Undercover Flex User Manual
Quick start install guide
QUICK START INSTALL GUIDE
PAGE 1
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Install Parts Check List
Attach Side Mounting Rails
A: Flex hard folding
cover
B: Side mounting
rails, left and right
(pre- assembled)
C: Hardware bag &
Drain tubes (2)
Tools Needed:
9/16” wrench or socket
Note: The Flex was designed
from trucks that do not have
plastic bed liners, some
minor trimming may be
required to allow the cover to
fit properly.
A
B
C
Attach both side rails
to the truck bed. The
rails are left and right
specific and have
been pre-assembled
for your convenience.
Note: Refer to the
Model Specific Guide
for more specific
instructions on clamp-
ing the rails to the
truck.
Do not over-
tighten the clamp
assembly.
Clamps must
be checked periodically
for tightness.
Refer to Model Specific Guide for
Special Notes Regarding Your Model