Eibach Pro Kit at Tirerack - Cheapest Ive Seen

[Vietzboi87]

Thanks for the great info! I might order the sportlines since they're only $218 shipped.

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[Digital_Synapse]

FWIW, I got too excited about buying parts last Thanksgiving, and after the fact felt that I didn't do enough research with some of my purchases. I hadn't had a Mustang in 13 years (Fox with all the bolt-ons), and bought one of the first of the 2016's, and immediately got all mod-happy. Specific to springs, I got a great deal on Eibach Sportlines, but later on did some research in the forum and came up with two main issues: S550 works better with linear rather than progressive springs, and going much heavier in spring rate than stock will cause your shocks to be mismatched. The Pro Kit is not quite as low as the Sportline, and a little bit lighter spring rate, but I wish I would have gone with the BMR Performance Springs (search on this forum).

One of the other members posted some useful spring rate comparison values (lbs/in);

GT: 160 / 668
GT PP: 165 / 728
BMR Performance: 170 / 740 (+3% / +1.5% vs stock PP)
BMR Handling: 300 / 980 (+82% / +35% vs stock PP)
CJPP: 182-217 / 799
Pro-kit: 200-314 / 800-914
Sportline: 217-331 / 879-994

Note that the progressive springs have ranges related to how deeply you are compressed (increasing), and with the limited suspension travel of these cars lowered, I would bet that they tend to run very quickly into the higher spring rates. Then you get the spring effect also of the bumpstops compressing and pushing back, which magnifies the effect. No wonder that the stock shocks can't keep up.

But if you're into stance first and performance second...Eibach Sportline is pretty awesome for that :shrug:

Excellent information here

 

[jwhite]

I'm in the start of installing the springs and sway bars. What hole, performance setting are you guys choosing for sway bar? Mild ,all around, or the last hole for performance?
Any advice on getting out the stut to knuckle bolts? I got the nut off but the bolts are frozen in their? I'm going to use an air hammer on it tomorrow morning!!!

 

[Evo_Rob]

I'm in the start of installing the springs and sway bars. What hole, performance setting are you guys choosing for sway bar? Mild ,all around, or the last hole for performance?
Any advice on getting out the stut to knuckle bolts? I got the nut off but the bolts are frozen in their? I'm going to use an air hammer on it tomorrow morning!!!

I think BMR recommended middle hole on front, stiffest hole in the rear (hehehe).

As far as that bolt, put the nut on so it's flush with the bolt tip and use a regular/sledge/dead-blow hammer with a few good whacks and it'll pop out.

 

[jwhite]

Doesn't every one want to know how she'll perform in that back hole.......lol
I did do the beat it with the hammer thing, I also put nut back on not to damage threads. Those thing are in there!!! I put some spray on them last night and I bought a punch bit for my air hammer.

 

[Evo_Rob]

Just be careful, those air hammers like to jump and destroy threads.

 

[Doctor Fishtail]

Sway bars make a HUGE difference in how the car handles and how much flatter it stays in the turns.

I have the Steeda sway bars and their billet mounts. What a big difference it made.

Anybody have any idea what the Steeda sway bars measurements are? I like the Hotchkis sway bar kit Front is 36.5mm rear 25.5mm

 

[BTM]

When I was doing this, I was able to get a good angle with a solid dead blow hammer swing by laying on the ground parallel to the car with my chest directly under the front strut, feet past front of the car and head towards the middle of the car. Then, with the nut protecting the end of the threads, just swing like you are trying to win one of those county fair contests where you swing a big hammer on a plate and try to make something go up and hit a bell


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[jwhite]

Air hammer shot them right out!!!! Front on, doing backs tomorrow. Not rushing we got 3 days of snow coming,,,,,arg
On a side note though. Back to the adjustments any on do middle front, last one on back or any other combinations from front to back?
I set the car down with the fronts done, back still stock. Reminded me of my 71 nova with air shocks. Lol

 

[Pnasty]

so on a stock car cali special not PP, can someone compare ride qualities of the eibach pro vs. BMR performance? I don't know what spring rates mean or relate to in the real world

 

[Static_LV]

This is great information, but to clarify, are the GT PP rates listed for the 2015 or 2016. I was given to understand that things got tweaked on the 16 in response to customer complaints about wheel hop.

 

[Todd15Fastback]

This is great information, but to clarify, are the GT PP rates listed for the 2015 or 2016. I was given to understand that things got tweaked on the 16 in response to customer complaints about wheel hop.

I don't believe the spring rates changed. What I have heard is that the struts/shocks have been re-valved.

I cannot confirm or deny if that is accurate. Just speculation I have seen across different sources.

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