Its called 'pre-loading the springs' Lewis, so the lower you adjust the cogs, the less rebound/room there is for the springs to make, making for an even harder and harsher ride, perfect for track use tho. My front coilys are maxed (tanabes dont go all the way down), and my rear are down to the arches with still a lil' room for adjustment. Also enzo mentioned to me once that there is a stage of lowering where you won't get any more gains, so after that it will be pure cosmetics not aesthetics. Hope this helps. Joz