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| Manufacturer | Yamaha Motor Company |
|---|---|
| Predecessor | XT600 |
| Class | Dual-sport |
| Engine | 660 cc liquid-cooled, 4-stroke, SOHC, single-cylinder, 4-valve, fuel injected |
| Bore / stroke | 100.0 mm × 84.0 mm (3.94 in × 3.31 in) |
| Compression ratio | 10.0:1 |
| Power | 35 kW (47 hp) @ 6,000 rpm |
| Torque | 58 N⋅m (43 lbf⋅ft) @ 5,500 rpm |
| Transmission | 5-speed chain drive |
| Suspension | Front: Telescopic forks Rear: Monoshock |
| Brakes | Front: Single disc Rear: Single disc |
| Tires | Front: 90/90R21 Rear: 130/80R17 Spoked tubed wheels |
| Rake, trail | 28° / 113 mm (4.4 in) |
| Wheelbase | 1,500 mm (59 in) |
| Dimensions | L: 2,260 mm (89 in) W: 895 mm (35.2 in) H: 1,500 mm (59 in) |
| Seat height | 895 mm (35.2 in) |
| Weight | 181 kg (399 lb) (wet) |
| Fuel capacity | 15 L (3.3 imp gal; 4.0 US gal) |
| Oil capacity | 2.9 L (3.1 US qt) |
| Related | XT660Z Ténéré |
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 4 strokes, 'T' for TRAIL), a line of motorcycles inspired by those used on the Paris Dakar rally. The first XT was released in 1976. The XT660R is the standard Enduro model ('R' stands for racing).
A five-valve version of the 660 cc engine was used in a number of MZ (MuZ) motorcycles, including the MZ Skorpion, Baghira and Mastiff.
After 2015 this bike was not sold in some European countries and US.
