you don't want one sliding off while taking a corner or twisting the throttle

Parkerized clutch tension adjusting nut

screws lockwasher to mount air clnr to carb flange on all Twins 1936-55

more enjoyable ride

Designed for a hassle-free installation

Tear Drop Air Cleaner - Chrome - 1993-2009 Harley-Davidson Big Twin Brand_Cycle Standard you don't want one slidingThis kit allows you to use an iconic S&S Cycle Teardrop air cleaner with your stock Harley Davidson CV carburetor. The efficient, free flowing design can add two to five horsepower. A performance air cleaner is a must to get the most out of performance exhaust, cams, big bore or stroker kits. Kit includes aircleaner backplate, pleated, washable filter element, aluminum teardrop cover, all required hardware, and instructions. See Additional Information