Yamaha SR125

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Yamaha SR125
Also called SR 125
Production 1989 - 2001
Class Naked
single cylinder, four-stroke
Bore / Stroke 57.0mm x 48.8mm
Compression ratio 10:1
Top Speed 63 mph (102 km/h)
Horsepower 11.8 HP (8.8 KW) @ 8500RPM
Torque 7.23 ft/lbs (9.8 Nm) @ 8000RPM
Transmission Gear box: 5-speed

Final Drive: chain

Clutch: Wet multi-plate
Suspension Front: Telescopic Forks
Rear: Dual Shocks
Brakes Front: single disc
Rear: expanding brake
Front Tire 3.00-17
Rear Tire 3.00-16
Wheelbase 50.39 inches (1280 mm)
Seat Height 28.74 inches (730 mm)
Weight 229.28 pounds (104.0 Kg) (dry), 112.0 kg (wet)
Oil Filter K&N KN-143
Recommended Oil Yamalube 10w-40
Fuel Capacity 2.64 Gallon (10.00 Liters)
Manuals Service Manual

The Yamaha SR125 was a single cylinder, four-stroke Naked motorcycle produced by Yamaha between 1989 and 2001. It could reach a top speed of 63 mph (102 km/h). Max torque was 7.23 ft/lbs (9.8 Nm) @ 8000 RPM. Claimed horsepower was 11.8 HP (8.8 KW) @ 8500 RPM.


The engine was a oil & air cooled single cylinder, four-stroke. A 57.0mm bore x 48.8mm stroke result in a displacement of just 125.0 cubic centimeters. Fuel was supplied via a standing valves.


The bike has a 5-speed transmission. Power was moderated via the Wet multi-plate.


It came with a 3.00-17 front tire and a 3.00-16 rear tire. Stopping was achieved via single disc in the front and a expanding brake in the rear. The front suspension was a Telescopic Forks while the rear was equipped with a Dual Shocks. The SR125 was fitted with a 2.64 Gallon (10.00 Liters) fuel tank. The bike weighed just 229.28 pounds (104.0 Kg). The wheelbase was 50.39 inches (1280 mm) long.

1989 - 2003 Yamaha SR 125[edit]

1989 - 2003 Yamaha SR 125 1989 - 2003 Yamaha SR 125 1989 - 2003 Yamaha SR 125

Introduced at the end of the 1980, the Yamaha SR 125 had the same technical specs as the 125 XT, but with 12 HP at 8500 rpm instead of 13 HP. The Yamaha SR125 is one of the oldest 125 cruiser type motorcycles on the roads today. It first appeared in the UK way back in 1982, was withdrawn in 1986, then returned in 1991.

In Media[edit]