Velocity stack (air horn) for PWK30 and PE28 carburetors for motorcycle tuning. Fits on the carburetor inlet in place of the stock air filter.
- Mounting diameter: 50 or 55 mm
- Height: 45 or 75 mm
- Size: 8×8×4.5 cm
- Weight: 93 g
- Colors: black, red, gold, silver, blue










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