High quality single chamber metal rear exhaust pipe to fit most .12 to .18 size engines using a rear exhaust. Please check measurements to ensure a correct fit. Right hand exhaust (pictured) as if looking from the back of the model towards the front. Included is: 1 x exhaust is 129mm long end to end - 1 x manifold - 1 x round gasket - 1 x long spring - 3 x short springs.