These breather bolts are a perfect addition to any custom build or upgrade

or just chasing that perfect throttle response

and will accept a Harley-Davidson Cam Style gas cap (not included)

bobber seat springs

Competition Screw-In Gas Cap for Harley-Davidson 1996 & later - Black Brand_British Standard These breather bolts are aThe Competition Gas Cap from Lowbrow Customs replaces the boring stock cap on your 1996 & later Harley Davidson motorcycle, as well as many aftermarket gas tanks that take a H D screw in style gas cap. A useful feature of these vented, cast aluminum gas caps is the ratcheting mechanism, which allows you to tighten the cap and then rotate it back right to the spot you want it to stay, keeping the design in line with your bike. The soft and supple