‹ Home › Inventory › 2025 Harley-Davidson® Fat Boy® Whiskey Fire / Vivid Black
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.
Specifications
Dimensions
addremove
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
addremove
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
addremove
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
addremove
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
addremove
Front fork:
Dual-bending valve 49 mm telescopic with aluminum fork triple clamps; dual rate spring; "beer can" covers