Darker and lower, the Fat Boy® Lo retains the bold presence of the Fat Boy® while offering a fresh interpretation of the motorcycle that still defines the segment. A re-shaped seat and lowered suspension combine to produce the lowest seat height of any Harley-Davidson® model, just 24.25 inches.

The Softail® rear suspension mimics the clean lines of a vintage hardtail frame but offers the comfort of a modern suspension that is hidden under the chassis. The rigid powertrain allows tight packaging of the engine and frame and creates a solid connection between the rider and the power that moves the motorcycle.

Engine
Engine4 Air-cooled, Twin Cam 96BTM
Valves Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters; two valves per cylinder
Bore x Stroke 3.75 in. x 4.38 in.
(95.25 mm x 111.25 mm)
Displacement3 96 cu. in. (1584 cc)
Compression Ratio 9.2:1
Fuel System5 Electronic Sequential Port Fuel Injection (ESPFI)
Air Cleaner Paper, washable
Lubrication System Pressurized, dry-sump

Drivetrain
Primary Drive Chain, 34/46 ratio
Final Drive6 Belt, 32/66 ratio
Clutch Multi-plate, wet
Transmission 6-Speed Cruise Drive®
U.S. Gear Ratios (overall):
o 1st 9.311
o 2nd 6.454
o 3rd 4.793
o 4th 3.882
o 5th 3.307
o 6th 2.790

Chassis
Frame Mild steel tubular frame; rectangular section backbone; stamped, cast, and forged junctions; forged fender supports; MIG welded
Swingarm Mild steel, round tube sections, forged junctions; MIG welded
Front Forks 41.30 mm telescopic, "beer can" covers
Rear Shocks Hidden, horizontal-mounted, coil-over
Wheels7: Black, Bullet Hole Disc Cast Aluminum
o Front 17 in. x 3.50 in. (431.80 mm x 88.90 mm)
o Rear 17 in. x 6 in. (431.80 mm x 152.40 mm)
Brakes:
o Caliper Type 4-piston front and 2-piston rear
o Rotor Type (diameter x width): Patented, uniform expansion rotors
o Front 11.50 in. x .20 in. (292.10 mm x 5.08 mm)
o Rear 11.50 in. x .23 in. (292.10 mm x 5.84 mm)
Suspension Travel:
o Front Wheel 5.10 in. (129.54 mm)
o Rear Wheel 3.60 in. (91.44 mm)

Performance
Engine Torque (per SAE J1349):
o North America 93.67 ft. lbs. @ 3000 rpm (127.0 Nm @ 3000 rpm)

Lean Angle (per SAE J1168):
o Right 25.6°
o Left 25.2°

Fuel Economy
(EPA urban/highway test) 35/54 mpg (6.72/4.36 L/100 km)

Electric
Battery (per Battery Council International Rating) Sealed, maintenance-free, 12V, 19-amp/hour, 270 cca
Charging Three-phase, 38-amp system (439W @ 13V, 2000 rpm, 489W max power @ 13V)
Starting 1.2 kW electric with solenoid shift starter motor engagement
Lights (as per country regulation):
o Headlamp (quartz halogen) 55-watt low beam, 60-watt high beam
o Tail/Stop Lights 8W/28W (5W/21W)
o Turn Signal Lights 28W (21W) self-canceling
o Indicator Lamps High beam, neutral, low oil pressure, turn signals, engine diagnostics, security system8 (optional), 6-speed, low fuel warnings

Dimensions
Length 94.30 in. (2395.22 mm)
Overall Width 39.20 in. (995.68 mm)
Overall Height 44.30 in. (1125.22 mm)
Seat Height:
o Laden2 24.25 in. (615.95 mm)
o Unladen 26.35 in. (669.29 mm)
Ground Clearance 4.80 in. (121.92 mm)
Rake (steering head) 31.6°
Fork Angle 31.6°
Trail 5.80 in. (147.32 mm)
Wheelbase 64.50 in. (1638.30 mm)
Tires (Dunlop® Harley-Davidson Series, radial blackwall front and rear):
o Front - D408F 140/75R17 67V
o Rear - D407 200/55R17 78V
Fuel Capacity 5 gal. (18.93 L) (warning light at approximately 1 gal.)
Oil Capacity (w/filter) 3.50 qts. (3.31 L)
Transmission Capacity 1 qts. (0.95 L)
Primary Chain Case Capacity3 1 qts. (0.95 L)

Weight:
o As Shipped 700 lbs. (317.52 kg)
o In Running Order 731.25 lbs. (331.70 kg)
o Gross Vehicle Weight Rating 1160 lbs. (526.18 kg)
o Gross Axle Weight Rating:
o Front 430 lbs. (195.05 kg)
o Rear 730 lbs. (331.13 kg)