Honda CRF 450 Rback 2003 forward

Water cooled, 449cc, Single, SOHC

Power: 55.74 HP (41 kW) @ 9000 rpm
Torque: 50 Nm (36.88 lb-ft) @ 6500 rpm
Final drive: Chain
Curb weight: 240.3 lbs
Category: Offroad
Tags: Cross
Engine and transmission
Engine type: 1 cylinders, 4-stroke, Single
Displacement: 449 cc (27.43 cubic inches)
Bore × stroke: 3.78 inch × 2.44 inch (oversquare - shortstroke)
Cooling system: Water cooled
Power: 55.74 HP (41 kW) @ 9000 rpm
Torque: 50 Nm (36.88 lb-ft) @ 6500 rpm
Throttle: Cable operated
Valves
Valve train: SOHC, variable
Valves per cylinder: 4
Fuel and ignition
Sparks per cylinder: 1
Fuel supply system: Carburetor
Ignition type: Digital CDI
Funnel diameter: 1.61 inch
Compression: 11.5:1
Engine mounting: Transverse
Lubrication system: Wet sump
Gear box: Manual 5-speed
Clutch: Wet, multiple discs, cable operated
Final drive: Chain
Spark plug pipe type: NGK, IFR8H11
Motor oil: Synthetic, 10W/40
Starter: Kick-starter
Dimensions
Physical measures
Length: 86.1 inch
Width: 32.5 inch
Height: 49.5 inch
Wheel base: 59.4 inch
Trail: 4.3 inch
Ground clearance: 12.99 inch
Seat height: 37.5 inch
Weight
Curb weight: 240.3 lbs
Dry weight: 222.7 lbs
Chassis and suspension
Frame type: aluminium, Single cradle frame
Front
Suspension: Cartridge - upside-down
Suspension travel: 12.4 inch
Fork angle: 27°
Brake: Single Disk, Ø9.45 inch
Tire: 80 / 100 R21 R
Tire pressure: 0.07 PSI
Rear
Suspension: mono shock, Swingarm
Suspension travel: 12.4 inch
Brake: Disk, Ø9.45 inch
Tire: 110 / 90 R19 R
Tire pressure: 0.07 PSI
Other
ABS available: No
Power-to-weight ratio: 0.38 KW/lbs (2.66 lbs/HP)
Fuel capacity: 1.95 gals
Number of riders: 1 person

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