Number Table In Japanese at Keith Turner blog Saddlemen Step 2 Up Black Rear Lattice LS Seat 4.5 Tank Harley 04+ XL Sportster. BRAND NEW PART # 807 03 173 Saddlemen Step Up Black Rear Lattice Stitch Seat Fits Harley 2004 2022 XL Sportster Models with 4. 5 Gallon Tanks Blends rider and passenger comfort with the ergonomics required to keep the rider locked in place and in control of the bike Combines a GelCore interior with Ultra Foam that creates a perfect balance of rigidity and user compliance The Ultra Foam's unique molding process creates an element resistant, self skinning process that seals the foam from water and enhances the seat's durability as well as comfort All mounting hardware and instructions are included for easy installation