‹ Home › Inventory › 2025 Harley-Davidson® Fat Boy® FLFB

*ANY ADDITIONAL PARTS INSTALLED ON THE BIKE WILL NOT BE REFLECTED IN THE SHOWN PRICE, PRICE ONLY REFLECTS MSRP WHICH INCLUDES COLOR AND TRIM OPTIONS. 2025 Harley-Davidson® Fat Boy® Features may include: PAINT The 2025 Fat Boy® features world-class factory paint wrapping a classic five-gallon tank, now adorned with a bold new medallion that stands out on every ride. WHEELS Equipped with 18-inch machined Lakester cast aluminum wheels and massive Michelin® Scorcher 11 tires, the Fat Boy® delivers a powerful stance and commanding presence. HEADLAMP NACELLE The iconic Fat Boy® headlight nacelle shines in bright polished chrome, accentuating the large and muscular look of the front end. MILWAUKEE-EIGHT® 117 CUSTOM V-TWIN ENGINE The new Milwaukee-Eight® 117 Custom V-Twin engine delivers 104 horsepower and 126 ft-lb of torque, providing robust performance for both highway cruising and in-town riding. TWO-INTO-TWO EXHAUST A key feature of the Fat Boy® design, the two-into-two exhaust system has been updated for high-flowing performance and a rich V-twin sound. RETUNED REAR SUSPENSION The updated monoshock rear suspension offers improved comfort while maintaining firm and composed handling during aggressive riding. SELECTABLE RIDE MODES New selectable ride modes, including Road, Rain, and Sport, allow riders to fine-tune their experience for varying conditions. FIVE-INCH ANALOG DISPLAY The five-inch display features a large, easy-to-read analog gauge positioned above an LCD screen, providing clear information at a glance. HAND CONTROLS Updated hand controls enhance ergonomics and provide quick access to ride modes and other features, improving overall rider comfort and control. 2025 COLOR OPTIONS (Fat Boy®) Billiard Gray Vivid Black Blue Burst Whiskey Fire/Vivid Black For more information or to check availability, click here to view the full listing or contact McGrath Quad Cities Harley-Davidson® today!

Specifications

Dimensions

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- Length:
  
  93.1 in
- Seat height, unladen:
  
  26.6 in
- Ground clearance:
  
  4.9 in
- Trail:
  
  4.1 in
- Wheelbase:
  
  65.0 in
- Tires, front specifications:
  
  160/60R18,70V,BW
- Tires, rear specifications:
  
  240/40R18,79V,BW
- Fuel Capacity:
  
  5.0 gal
- Oil capacity:
  
  5 qt.
- Weight, as shipped:
  
  668 lbs
- Weight, in running order:
  
  694 lb
- Tire, type:
  
  Michelin® Scorcher 11 front and rear
Engine

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- Engine:
  
  Milwaukee-Eight® 117 Custom
- Bore:
  
  4.1 in
- Stroke:
  
  4.5 in
- Displacement:
  
  117.35 in³
- Compression ratio:
  
  10.3:1
- Fuel system:
  
  Electronic Sequential Port Fuel Injection (ESPFI)
- Exhaust:
  
  2-into-2 staggered; catalyst in muffler
Performance

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- Engine torque testing method:
  
  EC 134/2014
- Engine torque:
  
  126.1 ft-lb
- Engine torque (RPM):
  
  3000
- Horsepower:
  
  104 HP / 77 kW @ 4800 rpm
- Lean angle, right (deg.):
  
  25.6
- Lean angle, left (deg.):
  
  25.6
- Fuel economy testing method:
  
  EU 134/2014
- Fuel economy:
  
  47 mpg (5 l/100 km)
Powertrain

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- Primary drive:
  
  Chain, 34/46 ratio
- Gear ratios (overall) 1st:
  
  9.311
- Gear ratios (overall) 2nd:
  
  6.454
- Gear ratios (overall) 3rd:
  
  4.793
- Gear ratios (overall) 4th:
  
  3.882
- Gear ratios (overall) 5th:
  
  3.307
- Gear Ratios (overall) 6th:
  
  2.79
Chassis

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- Front fork:
  
  Dual-bending valve 49 mm telescopic with aluminum fork triple clamps; dual rate spring; "beer can" covers
- Rear shocks:
  
  Hidden, free piston, coil-over monoshock; 43mm stroke; hydraulic preload adjustment
- Wheels, front type:
  
  Machined, Lakester cast aluminum
- Wheels, rear type:
  
  Machined, Lakester cast aluminum
- Brakes, type:
  
  Front and rear silver, Split 7-spoke floating rotors
- Brakes, caliper type:
  
  4-piston fixed front and 2-piston floating rear