The Yamaha XT 660 X Supermotard motorcycle specifications include a 659 cc (40.21 cu in) engine, power of 47.3 hp (34.5 kW) @ 6,000 rpm, and a listed weight of 173 kg (381.4 lb).
Key specifications
How the Yamaha XT 660 X Supermotard 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 11% lower than the Yamaha database average. Around the 57th percentile across Yamaha models.
About 20% higher than the Yamaha database average. Around the 67th percentile across Yamaha models.
About 10% taller than the Yamaha database average. Around the 89th 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.
47.3 hp — more powerful than about 57% of Yamaha models with power data.
659 cc — larger displacement than about 67% of Yamaha models.
875 mm — taller than about 89% of Yamaha models.
Dimensions compared with Yamaha average
Each measurement is compared with the average value across Yamaha models where that dimension is available.
2,131
2,082
Close to average.
860
823
4% above average.
1,349
1,172
15% above average.
1,485
1,416
5% above average.
875
793
10% above average.
200
181
11% above average.
Mechanical overview
Additional useful specifications
| Front tire size | 120/70-17 |
|---|---|
| Rear tire size | 160/60-17 |
| Front tire width | 120 mm |
| Front tire aspect ratio | 70% |
| Front rim diameter | 17 in |
| Rear tire width | 160 mm |
| Rear tire aspect ratio | 60% |
| Rear rim diameter | 17 in |
| Power-to-weight ratio | 0.273 hp/kg |
| Power-to-weight | 273.4 hp/tonne |
| Specific power | 71.8 hp/L |
| Bore/stroke ratio | 1.19:1 (Oversquare) |
Model information
| Year released | 2004 |
|---|---|
| Category | Super motard |
Engine specifications
| Engine type | Single cylinder, four-stroke |
|---|---|
| Displacement | 659 cc (40.21 cu in) |
| Power | 47.3 hp (34.5 kW) @ 6,000 rpm |
| 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 |
| Cooling system | Liquid |
| Fuel control | Double Overhead Cams/Twin Cam (DOHC) |
Chassis and suspension
| Front suspension | Telescopic fork, diameter 43mm |
|---|---|
| Rear suspension | Monocross with linkage |
| Front wheel travel | 200 mm (7.9 inches) |
| Rear wheel travel | 191 mm (7.5 inches) |
Brakes, wheels and tires
| Front brakes | Single disc |
|---|---|
| Rear brakes | Single disc |
| Front tire | 120/70-17 |
| Rear tire | 160/60-17 |
Dimensions and weight
| Dry weight | 173 kg (381.4 lb) |
|---|---|
| Seat height | 875 mm (34.4 inches) |
| Overall length | 2,131 mm (83.9 inches) |
| Overall width | 860 mm (33.9 inches) |
| Overall height | 1,349 mm (53.1 inches) |
| Wheelbase | 1,485 mm (58.5 inches) |
| Ground clearance | 200 mm (7.9 inches) |
Performance
| Power/weight ratio | 0.2736 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.