Yamaha SR400 - 2015 Specifications and Reviews

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.

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General information

CategoryAllround
Year2015
ModelYamaha SR400
 
 

Engine and Transmission Specifications

ClutchWet, Multiple Disc
Transmission type,final driveChain
Gearbox5-speed
Cooling systemAir
Lubrication systemWet-sump
Fuel controlSingle Overhead Cams (SOHC)
Fuel systemInjection
Valves per cylinder2
Bore x Stroke87.0 x 67.2 mm (3.4 x 2.6 inches)
Compression8.5:1
Torque27.40 Nm (2.8 kgf-m or 20.2 ft.lbs) @ 3000 RPM
Power22.93 HP (16.7 kW) @ 6500 RPM
Engine typeSingle cylinder, four-stroke
Capacity:399.00 ccm (24.35 cubic inches)
 
 

Brakes, suspension, Frame and wheels

Rear brakes diameter130 mm (5.1 inches)
Rear brakesExpanding brake (drum brake)
Front brakes diameter260 mm (10.2 inches)
Front brakesSingle disc
Rear tyre110/90-18
Front tyre90/100-18
Rear wheel travel125 mm (4.9 inches)
Rear SuspensionDual shocks
Front wheel travel150 mm (5.9 inches)
Front SuspensionTelescopic fork
Trail111 mm (4.4 inches)
Rake (fork angle)24.7°
Frame typeSteel Double Cradle

Physical measures and capacities

Oil capacity2.40 litres (0.16 quarts)
Fuel capacity12.00 litres (3.17 gallons)
Wheelbase1,410 mm (55.5 inches)
Ground clearance140 mm (5.5 inches)
Overall width750 mm (29.5 inches)
Overall length2,085 mm (82.1 inches)
Seat height790 mm (31.1 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc174.0 kg (383.6 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
StarterKick
Color optionsBlack, grey

Performance Profile & Rider Fit

22.9 hp
Peak Power
9.5s
0-60 mph

Best For

Track10%
City75%
Cornering50%
Daily Riding55%
Touring25%
Passenger30%

Rider Profile

Best ForA friendly, low-intimidation single that suits newer riders or experienced riders wanting a simple, analog machine.
PurposeBuilt for classic-styled city riding, short jaunts, and enjoying the mechanical simplicity of a kick-start single rather than for outright performance.
Rider FitLight weight and a moderate seat height make it easy for shorter or less physically strong riders to manage at low speed and in traffic.
CharacterA charming, old-school retro roadster that rewards relaxed, unhurried riding with plenty of mechanical character.
Not Ideal ForNot suited for highway touring, two-up long distances, or riders wanting strong acceleration and modern performance.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2015 Yamaha SR400 Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 790mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2015 Yamaha SR400, with a relaxed knee angle of around 120 degrees and a forward-leaning riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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