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UltimateSpecs.com   Cars Motorcycles
Motorcycles Specs > Harley-Davidson > Harley-Davidson Softail Fat Boy

Harley-Davidson Softail Fat Boy Specs

The Harley-Davidson Softail Fat Boy model is a Custom / cruiser bike manufactured by Harley-Davidson . In this version sold from year 2018 , the dry weight is 304.0 kg (670.2 pounds) and it is equiped with a V2, four-stroke motor. The engine produces a maximum peak output power of 86.00 HP (62.8 kW)) @ 5020 RPM and a maximum torque of 145.00 Nm (14.8 kgf-m or 107.0 ft.lbs) @ 3000 RPM . With this drive-train, the Harley-Davidson Softail Fat Boy is capable of reaching a maximum top speed of  . Regarding the chassis characteristics, responsible for road holding, handling behaviour and ride confort, the Harley-Davidson Softail Fat Boy have a  frame with front suspension being Telescopic fork and in the rear suspension it is equiped with Twin shocks . Stock tire sizes are 160/60-R18 on the front, and 240/40-R18 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 rear. 

Harley-Davidson Softail Fat Boy General Information

Brand Harley-Davidson 
Model Harley-Davidson Softail Fat Boy 
Year 2018 
Year 2018 
Category Custom / cruiser 
Factory Warranty (Years / miles)  

Harley-Davidson Softail Fat Boy Dimensions, Aerodynamics and weight

Frame type  
Seat details  
Wheelbase 1,665 mm (65.6 inches) 
Length 2,370 mm (93.3 inches) 
Width  
Height  
Seat Height 675 mm (26.6 inches) If adjustable, lowest setting. 
Alternate Seat Height  
Ground Clearance 115 mm (4.5 inches) 
Trail size 104 mm (4.1 inches) 
Wheels details Machined, Lakester cast aluminum 
Front Tyres - Rims dimensions 160/60-R18 
Rear Tyres - Rims dimensions 240/40-R18 
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) 317.0 kg (698.9 pounds) 
Dry Weight 304.0 kg (670.2 pounds) 
Front Percentage of Weight  
Rear Percentage of Weight  
Weight-Power Output Ratio : 0.2829 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 Milwaukee-Eight 107, optionally 114 Big Twin 
Fuel system Injection. Electronic Sequential Port Fuel Injection 
Engine size - Displacement - Engine capacity 1745.00 ccm (106.48 cubic inches) 
Bore x Stroke 100.0 x 111.1 mm (3.9 x 4.4 inches) 
Compression Ratio 10.0:1 
Number of valves per cylinder  
Camshaft Valvetrain Configuration Double Overhead Cams/Twin Cam (DOHC) 
Maximum power - Output - Horsepower 86.00 HP (62.8 kW)) @ 5020 RPM 
Maximum torque 145.00 Nm (14.8 kgf-m or 107.0 ft.lbs) @ 3000 RPM 
Engine Maximum RPM  
Cooling system Air 
Lubrication system  
Engine oil capacity 4.70 litres (0.31 quarts) 
Exhaust system 2-into-2 staggered; catalyst in header 
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