Honda FourTrax Rubicon TRX520FA5 2020 Owner's Manual page 253

Vehicle Identification
Color Label & Code
The color label (1) is attached on the left side of the frame.
The color code is helpful when ordering replacement parts. You may
record the color and code in the Quick Reference section at the rear
of this manual.
LEFT SIDE
(1)
(1) color label
Technical Information 243