Across 7 covered model years from 2008 to 2015, the Yamaha XT660X motorcycle has supplied wet/running weights ranging from 399 lb (181 kg) to 416.7 lb (189 kg) and dry weights ranging from 390.2 lb (177 kg), depending on model year.
Yamaha XT660X weight overview
This is middleweight territory: substantial enough to feel planted, but still well short of heavyweight touring and large-cruiser mass.
Middleweight Motorcycle
How heavy is the Yamaha XT660X?
wet weight
Using a model-level wet weight comparison, the Yamaha XT660X is lighter than about 64.3% of 21 Yamaha supermoto bikes with compatible weight data.
Dry vs ready-to-ride weight
Bike + rider total weight
These totals use the model’s representative wet weight. They exclude riding gear, luggage and a passenger.
Yamaha XT660X weight & related specs
| Model years covered | 2008, 2009, 2011, 2012, 2013, 2014, 2015 |
|---|---|
| Wet / running weight | 399 lb (181 kg) to 416.7 lb (189 kg) |
| Dry weight | 390.2 lb (177 kg) |
| Engine displacement | 660 cc |
| Power | 47.3 hp |
| Torque | 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 2008 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 | 11.53 hp / 100 lb |
|---|---|
| Pounds per horsepower | 8.67 lb / hp |
| Torque per 100 lb | 10.62 lb-ft / 100 lb to 11.34 lb-ft / 100 lb |
| Displacement per pound | 1.58 cc / lb to 1.69 cc / lb |
| Weight per 100 cc | 59.1 lb / 100 cc to 63.1 lb / 100 cc |
| Fuel weight as % of bike weight | 5.9% to 6.3% |
| Weight with full tank | 414.9 lb (188.2 kg) |
What the weight numbers tell you
Yamaha XT660X weight FAQ
How much does the Yamaha XT660X weigh?
For the model years covered here, wet/running weight is 399 lb (181 kg) to 416.7 lb (189 kg), while dry weight is 390.2 lb (177 kg). Do not treat dry and wet figures as interchangeable.
How does the Yamaha XT660X weight compare with similar Yamahas?
It is not an extreme outlier for the category. The model ranks around the 36th percentile for weight among 21 compatible Yamaha supermoto bikes.
Are all Yamaha XT660X model years the same weight?
There are year-to-year differences in the supplied data. The earliest covered year is used as the baseline, with later changed values shown separately above.
What does a full tank of gas weigh on the Yamaha XT660X?
A full tank works out to about 24.6 lb (11.2 kg) from the listed 3.96 US gal (15 L) capacity. Actual fuel density varies slightly, so treat it as a practical estimate.
What does the Yamaha XT660X weigh with a 180 lb rider?
The approximate combined total is 590.1 lb (267.6 kg) with a 180 lb rider, based on the representative wet/running weight used on this page.
Is the Yamaha XT660X strong for its weight?
The calculated range is 11.53 hp per 100 lb. This ratio is usually more informative for acceleration comparisons than horsepower alone. That places it around the 46th percentile within the compatible Yamaha super motard power-to-weight comparison.
What does the Yamaha XT660X weigh with a full tank?
Using the listed dry weight plus the calculated fuel mass, the estimated weight with a full tank is 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 XT660X torque per 100 lb of bike weight?
Available data gives 10.62 lb-ft per 100 lb to 11.34 lb-ft per 100 lb. That ratio helps explain how strong the engine is relative to the bike’s mass, especially at lower speeds.
How many cc does the Yamaha XT660X have per pound?
The model has about 1.58 cc per lb to 1.69 cc per lb in the available data. This simply shows how much engine displacement there is for each pound of motorcycle weight.
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.