The revolutionary new 'Cyclone 5 Speed' complete 5 speed gearbox kits for Lambretta S1 + S2 + S3 + GP DL and Serveta models. These are THE BATCH 6 kits that are the equivalent of the previous 'Supreme' version (the 'Standard' versions are no longer available).We have changed manufacturer, added some subtle modifications to the design to greatly improve lubrication and to make the gearboxes quieter. These are the absolute business. They are what we use to power the 'Casa Lambretta Racing Team' scooters and one was fitted to Luca Zani's scooter that won the mentally-hard-fought 'Group 6' category in the 2016 British BSSO Championships. These add enjoyment to using your Lambretta ten-fold. Once you've tried a Cyclone 5 Speed gearbox, you'll NEVER want to go back to a 4 speed box. Guaranteed.