yes and its PSI, They were from the late 70's/80's . I have one on my 86 k5, Its a real small diameter pipe, and the bike is extremely pipeee like a 2 stroke 125. Like no bottom end or mid range. I'm not sure if they made a torque pipe or not. You would be able to kinda tell by diameter of pipe though. If its large like a pro circuit Plat II, it would be a torque pipe.