We estimate that the sprung weight of our Jeep will be about 500 pounds per corner completed. We wanted the 10-inch travel Fox shocks to sit in the middle of their travel at ride height. When you calculate the numbers, you end up with a 200-inch-pound spring rate. We ordered two 10-inch-long 200-inch-pound QA1 coils for each shock from Summit Racing. Summit offers many different coilover coils and rates so you can easily tune in your Jeep’s suspension.