The Yamaha XT660 is dual-purpose on/off road motorcycles released by Yamaha Motors as a replacement for the XT600.It is a development of the original XT series ('X' stands for CROSS, 'T' for TRAIL), a line of motorcycles inspired by those used on the Paris Dakar Rally(PDR).
The first XT was released in 1976. Engine
Engine Type- Liquid-cooled, 4-stroke, SOHC 4-valve, single
Displacement- 660 cc
Bore x Stroke- 100.0 x 84.0 mm
Compression Ratio- 10.0 : 1
Lubrication System- Dry sump
Fuel Management- Electronic fuel injection
Ignition- TCI
Starter System- Electric
Fuel Tank Capacity- 15 L
Final Transmission- Chain drive
Transmission- 5-speed
Dimensions
Length- 2240 mm
Width- 845 mm
Height- 1230 mm
Seat Height- 865 mm
Wheelbase- 1505 mm
Ground Clearance- 210 mm
Wet Weight- 181 kg with 15 litres of fuel