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Specifications
(cont d)
echnical Infor ation
Item English Metric
Dimension
Overall length
CRF450RX:
85.6 in
CRF450R/RWE:
85.9 in
CRF450RX:
2,175 mm
CRF450R/RWE:
2,183 mm
Overall width 32.6 in 827 mm
Overall height 49.6 in
CRF450RX:
1,259 mm
CRF450R/RWE:
1,260 mm
Wheelbase
CRF450RX:
58.1 in
CRF450R/RWE:
58.3 in
CRF450RX:
1,477 mm
CRF450R/RWE:
1,482 mm
Seat height 37.8 in
CRF450RX:
959 mm
CRF450R/RWE:
960 mm
Footpeg height
CRF450RX:
16.4 in
CRF450R/RWE:
16.5 in
CRF450RX:
417 mm
CRF450R/RWE:
418 mm
Ground clearance 12.9 in 328 mm
Frame
Type Twin tube
F. suspension
Telescopic fork,
travel 10.55 in (268 mm)
stroke 12.01 in (305 mm)
R. suspension
Pro-link,
CRF450RX:
travel 12.28 in (312 mm)
CRF450R/RWE:
travel 12.36 in (314 mm)
Tire size, front
CRF450RX: 90/90-21 54M
CRF450R/RWE: 80/100-21 51M
DUNLOP
CRF450RX:
AT81F
CRF450R/RWE:
MX3SF
Tire size, rear
CRF450RX: 120/90-18 65M
CRF450R/RWE: 120/80-19 63M
DUNLOP
CRF450RX:
AT81
CRF450R/RWE:
MX3S
Tire type bias-ply, tube
Tire pressure, front
(cold)
15 psi (100 kPa, 1.0 kgf/cm
2
)
Tire pressure, rear
(cold)
15 psi (100 kPa, 1.0 kgf/cm
2
)
F. brake, swept area
Single disc brake
56.0 in
2
(361.0
cm
2
)
R. brake, swept
area
Single disc brake
60.5 in
2
(390.3
cm
2
)
Fuel
unleaded gasoline, pump octane
number of 91 or higher
Fuel tank capacity
CRF450RX:
2.25 US gal
CRF450R/RWE:
1.66 US gal
CRF450RX:
8.5 ℓ
CRF450R/RWE:
6.3 ℓ
Caster angle
CRF450RX: 27°26’
CRF450R/RWE: 27°22’
Trail length 4.6 in 116 mm
Fork oil capacity
(except damper)
CRF450RX:
12.2 US oz
CRF450R/RWE:
12.0 US oz
CRF450RX:
360 cm
3
CRF450R/RWE:
356 cm
3
Fork oil capacity
(damper)
8.2 US oz 243 cm
3
Item English Metric
Engine
Type Liquid cooled, 4-stroke
Cylinder
arrangement
Single 10° inclined
from vertical
Bore and stroke
3.7795 x
2.4464 in
96.000 x
62.138 mm
Displacement 27.436 cu-in 449.77 cm
3
Compression ratio 13.5 : 1
Valve clearance
(cold)
Intake: 0.005 ± 0.001 in
(0.13 ± 0.03 mm)
Exhaust:0.011 ± 0.001 in
(0.28 ± 0.03 mm)
Engine oil capacity
after draining 1.06 US qt 1.00 ℓ
after draining and
oil filter change
1.10 US qt 1.04 ℓ
after
disassembly
1.43 US qt 1.35 ℓ
Throttle body
Identification
number
GQ2DA
Idle speed 2,000 ± 100 rpm
Cooling system
Cooling capacity
after draining 1.13 US qt 1.07 ℓ
after
disassembly
CRF450RX:
1.22 US qt
CRF450R/RWE:
1.19 US qt
CRF450RX:
1.15 ℓ
CRF450R/RWE:
1.13 ℓ
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