Milwaukee Twins Plain Gas Cap Set For Harley FL FX XL The Milwaukee Twins Plain Gas Cap Set is meticulously designed for Fat Bob tanks, offering a sleek style combined with practical utility. This set comprises one plain and one vented cap, ensuring a comprehensive solution for a straightforward and efficient fuel system. Formerly offered under the J&P Cycles brand. Features: Designed for Fat Bob tanks Set includes one (1) plain style cap and one (1) vented style cap Replaces OEM 61103-73 A (vented) / OEM 61103-65 (non-vented)