04-16 XL models use metric 10mm x 1.25" and 12mm x 1.50" banjo bolts, washers and fittings. All Big Twin (except 08-16 Dressers) and pre-04 XL models use standard 3/8" and 7/16" banjo bolts, washers and fittings. Fittings and washers listed as 3/8"/10mm can be used in either application.