Excellent full radius Air Horns for top performance. 
 
Choose from:
 
40mm (red for Solex, MIkuni, Weber, Dellorto 40's ), - in stock
45mm (Weber/OER),- special order
48mm( Mikuni 44) - special order
USA CNC  Production
 
Aluminum billet material NOT spun and not universal made. 
 
Mikuni versions are made specifically for the 44mm Mikuni/Solex carburetors with the correct diameter being ~48.2mm at the air entry for uninterrupted air flow.
 
Outstanding design, Fully tested on a flow bench!