Naked Motorcycles
2015Yamaha SR400
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The 2015 Yamaha SR400 is a lightweight, air-cooled retro roadster that appeals to riders seeking simplicity and classic styling. Its kick-start single-cylinder engine and minimalist design emphasize rider engagement and mechanical transparency. Best known for its affordable entry point into motorcycling and timeless neo-vintage aesthetic, the SR400 suits casual commuters and enthusiasts valuing character over performance.
- Capacity
- 399.0 ccm
- Engine
- Single, four-stroke
- Gearbox
- 5-speed
- Dry weight
- 152.0 kg
- Seat height
- 790 mm
- Power
- 22.9 HP (16.7 kW) @ 6500 RPM
What’s new for the 2015 Yamaha SR400
vs the 2014| Spec | 2014 | 2015 |
|---|---|---|
| Front brakes | Single disc. 2-piston calipers | Single disc |
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built for classic-styled city riding, short jaunts, and enjoying the mechanical simplicity of a kick-start single rather than for outright performance.
- Built for
- A charming, old-school retro roadster that rewards relaxed, unhurried riding with plenty of mechanical character.
- Not ideal for
- Not suited for highway touring, two-up long distances, or riders wanting strong acceleration and modern performance.
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
- 399.0 ccm
- Power
- 22.9 HP (16.7 kW) @ 6500 RPM
- Torque
- 27.4 Nm (2.8 kgf-m) @ 3000 RPM
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.1507 HP/kg (dry)
- Bore x stroke
- 87.0 x 67.2 mm
- Compression
- 8.5:1
- Cooling system
- Air
- Fuel system
- Injection
- Starting
- Kick
- Ignition
- TCI
- Valves per cylinder
- 2
- Lubrication system
- Wet-sump
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Wet, Multiple Disc
Dimensions & weight
- Wheelbase
- 1410 mm
- Overall length
- 2085 mm
- Overall width
- 750 mm
- Overall height
- 1098 mm
- Seat height
- 790 mm
- Dry weight
- 152.0 kg
- Wet weight
- 174.0 kg
- Fuel capacity
- 12.00 litres
- Ground clearance
- 140 mm
- Oil capacity
- 2.40 litres
Chassis & suspension
- Frame
- Steel Double Cradle
- Front suspension
- Telescopic fork
- Rear suspension
- Dual shocks
- Front wheel travel
- 150 mm
- Rear wheel travel
- 125 mm
- Rake (fork angle)
- 24.7°
- Trail
- 111 mm
Brakes & wheels
- Front brakes
- Single disc
- Front brakes diameter
- 260 mm
- Rear brakes
- Expanding brake (drum brake)
- Rear brakes diameter
- 130 mm
- Front tyre
- 90/100-18
- Rear tyre
- 110/90-18
Other
- Color options
- Black, grey
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 | 2002 | 2006 | 2012 | 2015 | 2019 |
|---|---|---|---|---|---|
| Capacity | 399 cc | 399 cc | 399 cc | 399 cc | 399 cc |
| Dry weight | 152 kg | 152 kg | 152 kg | 152 kg | 152 kg |
| Seat height | 790 mm | 790 mm | 790 mm | 790 mm | 785 mm |
| Fuel capacity | 12 L | 12 L | 12 L | 12 L | 12 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 Yamaha SR400?
The 2015 Yamaha SR400 has a Capacity of 399.0 ccm (24.35 cubic inches).
What engine power does the Yamaha SR400 have?
The 2015 Yamaha SR400 has a Power of 22.9 HP (16.7 kW) @ 6500 RPM.
How many gears does the Yamaha SR400 have?
The 2015 Yamaha SR400 has a Gearbox of 5-speed.
What is the torque of the Yamaha SR400?
The 2015 Yamaha SR400 has a Torque of 27.4 Nm (2.8 kgf-m or 20.2 ft.lbs) @ 3000 RPM.
How much does the Yamaha SR400 weigh?
The 2015 Yamaha SR400 has a Dry weight of 152.0 kg (335.1 pounds).
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