2003 Yamaha TT-R 125 Specifications

by Madison Rayne

The 2003 Yamaha TT-R 125 is a Japanese-manufactured motorcycle designed for off-road riding. This bike has smaller wheels, tires and seats designed to fit shorter riders. The TT-R 125 bike offers a long, YZ style seat that sits low for better maneuverability and large footpegs that are cleated and foldable for better footing. The Yamaha TT-R 125 has a narrow and sleek fuel tank, and Yamaha's familiar blue and white colors and graphics.


The 2003 Yamaha TT-R 125 had an overall length of 73.4 inches, width of 30.1 inches, height of 41.5 inches and seat height of 30.5 inches. The wheelbase was 49.2 inches. The dry weight of the Yamaha TT-R 125 was 183.4 lbs. The fuel capacity was 1.7 gallons.

Engine and Transmission

The Yamaha TT-R 125 featured an air-cooled 124 cc single-cylinder four-stroke engine with two valves per cylinder. The engine had a bore and stroke of 2.1 inches by 2.1 inches and an engine compression ratio of 10-to-1. The fuel control was a single overhead cam with a 20 mm Mikuni carburetor. The TT-R 125 was equipped with a five-speed transmission with chain drive.

Brakes, Suspensions and Tires

The Yamaha TT-R 125 had a 70/100-17 front tire and a 90/100-14 rear tire. The front suspension of this off-roader was a telescopic fork with 7.1 inches of travel; the rear had a single shock with 6.3 inches of travel. This off-roader also had 4.3-inch drum brakes on the front and rear.

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