Across the 2002, 2012 and 2014 model years, the Yamaha SR 400 motorcycle has supplied wet/running weights ranging from 383.6 lb (174 kg) and dry weights ranging from 335.1 lb (152 kg), depending on model year.
Yamaha SR 400 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.
Middleweight Motorcycle
How heavy is the Yamaha SR 400?
wet weight
Using a model-level wet weight comparison, the Yamaha SR 400 is lighter than about 57.1% of 28 Yamaha allround models 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 SR 400 weight & related specs
| Model years covered | 2002, 2012, 2014 |
|---|---|
| Wet / running weight | 383.6 lb (174 kg) |
| Dry weight | 335.1 lb (152 kg) |
| Engine displacement | 399 cc |
| Power | 27 hp |
| Torque | 20.2 lb-ft (27.4 Nm) to 21.4 lb-ft (29 Nm) |
| Fuel capacity | 3.17 US gal (12 L) |
| Full-tank fuel weight (estimated) | 19.7 lb (8.9 kg) |
Weight changes by model year
The 2002 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 | 8.06 hp / 100 lb |
|---|---|
| Pounds per horsepower | 12.41 lb / hp |
| Torque per 100 lb | 5.27 lb-ft / 100 lb to 6.38 lb-ft / 100 lb |
| Displacement per pound | 1.04 cc / lb to 1.19 cc / lb |
| Weight per 100 cc | 84 lb / 100 cc to 96.1 lb / 100 cc |
| Fuel weight as % of bike weight | 5.1% to 5.9% |
| Weight with full tank | 354.8 lb (160.9 kg) |
What the weight numbers tell you
Yamaha SR 400 weight FAQ
What is the Yamaha SR 400 dry and wet weight?
Across the covered 2002, 2012, 2014 years, listed wet/running weight is 383.6 lb (174 kg) and listed dry weight is 335.1 lb (152 kg). Check the year-change section because the exact figure can vary by model year.
Is the Yamaha SR 400 lighter or heavier than other Yamaha allround models?
Weight is broadly typical for the category, landing around the 43rd percentile in this model-level Yamaha comparison.
Which Yamaha SR 400 years have different weight specs?
No clear weight change appears in the usable model-year data. Other specifications may still differ by year.
How much does a full tank add to the Yamaha SR 400?
Based on the supplied 3.17 US gal (12 L) tank capacity, the gasoline itself weighs about 19.7 lb (8.9 kg) when full. This helps explain part of the difference between dry and ready-to-ride mass.
What is the combined Yamaha SR 400 and rider weight?
Using the model’s representative wet/running weight and a 180 lb rider, the combined bike-and-rider mass is about 563.6 lb (255.6 kg) before riding gear, luggage or a passenger.
What is the Yamaha SR 400 power-to-weight ratio?
Available model-year data produces 8.06 hp per 100 lb. It shows engine output relative to motorcycle mass rather than just quoting peak horsepower. That places it around the 39th percentile within the compatible Yamaha allround power-to-weight comparison.
What is the Yamaha SR 400 full-tank weight estimate?
The page calculates about 354.8 lb (160.9 kg) with a full tank by adding the listed fuel mass to the dry figure. Treat this as a practical estimate, not an official Yamaha curb-weight number.
What is the Yamaha SR 400 torque-to-weight ratio?
Where compatible torque and weight figures are available, the model works out to 5.27 lb-ft per 100 lb to 6.38 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 large is the Yamaha SR 400 engine for its weight?
The available figures work out to 1.04 cc per lb to 1.19 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.