Have a pair for gently used Coil-Over springs made by HyperCoil in like new condition. Specs: 8 inch long 2.25 inch Inside Diameter 550 LB spring rate Part Number: 8A550 Perfect for REAR coil overs on a COBRA IRS. Note: If you are running an Eibach sway bar with your IRS these wont work. Hence the sale. Had to buy 1 inch shorter springs. Stock IRS sway bar, no problem. $120 FIRM Shipped.