Ignition Timing Degree Disc SIP for ignition adjustment for Vespa/Lambretta/Scooter /Maxiscooter A deciding factor when tuning any motor is a correctly set up ignition timing. Often this is where the wheat is separated from the chaff. The ignition timing degree measuring disc is a practical tool that should not be missing in any properly equipped workshop. The very precise SIP Ignition degree disc enables an optimal set up of your ignition system. It is compatible for use with all two/four-strok