We have springs in stock, will calculate the rates, and have the easiest & cheapest spring swapping policy in the industry. We keep a huge selection of Eibach Coilover springs in stock and ready for quick shipment so you don’t have to wait for their next production run. When you’re not sure what springs you need we’ll run your vehicle through our calculator and figure out what you need. If the spring rates aren’t perfect the first time we’ll swap springs with you, and we don’t have a time limit or re-stocking fees like the other companies. 2.5 ID springs are for 2.0 Coilovers, 3.0 ID springs are for 2.5 Coilovers, and 3.75 ID springs are for 3.0 Coilovers. We are one of the largest coilover spring retailers because of our excellent service, knowledge & inventory.