Motocross Bikes
2011Yamaha YZ450F
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The 2011 Yamaha YZ450F is a competitive four-stroke motocross bike engineered for amateur and professional racers seeking reliable power delivery. Its 449cc liquid-cooled engine features titanium valves and fuel injection for consistent performance across varied terrain. Known for aggressive handling and a narrow chassis, the YZ450F excels in sand and hard-pack racing environments.
- Capacity
- 449.0 ccm
- Engine
- Single, four-stroke
- Gearbox
- 5-speed
- Dry weight
- 99.3 kg
- Seat height
- 998 mm
- Power
- 56.0 HP (41.2 kW)
What’s new for the 2011 Yamaha YZ450F
vs the 2010| Spec | 2010 | 2011 |
|---|---|---|
| Fuel capacity | 6.10 litres (1.61 US gallons) | 6.20 litres (1.64 US gallons) |
| Front suspension | KYB® Speed-Sensitive System, inverted fork: fully adjustable, 12.2-in travel | KYB Speed-Sensitive System, inverted fork: fully adjustable, 12.2-in travel |
| Rear suspension | KYB® Fully adjustable single shock; 12.4-in travel | KYB Fully adjustable single shock |
Other years
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built purely for motocross racing and hard off-road riding, excelling on tracks and rough terrain rather than street use.
- Built for
- Sharp, high-revving, and razor-responsive, it rewards committed, active riding with explosive acceleration and precise cornering manners.
- Not ideal for
- It is not suited for commuting, touring, passengers, or casual low-speed street riding due to its lack of lights, mirrors, and road-going comfort features.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Will it fit you?
Worked out in your browser - nothing is sent to usEngine
- Capacity
- 449.0 ccm
- Power
- 56.0 HP (41.2 kW)
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.5639 HP/kg (dry)
- Bore x stroke
- 97.0 x 60.8 mm
- Compression
- 12.5:1
- Cooling system
- Liquid
- Fuel system
- Injection
- Starting
- Electric
- Ignition
- CDI
- Valves per cylinder
- 4
- Lubrication system
- Dry sump
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Multiplate, wet
Dimensions & weight
- Wheelbase
- 1491 mm
- Overall length
- 2192 mm
- Overall width
- 823 mm
- Overall height
- 1311 mm
- Seat height
- 998 mm
- Dry weight
- 99.3 kg
- Wet weight
- 111.1 kg
- Fuel capacity
- 6.20 litres
- Ground clearance
- 381 mm
- Oil capacity
- 1.20 litres
Chassis & suspension
- Frame
- Aluminum Bilateral Beam frame
- Front suspension
- KYB Speed-Sensitive System, inverted fork: fully adjustable, 12.2-in travel
- Rear suspension
- KYB Fully adjustable single shock
- Front wheel travel
- 305 mm
- Rear wheel travel
- 315 mm
- Rake (fork angle)
- 28.0°
- Trail
- 119 mm
Brakes & wheels
- Front brakes
- Single disc
- Front brakes diameter
- 250 mm
- Rear brakes
- Single disc
- Rear brakes diameter
- 245 mm
- Front tyre
- 80/100-21
- Rear tyre
- 120/80-19
Other
- Color options
- White/Red, Team Yamaha Blue/White)
- Modifications compared to previous model
- New clutch lever and pushrod for more consistent clutch feel during long motos.
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
What changed, year to year
Differences highlighted| Specification | 2008 | 2011 | 2013 | 2018 | 2022 | 2027 |
|---|---|---|---|---|---|---|
| Capacity | 449 cc | 449 cc | 449 cc | 449 cc | 449 cc | 450 cc |
| Dry weight | 99 kg | 99 kg | 99 kg | 99 kg | 99 kg | 99 kg |
| Seat height | 988 mm | 998 mm | 1001 mm | 975 mm | 965 mm | 965 mm |
| Fuel capacity | 6.8 L | 6.2 L | 6.1 L | 7.6 L | 6.1 L | 6.1 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the Yamaha YZ450F?
The 2011 Yamaha YZ450F has a Capacity of 449.0 ccm (27.40 cubic inches).
What engine power does the Yamaha YZ450F have?
The 2011 Yamaha YZ450F has a Power of 56.0 HP (41.2 kW).
How many gears does the Yamaha YZ450F have?
The 2011 Yamaha YZ450F has a Gearbox of 5-speed.
How much does the Yamaha YZ450F weigh?
The 2011 Yamaha YZ450F has a Dry weight of 99.3 kg (218.9 pounds).
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