Honda CRF450L 2019 Owner's Manual & Off-Road Handbook page 186

Specifications
Item English
Drive train
Clutch type Wet, multi-plate type
Transmission 6-speed, constant mesh
Primary reduction
Gear ratio I
Gear ratio II
Gear ratio III
Gear ratio IV
Gear ratio V
Gear ratio VI
Final reduction
Left foot-operated return
Gear shift pattern
system 1-N-2-3-4-5-6
Electrical
HY93-C lithium-ion (li-ion)
Battery
12 V-4.5 Ah (20HR)
Ignition
Starting system
Spark plug NGK
Standard SILMAR9A-9S
NGK
For extended high
speed riding
SILMAR10A-9S
0.031 – 0.035 in
Spark plug gap
(0.8 – 0.9 mm)
Lights
Headlight
Brake/taillight
Turn signal light
Position light
Fuse
Main fuse
Other fuse
180
Technical Information
Metric
2.357
2.357
1.705
1.300
1.090
0.916
0.793
3.923
ECM
Electric
LED
LED
LED
LED
20 A
10 A