The opposite extreme of the pop-up is the dished piston. When we dish the piston, we increase chamber volume and lower compression. Dished pistons show up in strokers and supercharged applications. We use them in strokers because we have increased compression height. With strokers, the piston travels further in the same bore and combustion chamber sizing. This calls for an increase in chamber size when the piston reaches the top of the bore. In supercharged applications, we reduce compression to make up for the boost.