TOOLS REQUIRED
•
Scissors or utility knife
•
Isopropyl alcohol
•
1/2" Wrench or socket
•
Phillips screwdriver
•
5/8" Drill bit & drill
PARTS INCLUDED IN THE BOX
1x Hard fold cover
A
1x Driver side rail
B
1x Passenger side rail
C
1x Bulkhead seal
D
2x Cover retainer clamps
E
6x Rectangle nuts
F
6x Clamp halfs
G
6x Washer
H
6X Lock washer
I
6x Hex bolt
J
2x Buckle ends
K
4x Screws
L
2x Drain tubes
M
1
Installing Seal: Bulkhead seal (D) is included with the
cover (A), clean the top of the bulkhead with soap and
water to remove dirt and debris. Clean the area with isopropyl
alcohol to remove wax or grease and to evaporate any
remaining water. Allow the surface to dry. Peel the backing
and adhere the seal from one
bulkhead edge to the other.
Remove any excess with
scissors or a utility knife.
Apply pressure evenly to the
entire seal to ensure proper
adhesion.
RealTruck UnderCover • 59 Absolute Dr., Rogersville, MO 65742 • 866-900-8800 ©RealTruck Group, Inc., 2023
NOTE: It is important that all areas where the bed cover
mounts are clean and free of debris prior to installing.
A
B
D
D
2019+ RAMBOX
FLEX
ULTRA FLEX
l
INSTALLATION SHEET
Any damaged or missing parts?
Parts will be shipped to you directly.
Call 866-900-8800 Mon - Fri 8:00 am - 5:00 pm CST
or email info@undercoverinfo.com
C
K
D
E
F
G
H
E
F
G
Components F-J come pre-assembled
K
L
2
Install Drain Tube in Rail: Attach the drain tube (M)
to the front of the side rails (B & C) to allow water to
be diverted out of the truck bed via the rail. The opposite end
of the drain tubes can be placed behind a bedliner, through
the bed plugs, or by drilling a 5/8" hole in the bulkhead.
Repeat on passenger side rail.
ARMORFLEX
l
M
L
J
I
H
I
J
M
Part# FX-B4_Install Rev. 11-30-23
M
Need help?
Do you have a question about the UnderCover FX31011 and is the answer not in the manual?
Questions and answers