FITS HD, CUSTOMS & BIG DOG WITH ADAPTER

THREADS IN ADAPTER MEASURE 1.75 INCH ACROSS THREADS AND THERE ONLY 4 COURSE THREADS PER INCH , PLEASE MEASURE BEFORE YOU BUY.

POLISHEDCROWN GAS CAP AND POLISHED ADAPTER , YOU GET ONE GAS CAP ONE ADAPTER FOR THIS PRICE/ IF YOUR BUILDING A CUSTOM GAS TANK ASK ABOUT THE WELD IN BUNG FOR THESE GAS CAPS 

ADAPTER AND GAS CAP ALL THAT IS NEEDED FOR CUSTOMS, BIG DOG AND HARLEY MOTORCYCLES, FITS HD THREADS.

Our Billet Crown Gas Cap is machined from 6061 billet aluminum and comes in several different finishes, machined, polished. 

The cap can be used non-vented or vented by simply removing the stainless steel set screw on the bottom.

Also available a weld in bung (pictured) that can be installed in either direction, one way will position the bung flush with the surface and the other will raise it approximately 3/4 inch or with our new OEM adapter that allows installation in most '82-'10 HD right hand threads without any welding or paint damage.

SHIPPING CALCULATED FOR INTERNATIONL CUSTOMERS ALSO .