really the ride is what you would expect from true performance springs and not at all too much (I drive 50 miles a day and they are just fine). The spring rates are almost identical to the MK3 Focus ST.

The drop with the MS3 springs ended up being an equal 1" front and rear plus or minus a 10th or so. No rake to offset the fact that the rear wheel wells are not cut out as high as as the front. In essence when looking at the car from the side, you will see that the rockers are level front to rear:



Now a few days ago I got the chance to make an impulse buy on some FRPP MK3 springs and went for it. The reviews have been positive with most saying they handle great, have a good ride, and give just enough drop. So I said "what the hell" and bought them. I figured that if handling will not be sacrificed and a little better ride can be had (I travel RT 33 every day for those in the know...), then I might be on to something.

Here are some pics (the ride height is shown after a 15 mile drive (I have drove more since then and the drop is the same except I think the rake might be a little more [so I guess the front is slightly lower now]):





As you can see the drop is not as great as with the MS3 springs. It is around 3/4" give or take a few 10ths. I am fine with that as I need the ground clearance here.

Here are some pics comparing the MS3 springs and the FRPP springs. Pay attention to the much thicker coils on the MS3 front springs:





Remember that the front MS3 springs must have 1 full coil cut from the bottom (these pics show that) and the rear springs must be left alone.

Now the comparison:

For sheer handling ability the MS3 springs win. They corner a little flatter in every situation and have less pitch and yaw in parking lot maneuvers. The FRPP springs have a lighter front rate (I have no actual rates for the FRPP springs, but I can feel it) and the rears have about equal rates compared to the MS3 springs. This is actually good because the FRPP springs have less understeer (the stiff rear spring rate and slightly softer front rate helps induce oversteer) than the MS3 springs and oversteer can be your friend. The car actually turns into a corner better with the FRPP springs, but once there the MS3 springs rule. As far as ride goes, the FRPP springs ride better than the MS3 springs. My ride is similar to my wife's 2012 Mazda 3 GT 2.5. Slightly firmer than a stock MK3 Focus, but not harsh. I am going to like them better for DD duties, but I will miss the MS3 springs for the serious stuff.

Would I switch them back? No, because the FRPP springs suit my needs a little better (DD duties with some serious handling when I need it), but if you want some serious handling on a serious budget (I gave $60 for a set of 10K mile 2011 MS3 springs--you want the 2010+ springs as the rates are better).

I hope this review helps.



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Old 04-26-2013, 09:38 PM   #2
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Awesome write up. This is great for people on a major budget. As you know to get some of the corner entry understeer add a bigger rear bar. Cutting the spring doesn't hurt any thing from a materials stand point, just to add. Mods should sticky for reference.
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Old 04-26-2013, 09:43 PM   #3
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Quote:
Originally Posted by felixthecat View Post
Awesome write up. This is great for people on a major budget. As you know to get some of the corner entry understeer add a bigger rear bar. Cutting the spring doesn't hurt any thing from a materials stand point, just to add. Mods should sticky for reference.
Yes, cutting did not hurt.

I have a 26mm solid MS3 rear bar (did have the 25mm hollow Steeda bar and this is much better), but I believe that I will try an aftermarket MS3 bar some day. Many of them are over 30mm...

I love my oversteer.
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Old 04-26-2013, 09:46 PM   #4
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Oh, and cut your springs in a way that reduces heat. A chop saw, cut off wheel on an air die grinder, or a band saw.
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Old 04-28-2013, 08:15 PM   #5
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Cool. I'm glad I just installed my MS3 springs.
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Old 04-28-2013, 08:58 PM   #6
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You will like them. Very flat in the corners. A lot of grip.

If you upgrade dampers they are even better.
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Old 05-05-2013, 07:11 PM   #7
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Cool

As much as I hate to tear into the suspension again, the FRPP springs now have a .5-.75" rake. The rear is jacked. Gonna cut .5 coil from the rear springs. When I get to it, I will show you the results.
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Old 05-05-2013, 11:13 PM   #8
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Quote:
Originally Posted by TORQUERULES View Post
As much as I hate to tear into the suspension again, the FRPP springs now have a .5-.75" rake. The rear is jacked. Gonna cut .5 coil from the rear springs. When I get to it, I will show you the results.
You just can't leave that suspension alone, can you?
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Old 05-07-2013, 08:20 PM   #9
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The measurement for my FRPP springs...

25 7/16" front. 26 1/4" rear.

So, 3/4" rake.
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Old 05-07-2013, 08:26 PM   #10
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So now I am about 1/2" lower in the front and about 1" higher in the rear than my MS3 springs. :-(
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