At the heart of the 1987 Yamaha SRX 250 touring motorcycle, Yamaha utilizes a 250 cc (15.3 cu in) air-cooled single cylinder, four-stroke layout. In factory specification, peak output is rated at 17 HP (12.4 kW) at 9,000 rpm, transferring power to the rear wheel through a 6-speed gearbox and belt final drive. With a specific output of 68 HP per liter, the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.
On the scales, the SRX 250 measures 137 kg (302 lbs) wet (curb), translating to a power-to-weight ratio of 0.12 HP/kg (8.06 kg per horsepower). Rider ergonomics and chassis geometry center around a 780 mm (30.7 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance.
Specific Output
68 HP/L
Power-to-Weight
0.12 HP/kg (8.06 kg/HP)
Standover Height
780 mm (30.7 in)
Engine
Displacement250.0 ccm (15.26 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Power17.0 HP (12.4 kW)) @ 9000 RPM
Bore x Stroke73.0 x 59.0 mm (2.9 x 2.3 inches)
Fuel SystemCarburettor
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
CoolingAir
Transmission
Gearbox6-speed
Final DriveBelt (final drive)
Performance
Top Speed136.0 km/h (84.5 mph)
Wheels & Brakes
Front Tyre90/90-16
Rear Tyre100/90-18
Front BrakesSingle disc
Rear BrakesExpanding brake (drum brake)
Dimensions & Weight
Weight incl.137.0 kg (302.0 pounds)
Seat Height780 mm (30.7 inches) If adjustable, lowest setting.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
