Yamaha XT125: history, specs, pictures

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Yamaha XT125
Manufacturer Yamaha
Also called XT 125 X, XT125X, XT125R, XT 125 R, XT 125
Production 2005 - 2009
Class Trail
Engine single cylinder, four-stroke
Bore / Stroke 54.0mm x 54.0mm
Horse Power 9.52 HP (7.1 KW) @ 10000RPM
Torque 7.45 ft/lbs (10.1 Nm) @ 5500RPM
Fuel system carburettor
Ignition type cdi
Sparkplug NGK D8EA '82-83
Battery YUASA 6N4A-4D '82-83
Transmission Gear box: 5-speed

Final Drive: chain

Clutch: wet, multiple disc
Suspension Front: telescopic forks
Rear: swingarm
Brakes Front: single disc
Rear: single disc
Front Tire 90/90-s21
Rear Tire 120/80-s18
Wheelbase 52.56 inches (1335 mm)
Dimensions L 83.07 inches (2110 mm)
W 31.5 inches (800 mm)
H 44.88 inches (1140 mm)
Seat height 33.86 inches (860 mm)
Weight 233.69 pounds (106.0 Kg) (dry), 120.0 kg (wet)
Fuel capacity 2.38 Gallon (9.00 Liters)
Oil capacity 0.32 Gallon (1.20 Liters)
Manuals Service Manual
Tech Specs · Brochures · Reviews · Ads · Videos

The Yamaha XT125R was a single cylinder, four-stroke Trail motorcycle produced by Yamaha between 2005 and 2009. Max torque was 7.45 ft/lbs (10.1 Nm) @ 5500 RPM. Claimed horsepower was 9.52 HP (7.1 KW) @ 10000 RPM.


The engine was a air cooled single cylinder, four-stroke. A 54.0mm bore x 54.0mm stroke result in a displacement of just 124.0 cubic centimeters. Fuel was supplied via a single overhead cams (sohc).


The bike has a 5-speed transmission. Power was moderated via the wet, multiple disc.


It came with a 90/90-s21 front tire and a 120/80-s18 rear tire. Stopping was achieved via single disc in the front and a single disc in the rear. The front suspension was a telescopic forks while the rear was equipped with a swingarm. The XT125R was fitted with a 2.38 Gallon (9.00 Liters) fuel tank. The bike weighed just 233.69 pounds (106.0 Kg). The wheelbase was 52.56 inches (1335 mm) long.

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