1981 DR 500 S 500cc

Universal fit inside 1" and 7/8" (22mm) handlebars

All 0 REARDISC BRAKE BEVEL TWINS

18mm is generally used on Harley models 2006 and earlier

Now remove the seals from the fuel tap opening and check the threaded holes

dna xv series pod filter id 57mm BS365 1981 DR 500 S 500ccDNA Air Filter with high airflow and excellent filtration capabilities. Perfect for the motorcycle builder who is looking for both performance and good looks. Well suited for Cafe Racers or other custom motorcycles. Inner diameter: 57mm Length: 100mm Outer diameter (Largest): 90mm Outer diameter (Smallest): 51mm Flange: 16mm Length and flange measurements should be added in order to calculate the total length of the filter.