The Harley-Davidson FLSTFB Fat Boy Special motorcycle specifications include a 1,584 cc (96.66 cu in) engine, a 6-speed gearbox, and a listed weight of 318 kg (701.1 lb).
Key specifications
The 2011 model is treated as the standard specification. Only later model years with a different supplied value are shown below.
How the Harley-Davidson FLSTFB Fat Boy Special compares
This compares the motorcycle with all Harley-Davidson models in this specifications database. The blue marker is this model and the grey line is the Harley-Davidson database average.
About 24% higher than the Harley-Davidson database average. Around the 78th percentile across Harley-Davidson models.
Very close to the Harley-Davidson database average. Around the 48th percentile across Harley-Davidson models.
About 11% larger than the Harley-Davidson database average. Around the 58th percentile across Harley-Davidson models.
Harley-Davidson database percentile rankings
Percentiles show where this motorcycle sits across the Harley-Davidson specifications database. They are descriptive database rankings, not performance ratings.
1,584 cc — larger displacement than about 78% of Harley-Davidson models.
680 mm — taller than about 48% of Harley-Davidson models.
18.9 L — larger than about 58% of Harley-Davidson fuel tanks in this database.
Dimensions compared with Harley-Davidson average
Each measurement is compared with the average value across Harley-Davidson models where that dimension is available.
2,385
2,376
Close to average.
1,085
1,208
10% below average.
1,630
1,599
Close to average.
680
689
Close to average.
125
128
Close to average.
Mechanical overview
Additional useful specifications
| Front tire size | 140/75-R17 |
|---|---|
| Rear tire size | 200/55-R17 |
| Bore/stroke ratio | 0.86:1 (Undersquare) |
Engine specifications
| Engine type | V2, four-stroke |
|---|---|
| Displacement | 1,584 cc (96.66 cu in) |
| Torque | 126.0 Nm (12.8 kgf-m or 92.9 ft.lbs) @ 3,500 rpm |
| Bore × stroke | 95.3 x 111.1 mm (3.8 x 4.4 inches) |
| Compression ratio | 9.2:1 |
| Valves per cylinder | 2.0 |
| Cooling system | Air |
| Fuel system | Injection. Electronic Sequential Port Fuel Injection (ESPFI) |
| Fuel control | Overhead Valves (OHV) |
| Starter | Electric |
| Lubrication | Pressurized, dry-sump |
Transmission and drivetrain
| Gearbox | 6-speed |
|---|---|
| Final drive | Belt (final drive) |
| Clutch | Multi-plate, wet |
Chassis and suspension
| Frame | Mild steel tubular frame; rectangular section backbone; stamped, cast, |
|---|---|
| Front suspension | 41.3 mm telescopic, “beer can” covers |
| Rear suspension | Hidden, horizontal-mounted, coil-over |
| Front wheel travel | 130 mm (5.1 inches) |
| Rear wheel travel | 91 mm (3.6 inches) |
| Rake | 31.6° |
| Trail | 147 mm (5.8 inches) |
Brakes, wheels and tires
| Front brakes | Single disc. 4-piston |
|---|---|
| Rear brakes | Single disc |
| Front tire | 140/75-R17 |
| Rear tire | 200/55-R17 |
| Wheels | Black, Bullet Hole Disc Cast Aluminum (HDI, BRZ) |
Dimensions and weight
| Dry weight | 318 kg (701.1 lb) |
|---|---|
| Seat height | 680 mm (26.8 inches) |
| Overall length | 2,385 mm (93.9 inches) |
| Overall height | 1,085 mm (42.7 inches) |
| Wheelbase | 1,630 mm (64.2 inches) |
| Ground clearance | 125 mm (4.9 inches) |
Fuel and emissions
| Fuel capacity | 18.90 L (4.99 US gal) |
|---|
Electrical and instruments
| Electrical | Sealed, maintenance-free, 12V battery. |
|---|---|
| Instruments | Tank-mounted electronic speedometer with odometer, time-of-day clock on odometer, dual tripmeter, fuel gauge with low fuel warning light and countdown feature, low oil pressure indicator light, engine diagnostics readout, LED indicator lights, 6-speed ind |
Disclaimer: Specifications may vary by market, trim, production date and optional equipment, and scraped or historical data can contain errors. Comparison and percentile values are calculated from Harley-Davidson models in this specifications database. Always double-check important specifications against the motorcycle owner’s/service manual and official Harley-Davidson information before relying on them. Visit the official Harley-Davidson website.