Dellorto PHBG 21 Velocity Stack / Carburetor Trumpet

Custom-designed velocity stack (trumpet) for Dellorto PHBG 21 carburetors with a 28mm threaded connection. Length: 45 mm Inlet Flare: 48 mm with an optimized smooth bellmouth radius for maximum air flow. Mounting: Direct threaded connection for a secure, vibration-proof fit on PHBG carbs. Perfect for 2-stroke scooter builds (Minarelli Horizontal, etc.) and open-filter or race setups.

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