Yamaha XT660R
| 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.