Motocross Bikes

2004Honda CRF450R

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The 2004 Honda CRF450R is a big-bore four-stroke motocross racer that helped popularise four-strokes in the premier class. Its liquid-cooled 449.4cc single drives a five-speed gearbox and chain. A tall 953 mm seat, 106.5 kg wet weight and a 7.4-litre tank make it a serious competition machine.

Capacity: 449.4 ccm
Engine: Single, four-stroke
Gearbox: 5-speed
Dry weight: 103.1 kg
Seat height: 953 mm
Power: 44.9 HP (33.0 kW)

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Other years 2002 2003 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

Off-road & trail98%

Cornering70%

City riding10%

Daily riding8%

Touring5%

Two-up5%

Track55%

Best for: Built specifically for closed-course motocross racing over jumps, whoops, and rough terrain rather than any form of road use.
Built for: A light, razor-sharp, high-revving dirt machine that rewards aggressive inputs with explosive acceleration and pinpoint cornering agility.
Not ideal for: Not suitable for commuting, touring, passengers, or anyone seeking a comfortable, road-legal, or low-maintenance ride.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

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Your height

Inseam (optional)

Units

At 953mm, a rider of 68.9" with a 31" (estimated) inseam will not reach the ground comfortably on the 2004 Honda CRF450R, with a cramped knee angle of around 85 degrees and an upright riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at over 900 mm — Sky High →

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Full specifications

Engine

Capacity: 449.4 ccm
Power: 44.9 HP (33.0 kW)
Engine type: Single, four-stroke
Power/weight ratio: 0.4355 HP/kg (dry)
Bore x stroke: 96.0 x 62.1 mm
Compression: 11.8:1
Cooling system: Liquid
Fuel system: Carburettor
Starting: Kick
Ignition: CD with electronic advance
Valves per cylinder: 4

Transmission

Gearbox: 5-speed
Transmission type: Manual
Final drive: Chain
Clutch: Multi plate wet clutch

Dimensions & weight

Wheelbase: 1500 mm
Overall length: 2186 mm
Overall width: 825 mm
Seat height: 953 mm
Dry weight: 103.1 kg
Wet weight: 106.5 kg
Fuel capacity: 7.40 litres
Ground clearance: 335 mm
Oil capacity: 1.80 litres

Chassis & suspension

Frame: Aluminium twin tube
Front suspension: 47mm inverted Showa cartridge fork with 16-position rebound- and 16-position compression-damping adjustability
Rear suspension: Pro-Link Showa single shock with spring-preload, 17-position rebound-damping adjustability, and compression-damping adjustment separated into low speed (13 positions) and high-speed (3.5 turns
Front wheel travel: 310 mm
Rear wheel travel: 317 mm
Rake (fork angle): 26.8°
Trail: 109 mm

Brakes & wheels

Front brakes: Single disc
Front brakes diameter: 240 mm
Rear brakes: Single disc
Rear brakes diameter: 240 mm
Front tyre: 80/100-21
Rear tyre: 110/90-21

Specs last verified against published sources: September 2026.

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	2002	2004	2008	2015	2021	2027
Capacity	449 cc	449 cc	449 cc	450 cc	450 cc	450 cc
Dry weight	102 kg	103 kg	—	109 kg	107 kg	103 kg
Seat height	—	953 mm	955 mm	953 mm	965 mm	953 mm
Fuel capacity	7.5 L	7.4 L	7.2 L	6.4 L	6.4 L	7.1 L