Segment: Enduro/Offroad
Production years: 1988, 1989, 1990, 1991, 1992, 1993
The Yamaha TDR 250 was a middleweight dual-sports motorcycle made by Yamaha from 1988 until 1993. It was a street-legal machine powered by a 249cc naturally-aspirated parallel twin-cylinder engine borrowed from the first-generation TRZ 250 model.
The bike's engine had a Yamaha Power Valve System, CDI ignition, and digital spark advanced. In addition, most parts, such as the engine, transmission, and electrical components, were interchangeable with the TZR and R1-Z models.
The TDR 250 was intended to deliver agile handling and fast acceleration on paved roads but also off-road trails. In addition, a 240cc version of the bike was manufactured exclusively for the French market.
In 1988, the Japanese motorcycle manufacturer launched the Yamaha TDR 250, a motorcycle fitted with standard features, such as a rectangular headlight integrated into a front fairing, a small windscreen, a one-piece dual seat with passenger grab rails, an under-seat-mounted exhaust system, and lightweight wire-spoke wheels.
The bike's suspension system comprised an air-assisted seven-way preload-adjustable telescopic fork on the front and a preload-adjustable shock absorber on the rear, providing excellent handling.
The braking power was achieved by a 320 mm disc with a dual-piston caliper on the front wheel and a 210 mm disc with a single-piston caliper on the rear wheel.
As for the power figures, the 1988 Yamaha TDR 250 had installed a 249cc four-stroke parallel-twin liquid-cooled engine underneath its fuel tank, delivering 46 hp at 9,500 rpm and 36 Nm (27 lb-ft) torque at 8,500 rpm.
engine specs | Type: | Liquid Cooled, Two Stroke, Parallel Twin Cylinder, Read Valve | Displacement: | 249 cm3 | Bore X Stroke: | 2.2x2.0 in OR 56 mm | Compression Ratio: | 5.9:1 | Horsepower: | 46/9500 KW(hp)/RPM | Torque: | 26.7/8500 lb-ft/RPM OR 36/8500 Nm/RPM | Fuel System: | 2x28mm Mikuni Carburetors |
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transmission specs | Gearbox: | 6-Speed | Clutch: | Wet multi-discs | Primary Drive: | - | Final Drive: | Chain |
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chassis specs | Frame: | - | Front Suspension: | Air Assisted Telescopic Forks | Rear Suspension: | Single Shock | Front Brake: | Single 320mm Disc 2 Piston Calipers | Rear Brake: | Single 210mm Disc Single Piston Caliper |
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dimension specs | Overall Length: | 84.4 in OR 2144 mm | Overall Width: | 30.9 in OR 785 mm | Seat Height: | 32.3 in OR 820 mm | Wheelbase: | 54.5 in OR 1384 mm | Ground Clearance: | 9.1 in OR 231 mm | Weight: | 337 lbs OR 153 kg | Fuel Capacity: | 3.7 gallons OR 14.0 L |
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tyres specs | Front: | 110/90-18 | Rear: | 120/80-17 |
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power system specs | Power pack: | - | Nominal Capacity: | - | Maximum Capacity: | - | Charger type: | - | Charging time (normal): | - | Charging time (quick): | - | Range: | - |
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