What do you think this MPG 38 trail run video?
Fred from CR Machine takes the trail bike into the backwoods logging trail. The MPG-38 engine is essentially a balanced, blueprinted GT-5 motor with stock port timing. The excellent torque of the MPG-38 engine makes it perfect for the trail bike because I want to go as slow as possible. Using a 60 tooth sprocket, I can go down to a crawl. The unmodified stock muffler is nice and quiet. They are available in my website store. The MPG engine is designed for non-expansion chamber style exhaust. The compression release head is a special head which can be purchased separately.