Motocross Bikes
2005Yamaha YZ450F
39 fields on record
The 2005 Yamaha YZ450F is a high-performance motocross machine built for competitive and experienced riders seeking aggressive trail and track performance. Powered by a potent 449cc four-stroke single-cylinder engine with a 12.5:1 compression ratio, it delivers impressive power and torque. The bike is renowned for its responsive handling, advanced Kayaba inverted fork suspension, and race-ready capabilities that made it a dominant force in 450cc motocross competition.
- Capacity
- 449.0 ccm
- Engine
- Single, four-stroke
- Gearbox
- 5-speed
- Dry weight
- 98.4 kg
- Seat height
- 996 mm
- Power
- 44.9 HP (33.0 kW)
What’s new for the 2005 Yamaha YZ450F
vs the 2004| Spec | 2004 | 2005 |
|---|---|---|
| Dry weight | 97.0 kg (213.8 pounds) | 98.4 kg (216.9 pounds) |
| Front suspension | Telescopic fork | 48mm Kayaba inverted telescopic fork w/adjustable compression and rebound damping |
| Rear suspension | Swingarm (linked type monocross) | Kayaba single shock w/adjustable preload, compression and rebound damping and separate hi/lo-speed compression adjuster |
Other years
2004
2005
2006
2007
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 serious off-road riding, not for commuting or general road use.
- Built for
- A light, high-revving, race-bred single-cylinder machine that rewards aggressive riding, quick direction changes, and confident throttle control.
- Not ideal for
- Not suitable for riders wanting a comfortable commuter, a passenger-friendly bike, or any form of long-distance road touring.
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
- 44.9 HP (33.0 kW)
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.4563 HP/kg (dry)
- Bore x stroke
- 95.0 x 63.4 mm
- Compression
- 12.5:1
- Cooling system
- Liquid
- Fuel system
- Carburettor
- Starting
- Electric
- Ignition
- CDI
- Valves per cylinder
- 1
- Lubrication system
- Dry sump
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Multiplate, wet
Dimensions & weight
- Wheelbase
- 1486 mm
- Overall length
- 2172 mm
- Overall width
- 828 mm
- Seat height
- 996 mm
- Dry weight
- 98.4 kg
- Wet weight
- 108.0 kg
- Fuel capacity
- 6.80 litres
- Ground clearance
- 371 mm
- Oil capacity
- 1.20 litres
Chassis & suspension
- Front suspension
- 48mm Kayaba inverted telescopic fork w/adjustable compression and rebound damping
- Rear suspension
- Kayaba single shock w/adjustable preload, compression and rebound damping and separate hi/lo-speed compression adjuster
- Front wheel travel
- 300 mm
- Rear wheel travel
- 318 mm
- Rake (fork angle)
- 27.2°
- 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
- 80/80-21
- Rear tyre
- 110/90-19
Other
- Color options
- Team Yamaha Blue/White
Specs last verified against published sources: .
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 | 2004 | 2005 | 2010 | 2016 | 2021 | 2027 |
|---|---|---|---|---|---|---|
| Capacity | 449 cc | 449 cc | 449 cc | 449 cc | 449 cc | 450 cc |
| Dry weight | 97 kg | 98 kg | 99 kg | 99 kg | 99 kg | 99 kg |
| Seat height | 995 mm | 996 mm | 998 mm | 975 mm | 965 mm | 965 mm |
| Fuel capacity | 6.8 L | 6.8 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 2005 Yamaha YZ450F has a Capacity of 449.0 ccm (27.40 cubic inches).
What engine power does the Yamaha YZ450F have?
The 2005 Yamaha YZ450F has a Power of 44.9 HP (33.0 kW).
How many gears does the Yamaha YZ450F have?
The 2005 Yamaha YZ450F has a Gearbox of 5-speed.
How much does the Yamaha YZ450F weigh?
The 2005 Yamaha YZ450F has a Dry weight of 98.4 kg (216.9 pounds).
Shop this bike
Affiliate linksWe may earn a commission from qualifying eBay or Amazon purchases made through these links. As an Amazon Associate I earn from qualifying purchases.
Please log in or register if you'd like to leave a comment.
Own one? Add it to My Garage and write an owner review with an Owner badge.