Thunder Tour Pack Lids mount directly to OEM Harley base for use with existing base if using 1997 – 2013 H-D Base. Speaker design and position allows for a standard H-D backrest. Accepts Harley mounting hardware including latches, hinges, lock and backrest. Available with or without all mounting holes, including backrest holes as required. Made from gel-coated resin transfer, molded to hold a constant wall thickness around the flange face so it’s always flat and smooth for gasket seal. Carbon fiber reinforced at hinge and latch mounting locations for added strength and durability. Accepts 6.5 speakers (sold separately).