Lambretta PHBH 30mm carburettor kit supplied with YSN aftermarket carburettor.

Manufactured to PHBH specification, this unit is compatible with Dellorto jets and components. This is an aftermarket product and not a genuine Dellorto carburettor.

The 30mm PHBH is typically suited to high-performance and race-oriented Lambretta engines where increased airflow and fuel delivery are required. Best suited to tuned 200cc+ builds with appropriate porting and exhaust systems.

Each kit is assembled and jetted according to your engine specification. Setup takes into account cylinder kit, porting level, crank configuration and exhaust system to provide a strong baseline for final fine tuning.

Jetting considerations include:
• Atomiser selection appropriate to engine tune  
• Main jet range for high-load operation  
• Needle and slide combination for mid-range control  
• Idle circuit setup for stable low-speed response  

At Readspeed, we are experienced Lambretta tuning specialists with in-house dyno facilities available for precise carburettor setup and optimisation.

Kit includes:
• YSN PHBH 30mm carburettor  
• Manifold  
• Manifold gasket  
• Manifold rubber  
• Extended throttle cable  
• 2 retaining clips  
• Solderless nipple  
• Jet and atomiser pack matched to application  

Optional remote air filters available at additional cost (please contact us for details).

Important:
Full engine specification must be supplied when ordering, including cylinder kit, crank type and exhaust system, to ensure correct jetting.