Honda FourTrax Foreman TRX500FM2 2018 Owner's Manual page 202

Guards
Front Boot Guards & Front Driveshaft Guards
Refer to Safety Precautions on page 115.
FRONT
(2) (1) (1) (2)
(1) front boot guards (2) front driveshaft guards
Check the front boot guards (1) and front driveshaft guards (2) for
cracks, damage or looseness.
Tighten any loose fasteners. Replace the front boot guards and front
driveshaft guards as required.
192 Servicing Your Honda