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Honda CRF450R 2004

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Motocross / Racing

2004 Honda CRF450R

449cc

4-stroke

55.0hp

Power

222lb

Dry weight

37.6in

Seat height

12.4in

Front travel

2004 Honda CRF450R overview

Where it ridesRace-ready
  • Street
  • Trail
  • Woods
  • Rocks
  • Desert
  • Track

The 2004 Honda CRF450R is a motocross race bike powered by a 449 cc, liquid-cooled, single-cylinder four-stroke with a SOHC four-valve head and carburetor. It has a five-speed transmission, kick start, an aluminum perimeter frame, and a 2 gal fuel capacity. Suspension travel is 12.4 in up front and 12.5 in at the rear, with a 47 mm inverted Showa cartridge fork and a Pro-Link Showa shock. Dry weight is 222 lb, and seat height is 37.6 in.

Updates for 2004 include a lighter, higher-compression piston; a lighter generator; revised ignition timing and gearing; a lighter silencer moved about 2 in (50 mm) forward; honed fork tubes with improved damping; Renthal 971-bend bars; a quick-adjust clutch perch; Dunlop 742/756 tires; and 3 pounds less weight.

Who it's for

This CRF450R suits motocross racers and experienced track riders looking for a high-output four-stroke with adjustable suspension and a five-speed gearbox. Its 55 hp, 222-lb dry weight, and 37.6 in seat height make it a substantial race bike best suited to riders comfortable managing strong power and a tall riding position on motocross tracks. It is also a fit for racers who want suspension damping adjustments to tune the bike for their weight and track conditions.

Quick facts

  • The 2004 Honda CRF450R has a 449cc carbureted 4-stroke engine, a 5-speed gearbox and kick start.
  • The 2004 CRF450R weighs 222 lb dry and has a 37.6 in seat height.
  • The 2004 CRF450R runs 80/100-21 front and 110/90-19 rear tires.
  • The 2004 CRF450R takes 0.70 US qt (0.66 L) of 10W-40 engine oil.
  • The 2004 CRF450R listed at $6,499 (US MSRP).

2004 Honda CRF450R photos

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2004 Honda CRF450R specifications

Engine

Displacement
449cc
Stroke
4-stroke
Fuel system
Carburetor
Bore × stroke
96 × 62.1 mm
Compression
12.0:1
Horsepower
55.0 hp
Torque
36.5 ft-lb
Cooling
Liquid
Configuration
Single-cylinder
Valve train
SOHC
Valves
4
Oil chamber
Dual
Engine oil
0.70 US qt (0.66 L)
Oil type
10W-40
Gearbox oil
0.62 US qt (0.59 L)
Gearbox oil type
10W-40
Coolant
1.09 US qt (1.03 L)

Clutch

Type
Wet multiplate
Actuation
Cable

Drivetrain

Starting
Kick
Transmission
5-speed
Chain size
520
Chain links
114
Front sprocket
13T
Rear sprocket
48T

Dimensions

Dry weight
222 lb
Seat height
37.6″
Ground clearance
13.4″
Wheelbase
58.5″
Width
32.6″
Height
49.7″
Length
86.4″
Fuel capacity
2 gal

Price & warranty

Colors
Red

Frame & steering

Frame material
Aluminum
Architecture
Perimeter
Rake
26.9°
Trail
4.25″

Suspension

Front
47mm inverted Showa cartridge fork with 16-position rebound and 16-position compression damping adjustability
Front travel
12.4″
Rear
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)
Rear travel
12.5″

Wheels & tires

Front wheel
21″
Rear wheel
19″
Front tire
80/100-21
Rear tire
110/90-19

Brakes

Front disc
240 mm
Rear disc
240 mm

Battery / electrical

Battery
No

2004 Honda CRF450R maintenance

From the maker's manuals. Tap a row to see the manual page.

Spark plug

Spark plug
NGK IFR8H11
Plug gap
0.039 – 0.043 in (1.0 – 1.1 mm)
Spark plug (alternative)
DENSO VK24PRZ11
Spark plug (for extended high speed riding)
NGK IFR9H11
Spark plug (for extended high speed riding, alternative)
DENSO VK27PRZ11

Torque specs

Oil drain bolt
12 ft‑lb (16 N·m, 1.6 kgf·m)
Oil filter cover bolts
7.4 ft‑lb (10 N·m, 1.0 kgf·m)
Gearbox oil drain plug
16 ft‑lb (22 N·m, 2.2 kgf·m)
Front axle nut
65 ft‑lb (88 N·m, 9.0 kgf·m)
Front axle pinch bolts
15 ft‑lb (20 N·m, 2.0 kgf·m)
Rear axle nut
94 ft‑lb (127 N·m, 13.0 kgf·m)
Upper triple clamp bolts
17 ft‑lb (23 N·m, 2.3 kgf·m)
Lower triple clamp bolts
15 ft‑lb (21 N·m, 2.1 kgf·m)
Steering stem nut
80 ft‑lb (108 N·m, 11.0 kgf·m)
Handlebar clamp bolts
16 ft‑lb (22 N·m, 2.2 kgf·m)
Front brake caliper mounting bolts
22 ft‑lb (30 N·m, 3.1 kgf·m)
Front brake disc nuts
12 ft‑lb (16 N·m, 1.6 kgf·m)
Rear brake disc nuts
12 ft‑lb (16 N·m, 1.6 kgf·m)
Rear sprocket nuts
24 ft‑lb (32 N·m, 3.3 kgf·m)
Chain adjuster locknut
19 ft‑lb (26 N·m, 2.7 kgf·m)
Shock absorber mounting bolts
32 ft‑lb (44 N·m)

Parts that fit the 2004 Honda CRF450R

Exact parts for this bike. Tap one to see every store selling it, cheapest first.

Maintenance

Oil, filters, spark plug, battery, brakes and drive parts you replace as you ride.

Tires

Stock sizes, from the maker's manual.

Prices include shipping where the store lists it and were checked Nov 1, 2026. A store that doesn't list its shipping is placed as if it charged what the other stores do. Prices change, so confirm at the store before you buy.

2004 Honda CRF450R vs 2003

New for 2004: A lighter, higher-compression piston, a lighter generator, revised ignition timing and gearing, a lighter silencer moved about 2 in (50 mm) forward, honed fork tubes with improved damping, Renthal 971-bend bars, a quick-adjust clutch perch, Dunlop 742/756 tires and 3 pounds less weight. Of the specs below, the 2004 Honda CRF450R has a $200 higher MSRP, is 3 lb lighter, sits 0.1 in taller, has 0.1 in more rear travel, has 12.0:1 compression (was 11.5:1), has 0.1 in more ground clearance and has a 48T rear sprocket (was 50T), compared with the 2003 model.

Spec20032004Changed
MSRP$6,299$6,499New
Displacement449ccSame
Dry weight225 lb222 lbNew
Seat height37.5 in37.6 inNew
Front travel12.4 inSame
Rear travel12.4 in12.5 inNew
Fuel2 galSame
Gearbox5-speedSame
Front tire80/100-21Same
Rear tire110/90-19Same
Compression11.5:112.0:1New
Ground clearance13.3 in13.4 inNew
Rear sprocket50T48TNew

Honda CRF450R FAQ

  1. How much horsepower does the 2004 Honda CRF450R make?

    It makes 55 hp.

  2. What engine does the 2004 Honda CRF450R have?

    It has a 449 cc liquid-cooled, single-cylinder four-stroke engine with a SOHC four-valve head and carburetor.

  3. What is the seat height of the 2004 Honda CRF450R?

    The seat height is 37.6 in.

  4. How much does the 2004 Honda CRF450R weigh?

    Its dry weight is 222 lb.

  5. How much suspension travel does the 2004 Honda CRF450R have?

    It has 12.4 in of front travel and 12.5 in of rear travel.

  6. How much fuel does the 2004 Honda CRF450R hold?

    The fuel capacity is 2 gal.

  7. What oil does the 2004 Honda CRF450R use?

    It uses 10W-40 engine oil, with a capacity of 0.7 US qt (0.66 L).

  8. What was the MSRP of the 2004 Honda CRF450R?

    The MSRP was $6,499.

  9. What size tires does the 2004 Honda CRF450R use?

    80/100-21 front and 110/90-19 rear.

  10. What spark plug does the 2004 Honda CRF450R take?

    NGK IFR8H11 (or DENSO VK24PRZ11), gapped 0.039 – 0.043 in (1.0 – 1.1 mm).

  11. What chain and sprockets does the 2004 Honda CRF450R use?

    A 520 chain with 114 links on a 13-tooth front and 48-tooth rear sprocket.

  12. Is the 2004 Honda CRF450R different from the 2003 model?

    Yes. New for 2004: a lighter piston with a higher-compression crown, a lighter generator with revised ignition timing, revised gearing (13/48), a lighter silencer moved about 2 in (50 mm) forward, honed fork tubes and improved damping, Renthal 971-bend aluminum handlebars, a quick-adjust clutch perch, new footpeg hinges, a non-slip seat cover, a new front fender and number plate, Dunlop 742/756 tires and 3 pounds less weight. Among the main specs, the 2004 Honda CRF450R has a $200 higher MSRP, is 3 lb lighter, sits 0.1 in taller, has 0.1 in more rear travel, has 12.0:1 compression (was 11.5:1), has 0.1 in more ground clearance and has a 48T rear sprocket (was 50T), compared with the 2003 model.

Other Honda CRF450R model years

Specs from Honda's owner's manual and Honda's website. Updated .