Reply To: Factory Immobiliser? Great British Handcrafted Motorcycles › Forums › Spitfire – Six › Factory Immobiliser? › Reply To: Factory Immobiliser? 1 March, 2023 at 10:47 am #14907 martin G10Member Hi, nabbott The Spitfire electrical system has neither an immobiliser circuit or very secure, the immobiliser to comply with an msva is the steering lock, a tracker was available, I don’t know if it was thatcham approved. regards martin