Yer thats an oil breather, bolts in where the oil filler cap goes. Not sure if it has a non return valve, will have to check it out when i get home. im sure it will have
Its a aftermarket Cafe racer exhaust from the bay of E. seen it, loved it, bought it haha.
Didn't buy anything from the china sites buddy as it takes too long to get here, but im sure they did come from China tho haha, are they as ggod as they look then?