Honda CRF450R 2005
Motocross / Racing
449cc
4-stroke
55.0hp
Power
218.5lb
Dry weight
37.6in
Seat height
12.4in
Front travel
2005 Honda CRF450R overview
The 2005 Honda CRF450R is a motocross racing bike powered by a 449 cc, liquid-cooled, four-stroke single with a carburetor, SOHC valve train and four valves. It produces 55 hp and 36.9 ft-lb of torque, with a five-speed transmission and kick start. The aluminum perimeter frame carries a 47 mm inverted Showa fork and Pro-Link Showa rear shock, with 12.4 in of front travel and 12.5 in at the rear. It has a 37.6 in seat height, 218.5 lb dry weight and 1.9 gal fuel capacity.
For 2005, updates include a new fourth-generation twin-spar aluminum frame, a redesigned rear subframe, lighter fork components, a titanium exhaust heat shield, a more durable mainshaft with stronger third and fifth gears, a new shift shaft, shift drum and forks, redesigned chain guides and rear fender, and a lighter aluminum clutch cable bracket.
Who it's for
This CRF450R is for motocross racers and riders focused on race-track use, not beginners looking for an easygoing trail bike. Its 55 hp 450-class engine calls for confident throttle control, while the 37.6 in seat height and kick start are practical fit considerations for riders choosing a full-size competition bike. The adjustable Showa suspension and long travel suit riders who want to set up the bike for track conditions and racing.
Quick facts
- The 2005 Honda CRF450R has a 449cc carbureted 4-stroke engine, a 5-speed gearbox and kick start.
- The 2005 CRF450R weighs 218.5 lb dry and has a 37.6 in seat height.
- The 2005 CRF450R runs 80/100-21 front and 110/90-19 rear tires.
- The 2005 CRF450R takes 0.7 US qt (0.66 L) of 10W-40 engine oil; change it every 6 races or about 15 hours.
- The 2005 CRF450R lists at $6,699 (US MSRP). It is not street legal in the US.
2005 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
- 36.9 ft-lb
- Cooling
- Liquid
- Configuration
- Single-cylinder
- Valve train
- SOHC
- Valves
- 4
- Engine oil
- 0.7 US qt (0.66 L)
- Oil type
- 10W-40
- Gearbox oil
- 0.6 US qt (0.59 L)
- Gearbox oil type
- Pro Honda HP Trans, GN4 or HP4 4-stroke oil, SAE 10W-40
- Coolant
- 1.1 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
- 218.5 lb
- Seat height
- 37.6″
- Ground clearance
- 13.4″
- Wheelbase
- 58.7″
- Width
- 32.3″
- Height
- 50.2″
- Length
- 86.3″
- Fuel capacity
- 1.9 gal
Price & warranty
- Colors
- Red
Frame & steering
- Frame material
- Aluminum
- Architecture
- Perimeter
- Rake
- 26.8°
- Trail
- 4.3″
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 51M
- Rear tire
- 110/90-19 62M
Brakes
- Front disc
- 240 mm
- Rear disc
- 240 mm
Stock features
- Street legal (US)
- No
Battery / electrical
- Battery
- No
2005 Honda CRF450R maintenance
From the maker's manuals. Tap a row to see the manual page.
Service intervals
- Change engine oil (first time)
- After the first break-in ride
- Change engine oil
- Every 6 races or about 15 hours
- Replace oil filter (first time)
- After the first break-in ride
- Replace oil filter
- Every 6 races or about 15 hours
- Change gearbox oil
- Every 6 races or about 15 hours
- Clean air filter
- Every race or about 2.5 hours
- Clean air filter
- Every moto (dusty riding condition)
- Inspect spark plug
- Every race or about 2.5 hours
- Replace piston and rings
- Every 6 races or about 15 hours
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 (optional)
- NGK IFR9H11
- Spark plug (optional, alternative)
- DENSO VK27PRZ11
Torque specs
- Oil drain bolt
- 12 ft‑lb (16 N·m, 1.6 kgf·m)
- Oil filter cover bolts
- 8.9 ft‑lb (12 N·m, 1.2 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 (128 N·m, 13.1 kgf·m)
- Upper triple clamp bolts
- 16 ft‑lb (22 N·m, 2.2 kgf·m)
- Lower triple clamp bolts
- 15 ft‑lb (20 N·m, 2.0 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)
- Front sprocket bolt
- 23 ft‑lb (31 N·m, 3.2 kgf·m)
- Chain adjuster locknut
- 20 ft‑lb (27 N·m, 2.8 kgf·m)
- Shock absorber top mount
- 32 ft‑lb (44 N·m, 4.5 kgf·m)
2005 Honda CRF450R photos
Honda CRF450R FAQ
How much horsepower does the 2005 Honda CRF450R have?
The 2005 Honda CRF450R produces 55 hp and 36.9 ft-lb of torque.
What engine is in the 2005 Honda CRF450R?
It has a 449 cc, liquid-cooled, four-stroke single-cylinder engine with a carburetor, SOHC valve train and four valves.
What is the seat height of the 2005 Honda CRF450R?
The seat height is 37.6 in.
How much does the 2005 Honda CRF450R weigh?
Its dry weight is 218.5 lb.
How much suspension travel does the 2005 Honda CRF450R have?
It has 12.4 in of front travel and 12.5 in of rear travel.
What is the fuel capacity of the 2005 Honda CRF450R?
The fuel capacity is 1.9 gal.
What engine oil does the 2005 Honda CRF450R use?
It uses SAE 10W-40 engine oil, with a capacity of 0.7 US qt (0.66 L).
Is the 2005 Honda CRF450R street legal?
It is not street legal in the US.
What was the MSRP of the 2005 Honda CRF450R?
The US MSRP was $6,699.
What size tires does the 2005 Honda CRF450R use?
80/100-21 front and 110/90-19 rear.
What spark plug does the 2005 Honda CRF450R take?
NGK IFR8H11, gapped 0.039 – 0.043 in (1.0 – 1.1 mm).
What chain and sprockets does the 2005 Honda CRF450R use?
A 520 chain with 114 links on a 13-tooth front and 48-tooth rear sprocket.
Other Honda CRF450R model years
Specs from Honda's owner's manual and Honda's website. Updated .