| General information | 
  
    | Model | Harley-Davidson FLSTFI Fat Boy | 
    | Model year | 2004 | 
    | Category | Custom / cruiser | 
    | Rating | 4.0   See the detailed rating of design and look, maintenance cost, engine performance, etc. Compare with any other bike. | 
    
        | Engine and transmission | 
  
    | Displacement | 1449.0 ccm (88.42 cubic inches) | 
    | Engine type | V2, four-stroke | 
    | Power output | 62.5 HP (45.6  kW)) @ 5400 RPM | 
    | Torque | 102.0 Nm (10.4 kgf-m or 75.2 ft.lbs) @ 3500 RPM | 
    | Compression | 8.8:1 | 
    | Bore x stroke | 95.3 x 101.6 mm (3.8 x 4.0 inches) | 
    | Valves per cylinder | 2 | 
    | Fuel system | Injection | 
    | Fuel control | Double Overhead Cams/Twin Cam (DOHC) | 
    | Ignition | Single-fire, non-wasted, map-controlled spark ignition | 
    | Lubrication system | Dry sump, internally mounted, crank driven gerotor pressure and dual scavenge pump. | 
    | Cooling system | Air | 
    | Gearbox | 5-speed | 
    | Transmission type | Belt  (final drive) | 
    | Clutch | Wet 9-plate | 
    
        | Chassis, suspension, brakes and wheels | 
  
    | Rake (fork angle) | 32.0° | 
    | Trail | 147 mm (5.8 inches) | 
    | Front suspension | 41.3 mm | 
    | Front wheel travel | 130 mm (5.1 inches) | 
    | Rear suspension | Hidden, horizontal-mounted, coil-over shock | 
    | Rear wheel travel | 109 mm (4.3 inches) | 
    | Front tire | 90/90-16 | 
    | Rear tire | 150/80-16 | 
    | Front brakes | Single disc. Four-piston calipers. | 
    | Diameter | 292 mm (11.5 inches) | 
    | Rear brakes | Single disc. Four-piston calipers. | 
    | Diameter | 292 mm (11.5 inches) | 
    
        | Physical measures and capacities | 
  
    | Dry weight | 307.0 kg (676.8 pounds) | 
    | Weight incl. oil, gas, etc | 324.0 kg (714.3 pounds) | 
    | Power/weight ratio | 0.2036 HP/kg | 
    | Seat height | 645 mm (25.4 inches) If adjustable, lowest setting. | 
    | Overall length | 2396 mm (94.3 inches) | 
    | Ground clearance | 130 mm (5.1 inches) | 
    | Wheelbase | 1630 mm (64.2 inches) | 
    | Fuel capacity | 18.90 litres (4.99 US gallons) | 
    | Oil capacity | 3.30 litres (3.49 US quarts) | 
    
        | Other specifications | 
  
    | Color options | Vivid black, brilliant silver, sierra red, smokey gold, luxury blue, glacier white pearl, lava red sunglo, two-tone impact blue and vivid black, two-tone luxury teal and brilliant silver, two-tone sierra red and brilliant silver, two-tone smokey gold and | 
    | Comments | Black powder-coated engine with chrome covers; fat front forks; solid disc front and rear wheels; large chrome headlight with fork nacelle | 
| Update specs | Report missing specs or required updates. | 
    
        | Maintenance and service specs * | 
  
    | Engine oil | SAE 20W-50 | 
    | Oil filter | K & N  - KN-171B | 
    | Battery | GYZ20HL | 
    | Spark plugs | NGK DCPR7E, NGK DCPR7EIX | 
    | Idle speed | 1000  RPM | 
    | Sprockets | 32/70 (front/rear) | 
    | Belt teeth | 135 | 
    | Belt width | 1 1/8 | 
    | Fork tube size | 41 mm (1.6 inches) | 
| *) Always verify maintenance and service data with the bike owner's manual. | 
    
        | Further information | 
  | Insurance costs | Compare US insurance quotes from the nation's top providers. | 
| Maintenance | Find parts, fluids. filters, maintenance tools and service manuals at Amazon.com. | 
| Ask questions | Join the 04 Harley-Davidson FLSTFI Fat Boy discussion group or the general Harley-Davidson discussion group. | 
| Related bikes | List related bikes for comparison of specs. | 
    
        | Compare with another motorcycle | 
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