Honda FourTrax Foreman Rubicon TRX520FM6 2020 Owner's Manual page 239

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
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Technical Information