Midpipes are an integral part of the exhaust system. They really help increase performance by making the exhaust flow smoother and more evenly from the two cylinder banks. X-pipes look like an X, and are also called crossover pipes. They will increase performance over the factory pipes regardless, but their biggest gains come at the higher rpm's. If you are looking for John Deere Parts then you have found the right spot. We offer a full line of parts for all your John Deere Equipment.
Jun 24, 2009 · Pipe length, diameter, radius of bends, muffler volume and internal baffle design affect performance. If a pipe is too long, too short, too small or too big in diameter for a given engine size, cam timing and rpm range, performance will suffer. Bigger engines generate greater exhaust volume and require a higher-flowing system.