Shocks If you are buying new springs, you’ll need new shocks too, so it makes sense to buy the shocks from the same guy you are buying the springs from. Measure your existing shocks and add the expected lift height to get a rough idea of what new length is needed. Once you make sure the shocks in question are the right length, check the bushings for any kind of wear or cracks. If equipped, make sure the threads on the pin end are in good shape. It isn’t uncommon to replace the bushings on the pin end of the shock. Look at the shock body where the shaft enters for any sign of leakage or moisture. For remote reservoir shocks, inspect all the hoses and joints for moisture as well. After that, have a buddy or the seller hold the other end of the shock as shown in the photo and work it at least one full cycle. There should be no grinding, change in resistance, or any other abnormalities felt through compression and rebound.