bgm PRO intake manifolds for Vespa VNA and Motovespa - modern carburetors for historic engines
The early Vespa large-frame engines from the 1950s and 60s are technically unique - and often pose a challenge when choosing a carburetor. Anyone who rides an engine with direct cylinder intake knows the problem: the original Dellorto UA16 S1 is hard to come by - and when it is, it is rarely in good condition.
This precisely manufactured intake manifold provides a remedy and opens up new possibilities for tuning your classic. It fits the following engines perfectly:
✔️ Vespa VNA1T and VNA2T (model years 1956-1957)
✔️ Motovespa 150S (engine V201M and 502M)
✔️ Motovespa 150 Sprint and 150 GS (engine 04M)
✔️ Motovespa 160 GT (engine 09M)
The nozzle has a streamlined design and enables the installation of modern carburetors with better spare parts supply, clean running and simple tuning. The carburetor sits to the rear in the direction of travel - this creates sufficient space and makes maintenance easy. A suitable gasket is supplied.
More air, more power - ideal for tuning
The original UA16 S1 is very small and acts like a bottleneck - the engine cannot "breathe" freely. This intake manifold makes it easy to convert to modern carburetors. The result: better filling level, clean engine running, powerful acceleration and a base that can be easily tuned - from a discreet everyday setup to a sporty touring engine.
Choose your connection diameter
✔️ Ø 23 mm - ideal for Polini CP23: compact, powerful, outstandingly tunable
✔️ Ø 28 mm - suitable for Dellorto PHBH 28, Keihin PWK 28 or Mikuni TMX 27
✔️ Advantages at a glance
✔️ Enables the use of modern carburettors instead of UA16 S1
✔️ Perfect fit for cylinders with direct intake
✔️ Compatible with VNA and many Motovespa largeframes
✔️ Flow-optimized channel for clean gas flow
✔️ Available in two connection sizes: 23 mm or 28 mm
✔️ Tuning-friendly base for more torque and power
✔️ Solid workmanship and easy installation
✔️ Includes carburetor gasket
FAQ - Frequently asked questions about the intake manifold VNA and Motovespa
Why do I need this intake manifold at all?
The engines concerned do not have an intake on the engine housing, but directly on the cylinder. There are hardly any suitable original carburetors left. This connecting piece allows simple conversion to modern carburetors with better spare parts supply and tuning options.
Which carburetors fit?
In the Ø 23 mm version: Polini CP23
In the Ø 28 mm version: Dellorto PHBH 28, Keihin PWK 28, Mikuni TMX 27
Does this also fit PX, Sprint or Rally?
No. The nozzle only fits engines with direct cylinder intake, such as those used on VNA and various Spanish Motovespa models.
Is a gasket supplied?
Yes, a suitable carburetor gasket is included in the set.
DE | €
