Specifications - Honda CRF450R 2017 Owner's Manual & Competition Handbook

Specifications

Item English
Dimension
Overall length 85.9 in
Overall width 32.6 in
Overall height 50.2 in
Wheelbase 58.3 in
Seat height 37.8 in
Footpeg height 16.5 in
Ground clearance 12.9 in
Frame
Type
Telescopic fork,
F. suspension travel 10.55 in (268 mm)
stroke 12.01 in (305 mm)
R. suspension
travel 12.36 in (314 mm)
80/100 – 21 51M
Tire size, front
DUNLOP
120/80 – 19 63M
Tire size, rear
DUNLOP
Tire type bias-ply, tube
Tire pressure, front (cold) 15 psi (100 kPa, 1.0 kgf/cm
Tire pressure, rear (cold) 15 psi (100 kPa, 1.0 kgf/cm
Single disc brake
F. brake, swept area
56.0 in
Single disc brake
R. brake, swept area
60.5 in
unleaded gasoline, pump
Fuel
octane number of 91 or higher
Fuel tank capacity 1.66 US gal
Caster angle
Trail length 4.6 in
Fork oil capacity
11.9 US oz
(except damper)
Fork oil capacity
8.2 US oz
(damper)
Metric Item
Engine
2,183 mm Type
827 mm
Cylinder arrangement
1,274 mm
Bore and stroke
1,482 mm
960 mm
Displacement
418 mm
Compression ratio
328 mm
Valve clearance (cold)
Twin tube
Engine oil capacity
after draining
Pro-link,
after draining and oil
filter change
after disassembly
MX3SF
Throttle body
Identification number
MX3S
Idle speed
Cooling system
2 )
Cooling capacity
2 )
after draining
after disassembly
2 (361.0 cm 2 )
2 2
(390.3 cm )
6.3 ℓ
27°22'
116 mm
352 cm 3
243 cm 3
English Metric
Drive train
Liquid cooled, 4-stroke Clutch type
Single 10° inclined Transmission
from vertical
Primary reduction
3.7795 x 96.000 x
Gear ratio I
2.4464 in 62.138 mm
Gear ratio II
27.436 cu-in 449.77 cm 3
Gear ratio III
13.5 : 1
Gear ratio IV
Intake: 0.005 ± 0.001 in
(0.13 ± 0.03 mm) Gear ratio V
Exhaust:0.011 ± 0.001 in
Final reduction
(0.28 ± 0.03 mm)
Gear shift pattern
1.06 US qt 1.00 ℓ
Electrical
Ignition
1.10 US qt 1.04 ℓ
Starting system
1.43 US qt 1.35 ℓ
Spark plug :
GQ2DA
2,000 ± 100 rpm
Spark plug gap
1.08 US qt 1.02 ℓ
1.19 US qt 1.13 ℓ

Specifications

Item English
Wet, multi-plate type
5-speed, constant mesh
2.357
2.133
1.706
1.421
1.211
1.043
3.769
Left foot-operated return
system 1-N-2-3-4-5
ECM
Kickstarter
NGK
Standard SILMAR9A-9S
For extended high NGK
speed riding
SILMAR10A – 9S
0.031 – 0.035 in
(0.8 – 0.9 mm)
Technical Information
Metric
149