Yamaha SR250 (1st gen.)

Manufacturer	Yamaha Motor Company
Also called	Exciter I (US)
Parent company	Yamaha Corporation
Production	1980–1984
Class	Standard
Engine	249 cc (15.2 cu in) SOHC 2-valves per cyl. single
Bore / stroke	75.0 mm × 56.5 mm (2.95 in × 2.22 in)
Compression ratio	9.2:1
Top speed	130 km/h (80 mph)[1]
Power	21.0 bhp (15.7 kW) @ 8,000 rpm (claimed)[1]
Torque	18.8 lb⋅ft (25.5 N⋅m) @ 6,500 rpm (claimed)[1]
Ignition type	Transistorized electronic ignition
Transmission	Multi-plate wet-clutch, 5-speed sequential manual, chain-drive
Frame type	Steel. Stressed member engine
Suspension	Front: telescopic fork, 140 mm (5.5 in) travel. Rear:Swingarm, 84 mm (3.3 in) travel
Brakes	Front: 159 mm (6.25 in) drum Rear: 130 mm (5.2 in) drum
Tires	Yokohama. Front: 3.00-18 Rear: 120/80-16
Rake, trail	27.5°, 120 mm (4.8 in)
Wheelbase	1,340 mm (52.75 in)
Dimensions	W: 710 mm (28.0 in)
Seat height	740 mm (29.0 in)
Weight	130 kg (287 lb) (½ tank)[1] (wet)
Fuel capacity	10 L; 2.2 imp gal (2.7 US gal)[1]
Fuel consumption	76 mpg‑US (3.1 L/100 km; 91 mpg‑imp)[1]

The Yamaha SR250 is a single cylinder motorcycle made by Yamaha Motor Company initially from 1980 to 1984 and then 2001 to 2004 for a second generation. It shares styling with the larger Yamaha SR500. The first generation had a 249 cc (15.2 cu in) displacement and the second generation was 239 cc (14.6 cu in).

History

The SR250 was produced from 1980 to 1982 in the United States, as well as from 1982 to 2002 in Spain, in two versions. While it has stylistic similarities with its older brothers the SR500 and SR400, the SR250 is very much a commuter bike. In 1980 Cycle World's test of the SR250, called the Exciter I in the US with added high, cruiser style handlebars, found a standing 1⁄4-mile (0.40 km) time of 16.36 seconds at 122.89 km/h (76.36 mph), acceleration from 0 to 97 km/h (0 to 60 mph) of 11.5 seconds, and a top speed of 130 km/h (80 mph).^[1] Braking distance from 60 to 0 mph (97 to 0 km/h) was 38 m (125 ft), and tested fuel consumption was 76 mpg_‑US (3.1 L/100 km; 91 mpg_‑imp), giving a range of 269 km (167 mi).^[1]

2001 model

Yamaha SR250 (2nd gen.)

Manufacturer	Yamaha
Production	2001–
Engine	239 cc (14.6 cu in) single, air cooled, four-stroke
Transmission	5-speed sequential manual transmission
Related	Yamaha SR500

In 2001, Yamaha released their most recent SR250 due to popular demand for reliable commuters. This model is modeled after the SR500. Despite sharing the SR designation, these bikes are very different. The engines are different in the most fundamental sense and the frames are also very different - no seat or tank components are interchangeable without frame modification.