The Yamaha XTZ 660 T n r motorcycle specifications include a 659 cc (40.21 cu in) engine, power of 48 hp (35.0 kW) @ 6,250 rpm, a 5-speed gearbox, and a listed weight of 202 kg (445.3 lb).
Key specifications
The 1991 model is treated as the standard specification. Only later model years with a different supplied value are shown below.
How the Yamaha XTZ 660 T n 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 10% 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 8% heavier than the Yamaha database average. Around the 60th percentile across Yamaha models.
About 53% larger than the Yamaha database average. Around the 91st 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.
48 hp — more powerful than about 57% of Yamaha models with power data.
659 cc — larger displacement than about 67% of Yamaha models.
202 kg — heavier than about 60% of Yamaha models, or lighter than about 40%.
20 L — larger than about 91% of Yamaha fuel tanks in this database.
Mechanical overview
Additional useful specifications
| Front tire size | 90/90-21 |
|---|---|
| Rear tire size | 120/90-17 |
| Front tire width | 90 mm |
| Front tire aspect ratio | 90% |
| Front rim diameter | 21 in |
| Rear tire width | 120 mm |
| Rear tire aspect ratio | 90% |
| Rear rim diameter | 17 in |
| Power-to-weight ratio | 0.238 hp/kg |
| Power-to-weight | 237.6 hp/tonne |
| Specific power | 72.8 hp/L |
| Bore/stroke ratio | 1.19:1 (Oversquare) |
Engine specifications
| Engine type | Single cylinder, four-stroke |
|---|---|
| Displacement | 659 cc (40.21 cu in) |
| Power | 48 hp (35.0 kW) @ 6,250 rpm |
| Bore × stroke | 100.0 x 84 mm (3.9 x 3.3 inches) |
| Compression ratio | 9.2:1 |
| Valves per cylinder | 5 |
| Cooling system | Liquid |
| Fuel control | Overhead Cams (OHC) |
Transmission and drivetrain
| Gearbox | 5-speed |
|---|---|
| Final drive | Chain (final drive) |
Brakes, wheels and tires
| Front brakes | Single disc |
|---|---|
| Rear brakes | Single disc |
| Front tire | 90/90-21 |
| Rear tire | 120/90-17 |
Dimensions and weight
| Wet weight | 202 kg (445.3 lb) |
|---|
Fuel and emissions
| Fuel capacity | 20.00 L (5.28 US gal) |
|---|
Performance
| Top speed | 158.0 km/h (98.2 mph) |
|---|
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.