Specifications - Honda CRF450X 2017 Owner's Manual & Competition Handbook

Item English
Dimension
Overall length 85.8 in
Overall width
32.3 in
Overall height 50.2 in
Wheelbase
58.5 in
Seat height 37.9 in
Footpeg height
17.0 in
Ground clearance 13.6 in
Frame
Type
F. suspension travel 11.0 in (279 mm)
stroke 12.4 in (315 mm)
R. suspension
travel 12.3 in (313 mm)
Tire size, front
DUNLOP
Tire size, rear
DUNLOP
Tire type
Tire pressure, front (cold) 15 psi (100 kPa, 1.0 kgf/cm
Tire pressure, rear (cold) 15 psi (100 kPa, 1.0 kgf/cm
F. brake, swept area
51.8 in
R. brake, swept area
60.6 in
unleaded gasoline, pump
octane number of 91 or
Fuel recommendation
1.90 US gal
Fuel capacity
Fuel reserve capacity 0.42 US gal
Caster angle
Trail length 4.53 in
Fork oil capacity
(except fork damper 11.0 US oz
per leg)
17 CRF450X̲31MEY710.indb 159 17 CRF450X̲31MEY710.indb 159
Metric Item
Engine
Type
2,180 mm
820 mm
Cylinder arrangement
1,275 mm
1,485 mm Bore and stroke
963 mm
Displacement
431 mm
Compression ratio
345 mm
Valve clearance (cold)
Twin tube
Telescopic fork,
Engine oil capacity
After draining
After draining and
Pro-link,
oil filter change
After disassembly
80/100 – 21 51M
D742FA
Transmission oil
capacity
110/100 – 18 64M
After draining
D756
After disassembly
bias-ply, tube type
2 Cooling system,
)
capacity
2
)
After draining
Single disc brake
After disassembly
2 2
(334.5 cm )
Carburetor
Single disc brake
2 2
(391.1 cm )
Type
Identification number
Main jet
higher
Jet needle
7.2 ℓ
Slow jet
1.6 ℓ
Pilot screw opening
27 03
Float level
115 mm
Idle speed
3
324 cm
English Metric
Drive train
Liquid cooled, 4-stroke Clutch type
Single 6 inclined from Transmission
vertical
Primary reduction
96.0 x 62.1
Gear ratio I
3.78 x 2.44 in
mm
Gear ratio II
3
27 .4 cu-in 449 cm
Gear ratio III
12.0 : 1
Gear ratio IV
Intake: 0.006 ± 0.001 in
Gear ratio V
(0.16 ± 0.03 mm)
Exhaust: 0.011 ± 0.001 in
Final reduction
(0.28 ± 0.03 mm)
Gear shift pattern
0.71 US qt 0.67 ℓ
Electrical
0.74 US qt 0.70 ℓ Battery
0.92 US qt 0.87 ℓ
Ignition
Starting system
0.69 US qt 0.65 ℓ
Spark plug : Standard
0.79 US qt 0.75 ℓ
1.28 US qt (1.21 ℓ)
1.53 US qt (1.45 ℓ)
Piston valve
Spark plug gap
FCR13C
#145
Light
NNEU
Headlight
#45 Fuse
1-1/8 turns out Main fuse
0.31 in 8.0 mm
1,700 ± 100 rpm

Specifications

Item English Metric
Wet, multi-plate type
5-speed, constant mesh
2.739
2.230
1.625
1.235
1.000
0.826
3.923
Left foot-operated return
system 1-N-2-3-4-5
YTZ7S
12V-6 Ah (10HR)
ICM
Electric, Kickstarter
NGK
IFR8H11
DENSO
VK24PRZ11
NGK
Optional
IFR9H11
DENSO
VK27PRZ11
0.039 – 0.043 in
(1.0 – 1.1 mm)
12V-35 W
15 A
159
Technical Information
2016/06/08 11:46:27 2016/06/08 11:46:27