These bayonet style gas caps (also known as cam gas caps) are vented and are chromed steel

Or run dual petcocks to your single carburetor

These bungs are for 5/16" hardware

The pod filter overall dimensions are 3" across and 3-1/4" long

Clutch Hub Center for Triumph Complete With New Rubbers OEM #57-4435 Makes_BSA These bayonet style gas capsI would have to say replacing the rubbers in a Triumph clutch hub center is probably one of the most feared and oft neglected tasks of a British motorcycle owner. These brand new clutch hub centers solve that problem, as they are complete with new rubbers and ready to install! No more torching it and trying to get the impossible stock flat head screws out and wasting hours prying old rubbers out and trying to squeeze the new ones in. This complete,