The Yamaha XT 660 R motorcycle specifications include a 659 cc (40.21 cu in) engine and a listed weight of 165 kg (363.8 lb).
Key specifications
The 2004 model is treated as the standard specification. Only later model years with a different supplied value are shown below.
How the Yamaha XT 660 R compares
This compares the motorcycle with all Yamaha models in this specifications database. The blue marker is this model and the grey line is the Yamaha database average.
About 20% higher than the Yamaha database average. Around the 67th percentile across Yamaha models.
About 8% taller than the Yamaha database average. Around the 84th percentile across Yamaha models.
Yamaha database percentile rankings
Percentiles show where this motorcycle sits across the Yamaha specifications database. They are descriptive database rankings, not performance ratings.
659 cc — larger displacement than about 67% of Yamaha models.
855 mm — taller than about 84% of Yamaha models.
Dimensions compared with Yamaha average
Each measurement is compared with the average value across Yamaha models where that dimension is available.
2,240
2,082
8% above average.
850
823
3% above average.
1,235
1,172
5% above average.
1,500
1,416
6% above average.
855
793
8% above average.
200
181
11% above average.
Mechanical overview
Additional useful specifications
| Front tire size | 90/90-M21 |
|---|---|
| Rear tire size | 130/80-M17 |
| Bore/stroke ratio | 1.19:1 (Oversquare) |
Engine specifications
| Engine type | Single cylinder, four-stroke |
|---|---|
| Displacement | 659 cc (40.21 cu in) |
| Torque | 58.4 Nm (6.0 kgf-m or 43.1 ft.lbs) @ 5,250 rpm |
| Bore × stroke | 100.0 x 84 mm (3.9 x 3.3 inches) |
| Compression ratio | 10.0:1 |
| Valves per cylinder | 4 |
| Cooling system | Liquid |
| Fuel system | Injection |
Transmission and drivetrain
| Final drive | Chain (final drive) |
|---|
Chassis and suspension
| Front suspension | Telescopic fork, diameter 43 mm |
|---|---|
| Rear suspension | Monocross with linkage |
| Front wheel travel | 225 mm (8.9 inches) |
| Rear wheel travel | 200 mm (7.9 inches) |
Brakes, wheels and tires
| Front brakes | Single disc |
|---|---|
| Rear brakes | Single disc |
| Front tire | 90/90-M21 |
| Rear tire | 130/80-M17 |
Dimensions and weight
| Dry weight | 165 kg (363.8 lb) |
|---|---|
| Seat height | 855 mm (33.7 inches) |
| Overall length | 2,240 mm (88.2 inches) |
| Overall width | 850 mm (33.5 inches) |
| Overall height | 1,235 mm (48.6 inches) |
| Wheelbase | 1,500 mm (59.1 inches) |
| Ground clearance | 200 mm (7.9 inches) |
Performance
| Power/weight ratio | 0.2909 hp/kg |
|---|
Other specifications
| Color options | Racing blue, Yamaha black |
|---|
Disclaimer: Specifications may vary by market, trim, production date and optional equipment, and scraped or historical data can contain errors. Comparison and percentile values are calculated from Yamaha models in this specifications database. Always double-check important specifications against the motorcycle owner’s/service manual and official Yamaha information before relying on them. Visit the official Yamaha website.