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Old 07-09-2012, 10:51 AM   #1
DarrenDriven
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Suspension Review: Eibach Pro-Kit Lowering Springs

This topic is linked from:
BRZ/FR-S Suspension Options List (Springs and Coilovers)




Product: Eibach Pro-Kit Lowering Springs
Front: claimed 1.0" vs actual 7/8" (rate: 3.6kg/mm)
Rear: claimed 1.0" vs actual 7/8" (rate: 4.9kg/mm)
Part No: 8210.5.140
MSRP: $359

Manufacturer Link

Lowering Spring Installation DIY



I have had the Eibach Pro-Kit on my FR-S for about a week now, with over 200 miles of spirited driving on the street and in the mountains. I am extremely happy with this product as it simply improves the driver's experience with a slightly stronger connection to the road without being overly harsh.

The drop is advertised as a 1.0" front and rear, although my 2013 FR-S was only lowered 7/8" evenly at all four corners. That is close to an inch, but with the car riding so high to start off with I wish that the error would have been in the other direction. The new look simply removes the unsightly wheel gap that plagues the Scion. The front spring rate is increased by 56% (3.6kg/mm vs 2.7kg/mm stock) and the rear by 29% (4.9kg/mm vs 3.8kg/mm stock) and although this sounds a little extreme, some coilover kits have four times the stiffness of the stock springs.

These springs aren't harsh. Road feel is improved, but I don't cringe when I see a ripple, pothole or driveway. The car has a tendency to bounce just a bit more under aggressive driving on extremely rough surfaces, though, and I would definitely recommend upgrading the dampers (shocks) as a complimentary modification if you plan to take driving seriously. Around town you could easily live with the stock shocks (until they die, possibly)

I would recommend these springs for the BRZ/FR-S owner who simply wants to remove the 4WD look of the car without resorting to any extreme measures. The Eibach brand is an industry staple and customer satisfaction is high. This is a safe bet at a good price.





Front Spring comparison with stock on top and Eibach Pro-Kit on bottom


Rear spring comparison with Eibach Pro-Kit on top and stock on bottom









Last edited by DarrenDriven; 07-13-2012 at 02:42 PM.
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Old 07-09-2012, 11:13 AM   #2
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looks nice! I don't ever upgrade springs without upgrading shocks though.
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Old 07-09-2012, 11:16 AM   #3
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Well, I have coilovers on the way but I simply couldn't look at the car any longer with the nosebleed altitude.
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Old 07-09-2012, 11:24 AM   #4
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One thing I don't understand.

How do they measure the spring rates on a progressive coil design?
Did they measure the rate of the first, middle or last section of compression??
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Old 07-09-2012, 11:36 AM   #5
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Good review. but at the looks of that, I'm going to need at least a 2" drop. I will have nothing less than HELLA FLUSH.
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Old 07-09-2012, 11:39 AM   #6
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These: http://www.ebay.com/itm/Tein-Tech-Sp...449c6a&vxp=mtr

Look like they could give a bit more of a drop. I'm curious as to what Megan Racing will provide since they always seem to give a lower drop than others.
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Old 07-09-2012, 12:14 PM   #7
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damn that looks good but not enough drop for me either, i was hoping i could avoid coilovers but maybe not....
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Old 07-09-2012, 12:19 PM   #8
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The Eibach Sportline springs are a 1.4" drop all around, those are another good alternative to coilovers if you want to save $$$.
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Old 07-09-2012, 06:28 PM   #9
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thanks for the review! did you by chance take a before and after picture of the wheel gap from the fender to the wheel at close range? id love to see those as well if you did.
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Old 07-09-2012, 06:51 PM   #10
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Nice post. The car looks great!
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Old 07-09-2012, 08:24 PM   #11
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Quote:
Originally Posted by lucchesi423 View Post
thanks for the review! did you by chance take a before and after picture of the wheel gap from the fender to the wheel at close range? id love to see those as well if you did.
Not up close, I didn't. Shoot.
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Old 07-10-2012, 10:36 PM   #12
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Seems like 19 inch wheels and the lowest drop springs might achieve a decent flush status. But 18 inch wheels and smaller will probably need coilovers.
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Old 07-10-2012, 11:05 PM   #13
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Quote:
Originally Posted by DarrenDriven View Post
Not up close, I didn't. Shoot.
its all good. all you really have to do is get another board member with the same color car to take the stock height photo, then you yourself take the photo of your car as it is now. Overall, looks really good, what shocks are you eventually switching to once the stockies go?
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Old 07-11-2012, 01:20 AM   #14
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I have coilovers on the way, these springs are just temporary until the coilovers show.
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Old 07-11-2012, 02:39 PM   #15
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any updates? did your car ever settle at the full 1inch drop?
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Old 07-11-2012, 02:41 PM   #16
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Needs more low.

If you can fit your hand in it, it's not low enough.

You rears especially.

:happy0180:
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Old 07-11-2012, 02:43 PM   #17
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Quote:
Originally Posted by DarrenDriven View Post
I have coilovers on the way, these springs are just temporary until the coilovers show.
money much? what coilover set did you get?
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Old 07-11-2012, 02:46 PM   #18
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Quote:
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Needs more low.

If you can fit your hand in it, it's not low enough.

You rears especially.

:happy0180:
if you can fit your hand in, that means you have suspension travel and your car won't skid at the slightest bump in a corner.
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Old 07-11-2012, 03:02 PM   #19
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Quote:
Originally Posted by Synack View Post
These: http://www.ebay.com/itm/Tein-Tech-Sp...449c6a&vxp=mtr

Look like they could give a bit more of a drop. I'm curious as to what Megan Racing will provide since they always seem to give a lower drop than others.
Anyone know if these are actually in stock/ready to ship? I've checked everywhere and most websites aren't getting these springs 'til the end of July, find it hard to believe that this guy is sitting on a nice stock of them ready to ship/sell.
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Old 07-11-2012, 03:08 PM   #20
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Quote:
Originally Posted by f0rge View Post
any updates? did your car ever settle at the full 1inch drop?
Nope. 7/8" and I've put hundreds of miles on the car. I don't think it's going down any more.

Quote:
Originally Posted by lucchesi423 View Post
money much? what coilover set did you get?
KWs showed up last week, but I am waiting for D2s to arrive. I want to try the $1000 set before deciding to install or sell the $2000 set.
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Old 07-11-2012, 10:52 PM   #21
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A similar review of the D2's would be awesome and much appreciated. Not that this one wasn't.
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Old 07-12-2012, 12:40 AM   #22
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I will definitely do that.
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