Built-in stinger cone directs air smoothly into the bore of the carburetor or EFI throttle body and reduces turbulence and increases flow Kit includes backing plate, filter and hardware For stock...

Magnetic drain plug, 1/2-20 Made in the U.S.A.

Base gaskets feature S&S Pro-Formance micropore compound proven to resist failure due to extrusion or blow out 4.125" bore size with S&S bolt pattern 0.46mm thickness Made in the U.S.A...

Built-in stinger cone directs air smoothly into the bore of the carburetor or EFI throttle body and reduces turbulence and increases flow 5% increase in hp High-strength, die-cast aluminum...

Cast from A356 T-6 heat-treated aluminum alloy Includes crankcase bolts, washers and nuts, cylinder mounting studs, timing hole plug, magnetic drain plug, assorted breather and oil line fittings,...

Built-in stinger cone directs air smoothly into the bore of the carburetor or EFI throttle body and reduces turbulence and increases flow Kit includes backing plate, filter and hardware For stock...

Polished billet oil filter mounting bracket No voids or other casting defects in the material to cause leaks Position of the filter has been shifted slightly to give additional clearance between...

Close to original as you can get without stealing one from a factory museum bike Boss imperfections in the casting are maliciously duplicated to represent the casting capabilities of the era 100%...