M3810P Rail Box Leg Support 6.5" thru 8.5" for Top Side and Over Fender Drawer Boxes Mounting Application up to 300 lbs.

MBFU61-A21-72-S - 1.25" x 1.25" x 71.75" Extension Angle Mounting Bracket for FU Fender Under Mount Drawer Box Mount Bracket

$74.03

MBFU61-A22-72-S - 1.25" x 2" x 71.75" Extension Angle Mounting Bracket for FU Fender Under Mount Drawer Box Mount Bracket

$83.13

MBFU61-A23-72-S - 1.25" x 3" x 71.75" Extension Angle Mounting Bracket for FU Fender Under Mount Drawer Box Mount Bracket

$94.33

M3590CS-A Aluminum Cross & Side Box Corner Mounting Plates - Installation Mounting Kit for Cross Box and Side Box Application.

$46.68