I have an 07RMZ450, the stock head pipe is dented and cracked. I purchased a used replacement from an 06RMZ450. The 06 stock head pipe has a shorter bend than the 07. I was also looking at a Pro Circut head pipe that was even shorter than the 06 head pipe.
Does the longer head pipe increase torque? And is the shorter head pipe designed for more topend?
Does the longer head pipe increase torque? And is the shorter head pipe designed for more topend?
