Motorcycles Specs > Harley-Davidson > Harley-Davidson Softail Fat Boy

Harley-Davidson Softail Fat Boy Specs

(2017)
The Harley-Davidson Softail Fat Boy model is a Custom / cruiser bike manufactured by Harley-Davidson . In this version sold from year 2017 , the dry weight is 320.0 kg (705.5 pounds) and it is equipped with a V2, four-stroke motor. The engine produces a maximum peak output power of 75.00 HP (54.7 kW)) @ 5020 RPM and a maximum torque of 126.00 Nm (12.8 kgf-m or 92.9 ft.lbs) @ 3000 RPM . With this drive-train, the Harley-Davidson Softail Fat Boy is capable of reaching a maximum top speed of  . On the topic of chassis characteristics, responsible for road holding, handling behavior and ride comfort, the Harley-Davidson Softail Fat Boy has a  frame with front suspension being Telescopic fork and at the rear, it is equipped with Twin shocks . Stock tire sizes are 140/75-R17 on the front, and 200/55-R17 on the rear. As for stopping power, the Harley-Davidson Softail Fat Boy braking system includes Double disc. ABS. 4-piston. size  at the front and Single disc. ABS. 2-piston. size  at the back. 

Harley-Davidson Softail Fat Boy General Information

Brand Harley-Davidson 
Model Harley-Davidson Softail Fat Boy 
Start year 2017 
Year 2017 
Category Custom / cruiser 
Factory Warranty (Years / miles)

Harley-Davidson Softail Fat Boy Dimensions, Aerodynamics and weight

Frame type
Seat details
Wheelbase 1,690 mm (66.5 inches) 
Length 2,396 mm (94.3 inches) 
Width
Height
Seat Height 670 mm (26.4 inches) If adjustable, lowest setting. 
Alternate Seat Height
Ground Clearance 130 mm (5.1 inches) 
Trail size 147 mm (5.8 inches) 
Wheels details Mirror Chrome Aluminum Bullet Hole Disc 
Front Tyres - Rims dimensions 140/75-R17 
Rear Tyres - Rims dimensions 200/55-R17 
Front brakes Double disc. ABS. 4-piston. 
Rear brakes Single disc. ABS. 2-piston. 
Front Brakes Dimensions - Disc Dimensions
Rear Brakes Dimensions - Disc Dimensions
Curb Weight (including fluids) 333.0 kg (734.1 pounds) 
Dry Weight 320.0 kg (705.5 pounds) 
Front Percentage of Weight
Rear Percentage of Weight
Weight-Power Output Ratio : 0.2344 HP/kg 
Fuel Tank Capacity 18.93 litres (5.00 gallons) 
Reserve Fuel Capacity
Carrying Details and Capacity
Front Suspension Telescopic fork 
Front Suspension Travel
Rear Suspension Twin shocks 
Rear Suspension Travel

Harley-Davidson Softail Fat Boy Engine and Transmission Technical Data

Engine type - Number of cylinders V2, four-stroke 
Engine details High Output Twin Cam 103B 
Fuel system Injection. Electronic Sequential Port Fuel Injection 
Engine size - Displacement - Engine capacity 1690.00 ccm (103.12 cubic inches) 
Bore x Stroke 98.4 x 111.1 mm (3.9 x 4.4 inches) 
Compression Ratio 9.6:1 
Number of valves per cylinder
Camshaft Valvetrain Configuration Double Overhead Cams/Twin Cam (DOHC) 
Maximum power - Output - Horsepower 75.00 HP (54.7 kW)) @ 5020 RPM 
Maximum torque 126.00 Nm (12.8 kgf-m or 92.9 ft.lbs) @ 3000 RPM 
Engine Maximum RPM
Cooling system Air 
Lubrication system
Engine oil capacity 3.30 litres (3.49 quarts) 
Exhaust system Chrome, over/under shotgun exhaust with dual mufflers 
Gearbox 6-speed 
Transmission type, final drive ratio Belt 
Clutch type Multi-plate with diaphragm spring in oil bath 
Driveline Primary chain, 34/46 ratio 

Harley-Davidson Softail Fat Boy Performance

Top Speed
Acceleration 0 to 100 km/h (0 to 62 mph)
Acceleration 0 to 400m (1/4 mile)
Recuperation 60 to 140 km/h in highest gear
Fuel Consumption - MPG - Economy - Efficiency 5.60 litres/100 km (17.9 km/l or 42.00 mpg) 
CO2 emissions 129.9 CO2 g/km. (CO2 - Carbon dioxide emission) 
Emissions

Harley-Davidson Softail Fat Boy Electrical Systems, Ignition and Equipment

Ignition Type
Electrical Details
Starter Type Electric 
Instruments Tank-mounted electronic speedometer with odometer, time-of-day clock on odometer, dual tripmeter, RPM/gear display, fuel gauge with low fuel warning light and countdown feature, low oil pressure indicator light, engine diagnostics readout, LED indicator lights, 6-speed indicator light 
Lights High beam, neutral, low oil pressure, turn signals, engine diagnostics, security system (optional), 6-speed, low fuel warnings 
How much horsepower does a Harley-Davidson Softail Fat Boy have?
The Harley-Davidson Softail Fat Boy has 75.00 HP (54.7 kW)) @ 5020 RPM.

How much does a Harley-Davidson Softail Fat Boy weighs?
The Harley-Davidson Softail Fat Boy weighs 320.0 kg (705.5 pounds).

How tall (seat height) is a Harley-Davidson Softail Fat Boy?
The Harley-Davidson Softail Fat Boy seat height is 670 mm (26.4 inches) If adjustable, lowest setting.

How many gears does a Harley-Davidson Softail Fat Boy have?
The Harley-Davidson Softail Fat Boy have 6 gears.