You have to use OEM springs with the FSD/SAS shocks. The height of the car shouldn't increase or decrease if you are not changing springs. Springs define the height, the shocks just control the dampening rate.

 

 

I put them on about 5 years ago, R52 not much different than the 53, with no change whatsoever and wouldn't have it any other way. I'm getting a slight hint that your's may be lowered? If so, you need the yellows and not the FSD. Also, while you have it jacked up would be a good time to add a stiffer adjustable RSB either 19 or 22 MM. You won't believe the difference in handling. This is a 3 year old shot of our little guy somewhere on "The Loneliest Highway" so you can see there's no height difference..

 

 

I've had FSD's with stock springs for a couple of years and I haven't noticed any difference in ride height.

 

Negative. Everything on the suspension is OEM except for the dampers and RSB.
You will greatly appreciate the difference in handling with the FSD and RSB upgrade.

 

if someone said the fsd changes ride height, they were wrong, shocks do not change ride height, springs do

 

 

Dampers absolutely can raise the ride height. Most performance dampers are gas charged. They come with the shafts held in place for shipping and as soon as you remove the straps the dampers will extend to full length. As to the amount of difference, very little.

 

I think the reason for this is because people replace worn out parts and the car returns to it's original ride height. We install FSDs all the time and notice that high mileage cars that were all worn out do tend to stand back up. But not ever seen FSDs increase the ride height over stock.
We have FSDs in stock too
https://www.waymotorworks.com/koni-fsd-shocks.html

 

gas charged yes, but not pressurized against the piston like that. I can push FSD and Yellows down with my hand

 

yup.

 

Stock springs and FSD's

 

 

Stock "S" springs, special Actives

 

Just installed. This is after a couple sessions on the track to settle them. I'd say the height went up nothing in the front and about 0.25" in the rear, and that's because my foam mounts were well worn and I replaced them as well.

 

I try not to put foot in my mouth, but here I try. The FSD should not increase ride height. Yes, after you put the dampers in, and lower the jack the ride height might increase because of stiction and stronger damping - if you didn't slam the car down fast.