Harley-Davidson Softail Fat Boy Specs

2013 • 1 variants

The Harley-Davidson Softail Fat Boy is a cruiser produced from 2013 across 1 variant. Peak torque is 134 Nm.

About the Harley-Davidson Softail Fat Boy

The Harley-Davidson Softail Fat Boy is a Custom / cruiser motorcycle from Harley-Davidson, produced from 2013 to 2018. This page provides a comprehensive technical reference for the Harley-Davidson Softail Fat Boy, covering all available specification data including engine configuration, displacement, power output, dimensions, weight, and chassis details. Use the year selector above to find specifications for a specific model year. All data is sourced from manufacturer specifications and is intended as a technical reference for riders, mechanics, and enthusiasts.

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Harley-Davidson Softail Fat Boy by Year

Harley-Davidson Softail Fat Boy 2013 specs

2013 Harley-Davidson Softail Fat Boy View specs →

Spec Evolution

How key specs changed across production years.

Specification	2013	2014	2015	2016	2017	2018
Seat Height	Laden 635 mm / 25.0 in Unladen 690 mm / 27.1 in	Laden 635 mm / 25.0 in Unladen 690 mm / 27.1 in	Laden 635 mm / 25.0 in Unladen 690 mm / 27.1 in	Laden 635 mm / 25.0 in Unladen 690 mm / 27.1 in	Laden 635 mm / 25.0 in Unladen 690 mm / 27.1 in	675 mm / 26.4 in ↑
Displacement	1690 cc / 103.1 cub in.	1690 cc / 103.1 cub in.	1690 cc / 103.1 cub in.	1690 cc / 103.1 cub in.	1690 cc / 103.1 cub in.	1746 cc / 107 cub in ↑
Dry Weight	-	-	-	320 kg / 705 lbs	319 kg / 704 lbs ↓	304 kg kg / 670 lbs ↓
Wheelbase	1635 mm / 64.2 in	1635 mm / 64.2 in	1635 mm / 64.2 in	1635 mm / 64.2 in	1630 mm / 64.2 in ↓	1655 mm / 65.6 in ↑
Engine Detail	Four stroke, V-Twin, Twin Cam 103B Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters, two valves per cylinder, with Integrated Oil-Cooler	Four stroke, V-Twin, Twin Cam 103B Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters, two valves per cylinder, with Integrated Oil-Cooler	Four stroke, V-Twin, Twin Cam 103B Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters, two valves per cylinder, with Integrated Oil-Cooler	Four stroke, V-Twin, Twin Cam 103B Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters, two valves per cylinder, with Integrated Oil-Cooler	Four stroke, V-Twin, Twin Cam 103B Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters, two valves per cylinder, with Integrated Oil-Cooler	Four stroke, V-Twin, Milwaukee-Eight 107, Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters, 4 valves per cylinder ↑
Fuel Capacity	18.9 Litres / 5.0 US gal	18.9 Litres / 5.0 US gal	18.9 Litres / 5.0 US gal	18.9 Litres / US 5.0 gal	18.9 Litres / US 5.0 gal	18.9 Litres / 5.0 US gal
Ground Clearance	-	-	-	130 mm / 5.1 in	120 mm / 4.7 in ↓	115 mm / 4.5 in ↓
Suspension - Front	41.3 mm telescopic, chrome dust covers	41.3 mm telescopic, chrome dust covers	41.3 mm telescopic, chrome dust covers	41.3 mm telescopic, chrome dust covers	41.3 mm telescopic, chrome dust covers	Showa Inverted forks
Suspension - Rear	Hidden, horizontal-mounted, coil-over shock	Hidden, horizontal-mounted, coil-over shock	Hidden, horizontal-mounted, coil-over shock	Hidden, horizontal-mounted, coil-over shock	Hidden, horizontal-mounted, coil-over shock	Mono shock adjustable
Bore x Stroke	98.4 x 111.1 mm	98.4 x 111.1 mm	98.4 x 111.1 mm	98.4 x 111.1 mm	98.4 x 111.1 mm	100 x 111 mm ↑
Oil Capacity	3.3 Litres	3.3 Litres	3.3 Litres	3.3 Litres / 3.5 US qt	-	4.7 Litres / 5.0 US qt
Length	2396 mm / 94.3 in	2396 mm / 94.3 in	2396 mm / 94.3 in	2396 mm / 94.3 in	2390 mm / 94.1 in ↓	2370 mm / 93.3 in ↓
Wet Weight	329 kg / 725 lbs	329 kg / 725 lbs	329 kg / 725 lbs	331 kg / 730 lbs ↑	332 kg / 733 lbs ↑	317 kg / 699 lbs ↓
Compression Ratio	9.6:1	9.6:1	9.6:1	9.6:1	9.6:1	10.0:1 ↑
Tyres - Front	140/75R17 67V	140/75R17 67V	140/75R17 67V	140/75R17 67V	140/75R17 67V	160/60R18,70V,BW ↑
Tyres - Rear	200/55R17 78V	200/55R17 78V	200/55R17 78V	200/55R17 78V	200/55R17 78V	240/40R18,79V,BW ↑
Lean Angle	-	-	-	27°	27°	25.6° ↓
Rake	31°	31°	31°	31°	31°	30° ↓
Exhaust	Chrome, over/under shotgun exhaust with dual mufflers	Chrome, over/under shotgun exhaust with dual mufflers	Chrome, over/under shotgun exhaust with dual mufflers	Chrome, over/under shotgun exhaust with dual mufflers	Chrome, over/under shotgun exhaust with dual mufflers	2-into-2 staggered; catalyst in muffler
Wheels - Front	Silver, Bullet Hole Disc Cast Aluminum	Silver, Bullet Hole Disc Cast Aluminum	Silver, Bullet Hole Disc Cast Aluminum	Mirror chrome aluminum, bullet hole disc	Mirror chrome aluminum, bullet hole disc	Machined, Lakester cast aluminum
Wheels - Rear	Silver, Bullet Hole Disc Cast Aluminum	Silver, Bullet Hole Disc Cast Aluminum	Silver, Bullet Hole Disc Cast Aluminum	Mirror chrome aluminum, bullet hole disc	Mirror chrome aluminum, bullet hole disc	Machined, Lakester cast aluminum
Trail	147 mm / 5.8 in	147 mm / 5.8 in	147 mm / 5.8 in	147 mm / 5.8 in	147 mm / 5.8 in	104 mm / 4.1 in ↓
Max Torque	134 Nm / 13.7 kgf-m / 98.8 ft. lbs @ 3500 rpm	134 Nm / 13.7 kgf-m / 98.8 ft. lbs @ 3500 rpm	134 Nm / 13.7 kgf-m / 98.8 ft. lbs @ 3500 rpm	132 Nm / 13.4 kgf-m / 98.2 ft. lbs @ 3250 rpm ↓	132 Nm / 13.4 kgf-m / 98.2 ft. lbs @ 3250 rpm	148 Nm / 109 ft-lb @ 3000 rpm ↑

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