Across 5 covered model years from 2002 to 2007, the Yamaha YZ 125 motorcycle has supplied dry weights ranging from 189.6 lb (86 kg) to 192.9 lb (87.5 kg).
Yamaha YZ 125 weight overview
Its low overall mass should be most noticeable off the throttle: moving it by hand, backing out of a parking space and managing stop-start riding should take less effort than on a heavy road bike. The comparison uses dry weight because a usable wet/running figure was not supplied, so the actual ready-to-ride motorcycle will be heavier.
Very Light Motorcycle
How heavy is the Yamaha YZ 125?
dry weight
Using a model-level dry weight comparison, the Yamaha YZ 125 is lighter than about 56.2% of 8 Yamaha motocross bikes with compatible weight data.
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 YZ 125 weight & related specs
| Model years covered | 2002, 2004, 2005, 2006, 2007 |
|---|---|
| Dry weight | 189.6 lb (86 kg) to 192.9 lb (87.5 kg) |
| Engine displacement | 124 cc |
| Fuel capacity | 2.1 US gal (7.94 L) to 2.11 US gal (8 L) |
| Full-tank fuel weight (estimated) | 13 lb (5.9 kg) to 13.1 lb (6 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
| Displacement per pound | 0.64 cc / lb to 0.65 cc / lb |
|---|---|
| Weight per 100 cc | 152.9 lb / 100 cc to 155.6 lb / 100 cc |
| Fuel weight as % of bike weight | 6.9% to 6.9% |
| Weight with full tank | 202.7 lb (92 kg) to 203.1 lb (92.1 kg) |
What the weight numbers tell you
Yamaha YZ 125 weight FAQ
What is the Yamaha YZ 125 dry weight?
The available dry weight is 189.6 lb (86 kg) to 192.9 lb (87.5 kg). Actual ready-to-ride weight will be higher after fuel and operating fluids are added.
Is the Yamaha YZ 125 lighter or heavier than other Yamaha motocross bikes?
Weight is broadly typical for the category, landing around the 44th percentile in this model-level Yamaha comparison.
Which Yamaha YZ 125 years have different weight specs?
The supplied data shows different weight figures across the 2002, 2004, 2005, 2006, 2007 model years. Use the year-specific changes section above for the exact value attached to each changed year. No usable dry/wet figure was supplied for 2005.
How much does a full tank add to the Yamaha YZ 125?
Based on the supplied 2.1 US gal (7.94 L) to 2.11 US gal (8 L) tank capacity, the gasoline itself weighs about 13 lb (5.9 kg) to 13.1 lb (6 kg) when full. This helps explain part of the difference between dry and ready-to-ride mass.
What is the combined Yamaha YZ 125 and rider weight?
Using the model’s representative dry weight and a 180 lb rider, the combined bike-and-rider mass is about 370.9 lb (168.2 kg) before riding gear, luggage or a passenger.
Is the listed Yamaha YZ 125 weight ready to ride?
The published usable figure is dry, not curb weight. A simple dry-plus-full-fuel estimate is 202.7 lb (92 kg) to 203.1 lb (92.1 kg), but that still is not a substitute for an official wet/curb specification.
What is the estimated Yamaha YZ 125 weight with a full tank of gas?
Filling the listed tank brings the calculated bike weight to roughly 202.7 lb (92 kg) to 203.1 lb (92.1 kg). This estimate is most useful when no official wet/running figure is available.
How much of the Yamaha YZ 125 total weight comes from fuel?
The calculated full-tank fuel mass is about 6.9% to 6.9% of the bike’s listed weight. This helps show why a dry-weight number can understate what you actually manage on the road.
What is the Yamaha YZ 125 engine-size-to-weight ratio?
The available figures work out to 0.64 cc per lb to 0.65 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.