Dellorto PHBG 21 BS 21mm Carburetor

The Dellorto PHBG 21 BS 21mm Carburetor is a genuine Dellorto performance carburetor designed for small-displacement 2-stroke applications, including minimoto, moped, gearbox motorcycle, and scooter builds.

With a 21mm venturi, flexible rubber-mount assembly, and direct choke setup, the PHBG 21 BS is a strong choice for riders and builders looking for a tunable carburetor platform for 2-stroke engines 65cc and larger.

Key Features

Genuine Dellorto PHBG 21 BS carburetor
21mm venturi for improved airflow and performance tuning
Designed for 2-stroke engines 65cc and larger
Ideal for minimoto, moped, scooter, and gearbox motorcycle applications
Flexible rubber-mount assembly style
Direct choke type
No separate lubrication connection
No vacuum connection

Product Details

Brand	Dellorto
Model	PHBG 21 BS
Dellorto Reference / MPN	02671
EAN	3760287730713
Venturi Size	21mm
Engine Type	2-Stroke
Recommended Engine Size	65cc and larger
Assembly Type	Flexible
Choke Type	Direct
Engine-Side Diameter	25mm
Air-Side Diameter	M32 x 1.25
Separate Lubrication	No
Vacuum Connection	No

Applications

The Dellorto PHBG 21 BS is intended for 2-stroke engines 65cc and larger, including minimoto, moped, scooter, and gearbox motorcycle applications. This carburetor is commonly used on performance builds where improved airflow, response, and tuning adjustability are desired.

Fitment Note

This carburetor is a universal performance part. Fitment may vary depending on intake manifold size, air filter setup, throttle cable, choke access, engine configuration, and existing fuel system layout.

Before ordering, confirm your engine-side connection, air-side connection, throttle cable compatibility, and available installation space. Jetting and tuning adjustments may be required after installation.

Installation Notes

Professional installation and tuning are recommended.
Check for proper throttle slide movement and full throttle return before starting the engine.
Inspect for air leaks at the intake manifold after installation.
Jetting may need to be adjusted based on engine size, exhaust, intake, altitude, fuel, and riding conditions.
Always verify fuel line routing and clearance before riding.

For riders building or refreshing a 2-stroke minimoto, moped, scooter, or small-displacement gearbox motorcycle, the Dellorto PHBG 21 BS offers a proven, tunable carburetor platform with genuine Dellorto quality.

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BR9ES 5722Spark Plug — Standard

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Carburetor PHBG 21 BS