These are brand new, never installed - great savings at $50/pr +shpg. PM me if interested.

When I was setting up my car I bought 3 pairs of rear springs, installed the 225# springs and they've worked great so I'm passing on the others. The springs are 2.5" x 10" coil springs from Summit Racing and are powdercoated black. To install these on your car you will need a threaded spring perch to replace the factory stamped steel perch. The upside of this is that you have a big selection of spring rates and will be able to adjust ride height and corner balance in the rear.

These are links to the springs I have for sale.
175# - Summit Racing® Coil-Over Springs SUM-102-5175
200# - Summit Racing® Coil-Over Springs SUM-102-5200

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Are they 2.5" I.D. or O.D.?
Sorry - I just checked the link and saw they're I.D. ....

Will they fit on adjustable Bilsteins

Yes, if you have slip-on threaded sleeves on them like these from Tarett. I picked up a no-name brand somewhere for less, but the finish on the Tarett's are definitely better.
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