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Yamaha XS 250

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Make Model

Yamaha XS 250

Year

1977 - 81

Engine

Four stroke, 180° parallel twin, SOHC, 2 valves per cylinder

Capacity

248 cc / 15.2 cu-in
Bore x Stroke 55 х 52.4 mm
Cooling System Air cooled
Compression Ratio 9.6:1
Lubrication Wet sump

Induction

2x 32mm Mikuni carburators

Ignition 

Coil and cb
Starting Kick

Max Power

27 hp / 20.1 kW @ 9500 rpm

Max Torque

2.2 kgf-m / 15.9 lb-ft @ 8500 rpm
Clutch Wet multiplate

Transmission 

6 Speed 
Final Drive Chain
Frame Duplex cradle

Front Suspension

Telescopic forks

Rear Suspension

Dual shocks, swing arm, 5-position preload adjustable

Front Brakes

Single 267mm disc

Rear Brakes

178mm Drum

Front Tyre

3.00-18

Rear Tyre

3.50-18
Wheelbase 1359 mm / 53.5 in
Seat Height 810 mm / 31.8 in
Dry Weight 165.5 kg / 365 lbs

Wet Weight

174 kg / 392.4 lbs

Fuel Capacity 

14 Litres / 3.7 US gal

Road Test

Yamaha XS250. Kawasaki Z250. Honda CB250N. Which Bike 1979

In 1977 Yamaha extended their stake in the 250 market. With the RD two-strokes they were undisputed leaders in the sporting sector; now they went out to attract commuters with a four-stroke.
Introduced outside Japan in the decidedly un-commuter-like setting of Marrakesh, the XS250 had little of the style of the RD but a certain flamboyance, mainly in the welter of go-faster stripes on tank and side panels.

 

A six-speeder, the XS was capable of about 82mph in both top and fifth gears and handled well. It suffered, and does so still, by being easily confused with the
Kawasaki 250; neither has ever managed to challenge the four-stroke Honda's place at the head of the 250 league.