This version fits most 125 and 150cc largeframe Vespa models built from 1958 to around 1976. Some very early VNA models and some Allstate models may require some minor fitment modifications. This version does not fit the very very late examples of the Sprint Veloce, TS or Super with the larger-taper P-Series style crankshafts (late '76-'77). This innovative product was developed by the world-famous enthusiast and engineer Tino Sacchi (Evergreen Lambretta -- lambretta.it). This is a high-quality, solid-state electronic ignition system (with auto-variable timing) and 12 volt lighting system upgrade kit. This extensive upgrade kit for your electrical system replaces all typical problem-components and includes Flywheel, Stator, HT Coil, Regulator/Rectifier, misc Wiring Components, Misc Hardware and Bracket (12v light bulbs sold separately). Wiring harness and switch modifications are required for most models, contact us for details for your specific model.