Across the 2006 and 2007 model years, the Yamaha XT 660 X motorcycle has supplied dry weights ranging from 363.8 lb (165 kg) to 390.2 lb (177 kg).
Yamaha XT 660 X weight overview
The bike falls into a normal middleweight range. At road speed the mass is usually less obvious; parking, slopes and walking-speed maneuvers are where you notice it most. The comparison uses dry weight because a usable wet/running figure was not supplied, so the actual ready-to-ride motorcycle will be heavier.
Middleweight Motorcycle
Dry weight range
Bike + rider total weight
These totals use the model’s representative dry weight. They exclude riding gear, luggage and a passenger.
Yamaha XT 660 X weight & related specs
| Model years covered | 2006, 2007 |
|---|---|
| Dry weight | 363.8 lb (165 kg) to 390.2 lb (177 kg) |
| Engine displacement | 660 cc |
| Power | 47.3 hp |
| Torque | 43.1 lb-ft (58.4 Nm) to 44.3 lb-ft (60 Nm) |
| Fuel capacity | 3.96 US gal (15 L) |
| Full-tank fuel weight (estimated) | 24.6 lb (11.2 kg) |
Weight changes by model year
The 2006 model is used as the baseline where data is available. Only later supplied values that differ are shown below. A year pill does not mean every individual weight field was supplied for that year.
Useful weight calculations
| Horsepower per 100 lb | 12.12 hp / 100 lb |
|---|---|
| Pounds per horsepower | 8.25 lb / hp |
| Torque per 100 lb | 11.34 lb-ft / 100 lb to 11.84 lb-ft / 100 lb |
| Displacement per pound | 1.69 cc / lb to 1.81 cc / lb |
| Weight per 100 cc | 55.1 lb / 100 cc to 59.1 lb / 100 cc |
| Fuel weight as % of bike weight | 6.3% to 6.8% |
| Weight with full tank | 388.4 lb (176.2 kg) to 414.9 lb (188.2 kg) |
What the weight numbers tell you
Yamaha XT 660 X weight FAQ
What is the Yamaha XT 660 X dry weight?
The available dry weight is 363.8 lb (165 kg) to 390.2 lb (177 kg). Actual ready-to-ride weight will be higher after fuel and operating fluids are added.
Which Yamaha XT 660 X years have different weight specs?
The supplied data shows different weight figures across the 2006-2007 model years. Use the year-specific changes section above for the exact value attached to each changed year.
How much does a full tank add to the Yamaha XT 660 X?
Based on the supplied 3.96 US gal (15 L) tank capacity, the gasoline itself weighs about 24.6 lb (11.2 kg) when full. This helps explain part of the difference between dry and ready-to-ride mass.
What is the combined Yamaha XT 660 X and rider weight?
Using the model’s representative dry weight and a 180 lb rider, the combined bike-and-rider mass is about 557 lb (252.6 kg) before riding gear, luggage or a passenger.
What is the Yamaha XT 660 X power-to-weight ratio?
Available model-year data produces 12.12 hp per 100 lb. It shows engine output relative to motorcycle mass rather than just quoting peak horsepower.
Is the listed Yamaha XT 660 X weight ready to ride?
The published usable figure is dry, not curb weight. A simple dry-plus-full-fuel estimate is 388.4 lb (176.2 kg) to 414.9 lb (188.2 kg), but that still is not a substitute for an official wet/curb specification.
What is the Yamaha XT 660 X full-tank weight estimate?
Using the listed dry weight plus the calculated fuel mass, the estimated weight with a full tank is 388.4 lb (176.2 kg) to 414.9 lb (188.2 kg). That still may not equal official curb weight because dry-weight definitions can exclude other fluids or equipment.
What is the Yamaha XT 660 X torque per 100 lb of bike weight?
Where compatible torque and weight figures are available, the model works out to 11.34 lb-ft per 100 lb to 11.84 lb-ft per 100 lb. This gives more context than torque alone because it relates engine twist to the mass it has to move.
How many cc does the Yamaha XT 660 X have per pound?
The available figures work out to 1.69 cc per lb to 1.81 cc per lb. This is not a performance rating, but it is a useful way to compare engine size against total motorcycle mass.
Motorcycle specifications can vary by model year, market, equipment and the exact dry/curb-weight definition. Calculated fuel-weight and ratio figures on this page are estimates derived from the supplied specifications. Confirm critical figures in the owner’s manual or on the official Yamaha Motorsports website.