Touring Motorcycles
2006Harley-Davidson FLHRSI Road King Custom
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The 2006 Harley-Davidson FLHRSI Road King Custom is a heavyweight cruiser designed for riders seeking classic styling with modern reliability. Its fuel-injected 1442cc V-twin engine delivers strong low-end torque ideal for highway cruising and city riding. Best known for its iconic Road King heritage and comfortable, commanding riding position, this custom appeals to experienced riders valuing tradition and performance.
- Capacity
- 1442.2 ccm
- Engine
- V-Twin
- Gearbox
- 5-speed
- Dry weight
- 327.0 kg
- Seat height
- 663 mm
- Power
- 67.0 HP (49.3 kW)
What’s new for the 2006 Harley-Davidson FLHRSI Road King Custom
vs the 2005| Spec | 2005 | 2006 |
|---|---|---|
| Engine capacity | 1449.0 ccm (88.42 cubic inches) | 1442.2 ccm (88.01 cubic inches) |
| Torque | 109.0 Nm (11.1 kgf-m or 80.4 ft.lbs) | 116.6 Nm (11.9 kgf-m or 86.0 ft.lbs) |
| Top speed | — | 292.0 km/h (181.4 mph) |
| Dry weight | 332.0 kg (731.9 pounds) | 327.0 kg (720.9 pounds) |
| Wheelbase | 1592 mm (62.7 inches) | 1613 mm (63.5 inches) |
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built for relaxed highway cruising and long-distance touring rather than outright speed or sharp handling.
- Built for
- A classic American cruiser character defined by big V-twin torque, a relaxed riding posture, and long-haul comfort over aggressive performance.
- Not ideal for
- Not a good fit for riders seeking nimble cornering, off-road capability, or lightweight everyday commuting.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Will it fit you?
Worked out in your browser - nothing is sent to usEngine
- Capacity
- 1442.2 ccm
- Power
- 67.0 HP (49.3 kW)
- Torque
- 116.6 Nm (11.9 kgf-m)
- Engine type
- V-Twin
- Power/weight ratio
- 0.2049 HP/kg
- Bore x stroke
- 95.3 x 101.6 mm
- Compression
- 8.8:1
- Cooling system
- Air
- Fuel system
- Injection
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Final drive
- Belt
- Clutch
- Multi-plate with diaphragm spring in oil bath
Performance
- Top speed
- 292.0 km/h (181.4 mph)
Dimensions & weight
- Wheelbase
- 1613 mm
- Overall length
- 2380 mm
- Seat height
- 663 mm
- Dry weight
- 327.0 kg
- Wet weight
- 341.1 kg
- Fuel capacity
- 18.90 litres
- Ground clearance
- 119 mm
Chassis & suspension
- Rake (fork angle)
- 26.0°
- Trail
- 157 mm
Brakes & wheels
- Front brakes
- Double disc
- Front brakes diameter
- 292 mm
- Rear brakes
- Single disc
- Front tyre
- MT90-B16
- Rear tyre
- MU85-B16
Other
- Color options
- Vivid black, black cherry, black pearl, deep cobalt, glacier white pearl, rich sunglo blue, yellow pearl, brandy wine sunglo
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
What changed, year to year
Differences highlighted| Specification | 2004 | 2005 | 2006 |
|---|---|---|---|
| Capacity | 1449 cc | 1449 cc | 1442 cc |
| Dry weight | 332 kg | 332 kg | 327 kg |
| Seat height | 663 mm | 663 mm | 663 mm |
| Fuel capacity | 18.9 L | 18.9 L | 18.9 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the Harley-Davidson FLHRSI Road King Custom?
The 2006 Harley-Davidson FLHRSI Road King Custom has a Capacity of 1442.2 ccm (88.01 cubic inches).
What engine power does the Harley-Davidson FLHRSI Road King Custom have?
The 2006 Harley-Davidson FLHRSI Road King Custom has a Power of 67.0 HP (49.3 kW).
How many gears does the Harley-Davidson FLHRSI Road King Custom have?
The 2006 Harley-Davidson FLHRSI Road King Custom has a Gearbox of 5-speed.
What is the torque of the Harley-Davidson FLHRSI Road King Custom?
The 2006 Harley-Davidson FLHRSI Road King Custom has a Torque of 116.6 Nm (11.9 kgf-m or 86.0 ft.lbs).
How much does the Harley-Davidson FLHRSI Road King Custom weigh?
The 2006 Harley-Davidson FLHRSI Road King Custom has a Dry weight of 327.0 kg (720.9 pounds).
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