The Dellorto 24mm tuning carburettor PHBL 24AS with clamp connection is often used for automatic scooters and Vespa Classic scooters. For automatic scooters, it is usually used on 2-stroke maxi rollers. This carburettor can also be used on 50s with appropriate tuning for high-end tuning. This carburettor is usually installed on small frame models, which should keep the original air filter box. An easy to tune carburettor in the usual high Dellorto quality. Inlet Manifold Connection Fitment: 29mm Air filter Connection Fitment: 38mm Main jet: M6 # 100 Idle Nozzle: M5 # 050 Float: 9010.2 gr6.5 Carburettor slider: 40 (metal version) Carburettor needle: D22 Please note: We do not list this for specific vehicles and will therefore not except returns if fitted.