Reply To: Spitfire 6 exhaust noise levels….. Great British Handcrafted Motorcycles › Forums › Spitfire – Six › Spitfire 6 exhaust noise levels….. › Reply To: Spitfire 6 exhaust noise levels….. 4 January, 2022 at 12:04 pm #10627 martin G10Member Hi, Max The MSVA test has a noise limit that’s higher than a mass production bike (around 10db more)( also no abs and no cat for this engine design ) , so it is legal. regards Martin (a six owner)