It is a pair of springs and the complete mounting kit for $224. Shipping is extra and depends on where you live. In the northeast the shipping is $25. It is a mid-eye mount, 1" drop. Lifetime warranty.
I would advise against the 5 leafs if you don't want a harsh ride. I put in 5 leaf mid eyes last year as I autocross my fastback and I like the stiffness. I am usually the only person in the car so i don't care. The car has been built to perform on the track. Go with a 4 leaf for a smoother ride
I installed 4.5 leaf mideyes and they were perfect for me, not a harsh ride but firm. The half leaf faces forward to help with wheel hop. I also used polyurethane F/R bushings well lubed and never had a squeek. The shocks you choose can also have a big effect on harsh ride too.
Eaton's number for the Improved Performance Springs is LS1025. I just installed a set on my car. I think the stock spring is rated at 85 lbs and the Improved Performance springs are rated at 110 lbs. That is how much weight it takes to deflect them an inch. Both sets sit at the same height unloaded.
I actually had a conversation with Eaton before I chose them.
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