Honda CRF450R 2023 - Engine and Drivetrain Specifications

■ Engine
Bore x stroke 96.000 x 62.138 mm (3.7795 x 2.4464 in)
Displacement 449.77 cm
3
(27.436 cu-in)
Compression
ratio
13.5 : 1
Valve clearance
(cold)
Intake
0.13 ± 0.03 mm (0.005
± 0.001 in)
Exhaust
0.28 ± 0.03 mm (0.011
± 0.001 in)
Recommended
engine oil
Honda 4-stroke motorcycle oil API Service
Classification SJ or higher, excluding oils
marked as “Energy Conserving” or “Resource
Conserving” SAE 10W-30, JASO T 903
standard MA
Engine oil
capacity
After draining
1.00 L (1.06 US qt, 0.88 Imp
qt)
After draining
and oil filter
change
1.04 L (1.10 US qt, 0.92 Imp
qt)
After
disassembly
1.35 L (1.43 US qt, 1.19 Imp
qt)
Idle speed 2,000 ± 100 rpm
■ Cooling system
Recommended
coolant
Pro Honda HP Coolant
Philippines
HONDA PRE-MIX COOLANT
Cooling capacity
After
draining
1.08 L (1.14 US qt, 0.95 Imp qt)
After
disassembly
1.14 L (1.20 US qt, 1.00 Imp qt)
■ Drive train
Primary reduction 2.357
Gear ratio
1st 2.133
2nd 1.706
3rd 1.421
4th 1.211
5th 1.043
Final reduction
CRF450RX 3.846
CRF450R/RWE 3.769
Gear shift pattern
Left foot-operated return system
1-N-2-3-4-5
20230714150511_42MKE6210_eng_BOOK Page 79 Friday, July 14 2023 15:07:32 JST
Specifications
Specifications
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