The Dellorto 25mm tuning carburettor PHBL 25BS 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 easily tuned carburettor in the usual high Dellorto quality. Intake Manifold Connection Fitment: 30mm Air filter Connection Fitment: 38mm Vacuum connection: No Oil Connection: No Main Nozzle: M6 102 Idle Nozzle: M5 70 Choke Nozzle: M5 60 Float: 9010.2 6.5g Carburettor Slide: 40 Carburettor Needle: D22 Nozzle: M6 AQ266 PLEASE NOTE: THIS IS A NOT VEHICLE SPECIFIC LISTING, PLEASE ENSURE THE CARB MATCHES YOUR REQUIREMENTS AS WE ARE UNABLE TO ACCEPT RETURNS FOR CARBS THAT HAVE BEEN TAMPERED OR RUN.