It's a pain in the butt trying to buy shocks for a truck/suv you bought lowered. Not knowing how much the truck is dropped makes buying shocks a difficult task. This how to will also be helpful for the trucks that have air suspension or running a super low static drop. MEASURING POINTS FOR SHOCK ABSORBERS Measuring points differ based on the mounting style. Extended and Compressed lengths are measured: From center of eyering to shoulder of stud From center of eyering to center of eyering From shoulder of stud to shoulder of stud Once you have the measurements give us a call and we can help select a part number that will work. If you already know how much your truck is lowered CLICK HERE to find the part numbers you will need by Belltech. *This is courtesy of KYB Americas website. We do not take credit for the images or text above.