The Yamaha XT660R motorcycle specifications include a 660 cc (40.27 cu in) engine, a 5-speed gearbox, and a listed weight of 172 kg (379.2 lb).
Key specifications
The 2008 model is treated as the standard specification. Only later model years with a different supplied value are shown below.
How the Yamaha XT660R 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 68th percentile across Yamaha models.
About 9% taller than the Yamaha database average. Around the 87th percentile across Yamaha models.
About 15% larger than the Yamaha database average. Around the 61st 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.
660 cc — larger displacement than about 68% of Yamaha models.
865 mm — taller than about 87% of Yamaha models.
15 L — larger than about 61% of Yamaha fuel tanks in this database.
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.
845
823
Close to average.
1,230
1,172
5% above average.
1,505
1,416
6% above average.
865
793
9% above average.
210
181
16% 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 | 660 cc (40.27 cu in) |
| Torque | 60.0 Nm (6.1 kgf-m or 44.3 ft.lbs) @ 6,100 rpm |
| Bore × stroke | 100.0 x 84 mm (3.9 x 3.3 inches) |
| Compression ratio | 10.0:1 |
| Cooling system | Liquid |
| Fuel system | Injection |
| Fuel control | Single Overhead Cams (SOHC) |
| Ignition | TCI |
| Starter | Electric |
| Lubrication | Dry sump |
Transmission and drivetrain
| Gearbox | 5-speed |
|---|---|
| Final drive | Chain (final drive) |
| Clutch | Wet, multiple-disc coil spring |
Chassis and suspension
| Frame | Steel tube, diamond shaped |
|---|---|
| Front suspension | Telescopic forks |
| Rear suspension | Swingarm (monocross) |
| Front wheel travel | 130 mm (5.1 inches) |
| Rear wheel travel | 120 mm (4.7 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 | 172 kg (379.2 lb) |
|---|---|
| Seat height | 865 mm (34.1 inches) |
| Overall length | 2,240 mm (88.2 inches) |
| Overall width | 845 mm (33.3 inches) |
| Overall height | 1,230 mm (48.4 inches) |
| Wheelbase | 1,505 mm (59.3 inches) |
| Ground clearance | 210 mm (8.3 inches) |
Fuel and emissions
| Fuel capacity | 15.00 L (3.96 US gal) |
|---|
Performance
| Power/weight ratio | 0.2752 hp/kg |
|---|
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.