Fits both left and right side saddlebags

18mm is generally used on Harley models 2006 and earlier

90-93 GPZ S A1-A4 500cc

All 0 REARDISC BRAKE BEVEL TWINS

1981 DR 500 S 500cc

dna xv series pod filter id 57mm BS365 Fits both left and rightDNA 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.