Universal Clamp-On air filter - TRI trident 660

Match the carburetor throat outer diameter with the filter inner diameter (measurements in inches and millimetres).  
It attaches directly to the carburetor mouth, replacing the original airbox and filter element.
Product Information
Brand: K & N
Supplier Reference: TB-6621
Base Colour: Black
Colour/Finish: Black, Red
Product Name: Air Filter
Units: Unit