This is the master cylinder for Casa Performance (single disc) brake X130 for Lambretta S1 + S2 models. This is a VERY powerful but FULLY modular unit that has plenty of 'feel' yet has a stopping power second to none. The Casa Lambretta Racing scooters all use these very same parts and believe us when we say NOTHING comes remotely close. When combined with the Casa performance ali handlebar mounts, this is the neatest, most compact master cylinder & switch housing set-up you'll ever set eyes on, period. We have added apic to show what it looks like when mounted. The purchase price is for the master cylinder only and the switch housing / mounting is a seperate part.