CLAMP-ON AIR FILTER BLACK, RED

K&N universal air filters come in four styles - round straight, round tapered, oval straight and oval taperedAll K&N air filters in this section clamp directly to the carburetor throat, replacing the stock airbox and filter element RC prefix part numbers have chrome end caps the rest are black rubber (K&N clamp-on filters are not street legal)Pleated design increases surface area air flowMatch the outer diameter (OD) of your carb throat with the inner diameter (ID) of the filter (given in inches and millimeters)

https://shopping.truda.io/product/clamp-on-air-filter-black-red