Ultralight machined aluminum horn, for threaded carburetors, available in 16 sizes shown below. Without even a protective grid at the entrance, it is therefore recommended only on a clean track.
This filter increases the performance by improving the venturi effect, however the noise developed serras increased and more castling.
Available sizes (Ø = fixing Ø and L = horn length) :
Ø32X L 33mm (DELLORTO PHBG threaded)
Ø32X L 64mm (DELLORTO PHBG threaded)
Ø35X L 36mm (MIKUNI)
Ø35X L 60mm (MIKUNI)
Ø38X L 25mm
Ø38X L 70mm
Ø39X L 70mm
Ø40X L 42mm (threaded DELLORTO PHBH, non-threaded PHBL, MIKUNI ...)
Ø42X L 40mm (DELLORTO PHBH unthreaded)
Ø42 XL 58mm (without grid and without thread)
Ø42X L 65mm (DELLORTO PHBH unthreaded)
Ø43X L 33mm (MIKUNI, without grid)
Ø48X L 20mm
Ø48X L 36mm
Ø48X L 57mm
Ø48X L 61mm
Ø50X L 61mm (DELLORTO VHST, KEIHIN PWK, MIKUNI ...)
Ø59X L 37mm (DELLORTO SHA)
Ø55X L 63mm (MIKUNI)
The information next to the sizes is only indicative, you must take the Ø of your carburetor at the level of the air filter attachment !!! You should know that an unthreaded Ø 32mm horn will be mounted on a carburetor with a fixing Ø of 31.50 to 32.50mm. A Ø52mm horn will be mounted on a carburetor with a fixing Ø of 54 to 56mm without problems!
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