Fat Boy Parts

The Fat Boy's solid disc wheels and heavy-set look made it one of the most recognizable Softails, and its owners tend to customize with both style and ride quality in mind. This page lists parts tagged for Fat Boy fitment, including items shared across the wider Softail line.

Common Fat Boy upgrades

Seats and body parts lead the grid, with Mustang Motorcycle solo and driver backrest seats and chrome pieces from Harddrive, including saddlebag support brackets. Progressive 465 Series shocks are available for Milwaukee-Eight Softails. Windshields from Slipstreamer and National Cycle add protection, Michelin Scorcher 11 front tires are listed for the Fat Boy, and Kuryakyn offers license plate mounts and trim.

Fitment notes

The Fat Boy changed with the 2018 Softail redesign. Pre-2018 bikes use a different frame, rear shocks and wheel setup from the Milwaukee-Eight models, so parts do not interchange freely. Check the year range on each listing and see Softail parts or Heritage Classic parts for related fitment.

Because the Fat Boy leans toward chrome and a rounded look, finish matters. Compare chrome, black and polished options across brands so the new pieces blend with what is already on the bike. Seat selection is just as important, so consider whether you ride solo most of the time or with a passenger who needs a backrest and pad.