2011Harley-Davidson FLSTFB Fat Boy Lo

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The 2011 Harley-Davidson FLSTFB Fat Boy Lo is a low-slung custom cruiser designed for riders seeking aggressive styling with accessible ergonomics. Its 1584cc Twin Cam 96B engine delivers substantial torque for effortless cruising, while the lowered stance and classic fat-tire aesthetic define the model's iconic character and appeal to traditional cruiser enthusiasts.

Capacity: 1584.0 ccm
Engine: V-Twin, four-stroke
Gearbox: 6-speed
Dry weight: 317.5 kg
Seat height: 669 mm
Power: 75.0 HP (55.2 kW)

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How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail5%

Cornering25%

City riding50%

Daily riding60%

Touring45%

Two-up40%

Track5%

Best for: Built for laid-back boulevard cruising and making a bold styling statement rather than outright performance.
Built for: A classic, chopped-look Fat Boy Lo with deep torque delivery, heavy chrome-and-black styling, and a thumping air-cooled V-twin soundtrack.
Not ideal for: Not the right choice for riders wanting agile cornering, high-speed touring comfort, or any off-road capability.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

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Your height

Inseam (optional)

Units

At 669mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2011 Harley-Davidson FLSTFB Fat Boy Lo, with a cramped knee angle of around 75 degrees and an upright riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at 750 mm or under — Short Kings →

Find bikes that fit your height →

Full specifications

Engine

Capacity: 1584.0 ccm
Power: 75.0 HP (55.2 kW)
Torque: 127.0 Nm (13.0 kgf-m) @ 3000 RPM
Engine type: V-Twin, four-stroke
Power/weight ratio: 0.2362 HP/kg (dry)
Bore x stroke: 95.3 x 111.1 mm
Compression: 9.2:1
Cooling system: Air
Fuel system: Injection
Starting: Electric
Valves per cylinder: 2
Lubrication system: Pressurized, dry-sump

Transmission

Gearbox: 6-speed
Transmission type: Manual
Final drive: Belt
Clutch: 9-plate, wet

Dimensions & weight

Wheelbase: 1638 mm
Overall length: 2395 mm
Seat height: 669 mm
Dry weight: 317.5 kg
Fuel capacity: 19.70 litres
Ground clearance: 122 mm
Oil capacity: 3.10 litres

Chassis & suspension

Frame: Mild steel tubular frame; rectangular section backbone; stamped, cast, and forged junctions; forged fender supports; MIG welded.
Front suspension: 41.3mm telescopic, beer can covers
Rear suspension: Hidden, horizontal-mounted, coil-over
Front wheel travel: 130 mm
Rear wheel travel: 91 mm
Rake (fork angle): 32.0°
Trail: 147 mm