The Harley-Davidson Dyna FXDF Fat Bob comes with a pretty unique name, but what’s more unique than its tag is the bike itself. This custom cruiser is made from the stuff that riders of all shapes and sizes absolutely crave.

With forward-mounted foot controls, a drag-style handlebar, and a sleek, two-up seat, the Fat Bob motorcycle creates an aggressive riding position that commands respect wherever it goes. Though it looks the part of a ’fat’ cruiser, the Dyna Fat Bob’s characteristics emphasize character aggression, highlighted by a 130 mm wide front tire with a gnarly, robust tread pattern. Fat Boy also sports a sporty front fender with painted brace supports, a Bobtail rear fender with chrome supports, a one-up, two-piece Dyna classic seat, a stainless steel drag-style handlebar, polished aluminum triple clamps, and a chrome, "Tommy Gun" 2-1-2 collector exhaust system with dual mufflers.

At the belly of the Dyna Fat Boy lies a powerful and new rubber-mounted 1690cc Twin Cam103 V-Twin engine with Electronic Sequential Port Fuel Injection (ESPFI). The engine is capable of delivering 92 lb/ft of torque, providing enough meat and grinds power to make other bikes of its class envious. Making it more impressive for the Dyna Fat Boy is that its engine has been mated to a six-speed Cruise Drive transmission, making that ride that much more impressive.

When Harley-Davidson designed the 2012 Dyna FXDF Fat Bob, they had one clear-cut mission in mind: to make the bike as fat and meaty as possible. Thanks to an aggressive neo-retro style and a spectacularly powerful engine, the American bike maker managed to exceed even their own lofty expectations.

Find out more about the Harley-Davidson Dyna FXDF Fat Bob after the jump.

  • 2012 Harley-Davidson Dyna FXDF Fat Bob
  • Year:
  • Make:
  • Model:
  • Model:
  • Engine:
    Twin Cam103 V-Twin engine
  • Transmission:
    six-speed Cruise Drive transmission
  • Torque @ RPM:
  • Displacement:
    1690 L

Model Hightlights

2012 Harley-Davidson Dyna FXDF Fat Bob High Resolution Exterior Wallpaper quality
- image 432547
  • Black powder-coated powertrain with

polished covers

  • Chrome, “Tommy Gun” 2-1-2 collector exhaust

with dual mufflers

  • 5-gallon Fat Bob fuel tank
  • Silver, Slotted Disc Cast Aluminum wheels
  • Sport front fender with painted brace supports
  • Bobtail rear fender with chrome supports
  • One-piece, two-up Dyna classic seat
  • Stainless steel drag-style handlebar on

black riser

  • Black fork lowers and mirrors
  • Polished aluminum triple clamps
  • High-performance, chrome-covered, coil-over

rear shocks

  • Chrome low-profile tank console with

electronic speedometer

  • Twin chrome headlamps

Key Features

2012 Harley-Davidson Dyna FXDF Fat Bob Exterior
- image 432550
  • 6-speed Cruise Drive transmission
  • Exposed under-seat battery box
  • Forward-mounted rider footpegs with brake and

shift levers

  • Optional Harley-Davidson Smart Security System with hands-free security fob


2012 Harley-Davidson Dyna FXDF Fat Bob High Resolution Exterior
- image 432552
Engine Air-cooled, Twin Cam 103
Displacement (in./cc) 103/1690
Fuel System Electronic Sequential Port
Fuel Injection (ESPFI)
Transmission 6-Speed Cruise Drive
Miles Per Gallon 42 MPG combined City/Hwy
Length (in./mm) 91.7/2329
Seat Height (laden) (in./mm) 26.1/663
Wheelbase (in./mm) 63.7/1618
Tire Dunlop Harley-Davidson Series, bias blackwall front and rear
• Front D427F 130/90B16 67H
• Rear D427 180/70B16 77H
• Front Machined Aluminum
Slotted Disc
16 in. x 3 in.
(406 mm x 76 mm)
• Rear Machined Aluminum
Slotted Disc
16 in. x 5 in.
(406 mm x 127 mm)
Fuel Capacity (U.S. gals/liters) 5/18.9
Weight as Shipped (lbs./kg) 673/305
Frame Mild steel, tubular frame; rectangular
section backbone; stamped, cast,
and forged junctions; forged fender
supports; MIG welded
Swingarm Mild steel, rectangular tube sections,
stamped junctions; MIG welded
Front Forks 49 mm with polished aluminum fork
triple clamp and dual-rate springs
Rear Shocks Fully Covered, Coil-over shock
Wheels: Machined Aluminum Slotted Disc
•Front 16 in. x 3 in. (406 mm x 76 mm)
•Rear 16 in. x 5 in. (406 mm x 127 mm)
•Caliper Type 4-piston fixed front, and 2-piston
torque-free floating rear
•Rotor Type Patented, uniform expansion rotors
(floating, front only)
•Anti-lock Braking System Available
Color Options
Solids Vivid Black, Big Blue Pearl, H-D Orange, Black Denim


Ultimate Motorcycling----"When Harley-Davidson designed the 2012 FXDF Fat Bob, that had one thing in mind - just what the name implies, Fat. With an aggressive style, double chrome headlight and 130-mm front tire, the 2012 Fat Bob arrives stock with that mean, custom look. Stock items from the Motor Company include forward controls, drag-style handlebars, and an exposed under-seat battery box. Out back, the Fat Bob features chrome-covered, coil-over shocks showcase the beefy 180 mm wide rear tire."

What do you think?
Show Comments


  (507) posted on 08.16.2012

If I were a motorcycle rider, I would also love to ride this kind of bike. With its components and style, everyone would crave for it.

  (1) posted on 08.9.2012

I started reading an article about a "Fat Bob" only to find erroneous references to a "Fat Boy". No matter, I recently purchased one of these 2012 versions and keep it stabled next to my 2012 HD FLHRC and 1999 HD FXSTB. The "Fat Bob" provides me with a great combination of both those bikes in one sweet package. Next items are some engine tweaks and visual candy...

  (296) posted on 01.13.2012

I can say that Harley-Davidson is really good at motorcycle manufacturing. This one looks stunning on its wheels and that suits the Dunlop tires that they have used. Anyway, I can’t seem to find its fuel capacity?

Motorcycle Finder: