1979 Yamaha xs250

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.

Yamaha XS 250