Packs many improvements over S3TR I and some are: detachable left handle (first one is right handled only), improved steering system, foot stand suspension for more comfortable rides, larger aft wheels, improved steering and frame foldability (folds to the size of a suitcase: W 30cm, H 57cm, L 60cm).

 

All fairings are redesigned for vacuum thermoforming to cut the costs of initial production.