These are the known mechanical and performance specifications for your 1970 Yamaha KS 250.
Basic Specs
Engine
Displacement250.00 ccm (15.26 cubic inches)
Type
DetailsTwo cylinder boxer, four-stroke
Max RPM
Compression
Bore/Stroke
Valves/Cylinder
FuelingCarburettor
Ignition
Exhaustdouble stainless pipes
Lubrication
CoolingOil & air
Chassis
Frame Type
Rake
Trail
Front Suspension
Front Travel
Rear Suspension
Rear Travel
Seat
Seat Height
Alt. Seat Height
Total Height
Total Length
Total Width
Ground Clearance
Wheelbase
Dry Weight
Wet Weight
Wheels & Brakes
Front Tire/Tyre
Rear Tire/Tyre
Front Brakes
Front Brake Diameter
Rear Brakes
Rear Brake Diameter
Wheels
Comments
the only place on the bike that says what it is..... is on the exhaust and it claims to be a KS 250¿ and i dont know the year!