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2025

Fat Boy^®

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2025 Fat Boy^®

Adored since day one, the singular Fat Boy stands out with bright chrome and bold finishes, and now it is better than ever with a big Milwaukee-Eight^® 117 Custom V-twin engine.

Billiard Gray
Vivid Black
Blue Burst
Whiskey Fire / Vivid Black
360

Disclaimer: Vehicle shown may vary visually by market and may differ from vehicles manufactured and delivered. Availability may vary by market, please see your local dealer for details.

Key features

Milwaukee-Eight® 117 Custom Engine

Milwaukee-Eight® 117 Custom V-twin engine delivers sound, feel, and all the power you need for effortless long-mile highway cruising or exhilarating in-town performance.

Specifications

Pricing

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- Base MSRP
  
  $22,599
- Vivid Black
  
  $350
- Premium Solids
  
  $650
- Two-Tone
  
  $850
- California Emissions
  
  $200
- Freight
  
  $730
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 in
- Tires, front specifications
  
  160/60R18,70V,BW
- Tires, rear specifications
  
  240/40R18,79V,BW
- Fuel Capacity
  
  5 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
  
  J1349
- 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
  
  Estimated City/Hwy
- 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
Color options

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- Billiard Gray
- Vivid Black
- Blue Burst
- Whiskey Fire / Vivid Black