Across the 2015, 2016 and 2017 model years, the Yamaha Grizzly 450 IRS motorcycle has a listed wet/running weight of 619.9 lb (281.2 kg).
Yamaha Grizzly 450 IRS weight overview
The scale number is high enough that parking and low-speed balance deserve real consideration. Once the bike leans too far, recovering it takes much more effort than on a light machine.
Very Heavy Motorcycle
How heavy is the Yamaha Grizzly 450 IRS?
wet weight
Using a model-level wet weight comparison, the Yamaha Grizzly 450 IRS is lighter than about 58.1% of 62 Yamaha ATVs with compatible weight data.
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 Grizzly 450 IRS weight & related specs
| Model years covered | 2015, 2016, 2017 |
|---|---|
| Wet / running weight | 619.9 lb (281.2 kg) |
| Engine displacement | 421 cc |
| Fuel capacity | 4 US gal (15.14 L) |
| Full-tank fuel weight (estimated) | 24.9 lb (11.3 kg) |
Weight changes by model year
Useful weight calculations
| Displacement per pound | 0.68 cc / lb |
|---|---|
| Weight per 100 cc | 147.3 lb / 100 cc |
| Fuel weight as % of bike weight | 4% |
What the weight numbers tell you
Yamaha Grizzly 450 IRS weight FAQ
What is the Yamaha Grizzly 450 IRS wet weight?
The supplied wet/running weight is 619.9 lb (281.2 kg) across the model years covered here. That figure is the most useful available number for real-world handling because operating fluids and fuel are included.
Is the Yamaha Grizzly 450 IRS lighter or heavier than other Yamaha ATVs?
Weight is broadly typical for the category, landing around the 42nd percentile in this model-level Yamaha comparison.
Which Yamaha Grizzly 450 IRS 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 Grizzly 450 IRS?
Based on the supplied 4 US gal (15.14 L) tank capacity, the gasoline itself weighs about 24.9 lb (11.3 kg) when full. On models with a wet/running weight, that fuel mass is already included in the listed ready-to-ride figure.
What is the combined Yamaha Grizzly 450 IRS and rider weight?
Using the model’s representative wet/running weight and a 180 lb rider, the combined bike-and-rider mass is about 799.9 lb (362.8 kg) before riding gear, luggage or a passenger.
What is the Yamaha Grizzly 450 IRS displacement per pound?
The available figures work out to 0.68 cc per lb. This is not a performance rating, but it is a useful way to compare engine size against total motorcycle mass.
What is the Yamaha Grizzly 450 IRS weight difference versus the category median?
Compared with the median Yamaha ATV weight of 642.5 lb (291.4 kg), the model is roughly 22.6 lb (10.2 kg) lighter.
Where will I notice the Yamaha Grizzly 450 IRS weight most?
The main challenge is low-speed and stationary handling. Once moving the chassis may disguise the mass, but backing up or holding it on a slope still means managing the full 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.