The Harley-Davidson 1340 Softail Fat Boy motorcycle specifications include a 1,338 cc (81.64 cu in) engine, power of 48 hp (35.0 kW) @ 4,900 rpm, a 5-speed gearbox, and a listed weight of 304 kg (670.2 lb).
Key specifications
The 1993 model is treated as the standard specification. Only later model years with a different supplied value are shown below.
How the Harley-Davidson 1340 Softail Fat Boy 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 25% lower than the Harley-Davidson database average. Around the 20th percentile across Harley-Davidson models.
Very close to the Harley-Davidson database average. Around the 61st percentile across Harley-Davidson models.
Very close to the Harley-Davidson database average. Around the 45th percentile across Harley-Davidson models.
Very close to the Harley-Davidson database average. Around the 38th percentile across Harley-Davidson models.
About 6% smaller than the Harley-Davidson database average. Around the 33rd percentile across Harley-Davidson models.
Dimensions compared with Harley-Davidson average
Each measurement is compared with the average value across Harley-Davidson models where that dimension is available.
2,395
2,376
Close to average.
1,636
1,599
Close to average.
673
689
Close to average.
Mechanical overview
Additional useful specifications
| Front tire size | 140/75-R17 |
|---|---|
| Rear tire size | 200/55-R17 |
| Front tire pressure | 36 PSI (2.5 Bar or 250 kPa) |
| Rear tire pressure | 36 PSI (2.5 Bar or 250 kPa) |
| Engine oil | SAE 20W-50 |
| Engine oil capacity | 2.80 L (2.96 US qt) |
| Oil filter | K & N PG Black – KN-170 |
| Spark plug | NGK BPR5ES-11 |
| Power-to-weight ratio | 0.158 hp/kg |
| Power-to-weight | 157.9 hp/tonne |
| Specific power | 35.9 hp/L |
| Bore/stroke ratio | 1.00:1 (Square) |
Model information
| Category | Custom / cruiser |
|---|
Engine specifications
| Engine type | V2, four-stroke |
|---|---|
| Displacement | 1,338 cc (81.64 cu in) |
| Power | 48 hp (35.0 kW) @ 4,900 rpm |
| Torque | 86.3 Nm (8.8 kgf-m or 63.7 ft.lbs) @ 2,400 rpm |
| Bore × stroke | 99.1 x 99.1 mm (3.9 x 3.9 inches) |
| Compression ratio | 9.6:1 |
| Valves per cylinder | 2.0 |
| Cooling system | Air |
| Fuel system | Injection. Electronic Sequential Port Fuel Injection (ESPFI) |
| Starter | Electric |
| Engine oil | SAE 20W-50 |
| Oil capacity | 2.80 L (2.96 US qt) |
| Oil filter | K & N PG Black – KN-170 |
| Spark plugs | NGK BPR5ES-11 |
Transmission and drivetrain
| Gearbox | 5-speed |
|---|---|
| Final drive | Belt (final drive) |
| Clutch | Wet multi-disc, manual |
Chassis and suspension
| Front suspension | Telescopic fork |
|---|---|
| Rear suspension | Dual shocks |
| Fork tube size | 41 mm (1.6 inches) |
Brakes, wheels and tires
| Front brakes | Single disc. Four-piston calipers. |
|---|---|
| Rear brakes | Single disc. Two-piston calipers. |
| Front tire | 140/75-R17 |
| Rear tire | 200/55-R17 |
| Front tire pressure | 36 PSI (2.5 Bar or 250 kPa) |
| Rear tire pressure | 36 PSI (2.5 Bar or 250 kPa) |
Dimensions and weight
| Wet weight | 304 kg (670.2 lb) |
|---|---|
| Dry weight | 298 kg (657 lb) |
| Seat height | 673 mm (26.5 inches) |
| Overall length | 2,395 mm (94.3 inches) |
| Wheelbase | 1,636 mm (64.4 inches) |
Fuel and emissions
| Fuel capacity | 15.90 L (4.20 US gal) |
|---|
Performance
| Power/weight ratio | 0.1611 hp/kg |
|---|
Electrical and instruments
| Battery | YTX20L-BS |
|---|
Other specifications
| Brake fluid | DOT 5 Silicone |
|---|
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.