UPRSharad

They are manufactured for us by Eibach and they spec out the same as Eibach Pro Kit springs. They are progressive rate springs. I'm not sure what the rate is because Eibach doesn't list it on their website. But I have the springs on my car and I've tried difference springs. I like the balance between ride quality and handling on the UPR/Eibach springs.

S197 650

Is there any way you can get the specifications from your supplier?

I'm seriously considering these over Hotchkis & Sportlines, but I'm not going to spend my money on mystery spring rates. Making these spring rates public might also help you sell a lot more of these springs to the community.

Entaille

I suggest my products but I can't answer your question about them. I can tell you I enjoy them. Give me your money. thanks.

Whiskey11

What's wrong with Steeda Sports? 225 lbs/in front and 175 lbs/in rear. Linear rate (rather than bi-linear). Yes, mild drop (1" front 1.25"-1.5" rear) but well worth it IMO. No mystery spring rates.

bakerjd

+1. Best Mod I've installed on my vehicle as of now! Here's a before and after pic for reference:



Going with a more drastic drop is only going to decrease ride quality and to be honest the Steeda Sports surprised me with such a nice drop. Was not expecting that!

S197 650

Nothing at all wrong with the Steeda Sports (the pics in the post above look great.)

225 / 175 doesn't sound very stiff, but it would stiffen up the front of my car a bit (131/167). Eibach Pro-Kit does provide the rates I'd prefer (159/193), but not quite the drop I'm looking for.

If UPR Pro has the right specs to slot in between the Steeda Sports and Pro-kits, that's where my money would probably go. Just exploring all my options is all

S197 650

Also, Hotchkis springs look promising:

1.1" / 1.6"
180 lbs / 180 lbs

Good stance and good comfort

SteedaBrandon

555-8215 (Sport springs for the coupe) have a 200lb linear rate in the front, and 175lb linear rate in the rear.

Approximately a 1" drop in the front, and 1.25" drop in the rear.

Regarding the comfort, you are going to sacrifice a little bit of comfort (though our's do have a great ride quality), but will improve the handling. To me, it's a good compromise for the drop and handling improvement.

For your purposes, I would recommend our Pro-Action dampers to go with them. They offer a great ride quality and come with a lifetime warranty. We actually re-valved them quite a few times so that we could get the ride just right. And they are the only dampers on the market (at least that I know of) that you do not need the GT500 upper spring isolators for. We also have free shipping on those and the sport springs right now too.

If you want a little more of a drop, you could go with our Ultralites, which provide an approximate 1.25" (F) and 1.5" (R) drop. The spring rates on that are 195lb linear rate (F), and 175lb linear rate (R).

stephen1371

jumping on here, im looking to do almost the same setup, would this hurt my straight line traction at all, i lowered my old mustang and it killed the straight line

Frustration

Brandon, do you have a "package" that is preset with the springs and bouncers? link?