5
STEP 6: INSTALLING THE CLAMP EXTENSIONS
Slide the clamp extensions on the tailgate and cab end of
each rail as pictured in Figure 6A-6F. Ensure that your
tailgate end and cab end extensions are in the correct
orientation and have the correct stick on shims. Each clamp
extension is labeled for front left (FL), front right (FR), back
left (BL), and back right (BR). The extensions go on the
corners shown in figure 6A.
Next slide the extension so they line up flush with the end
of the clamp relief as shown in Figure 6F and tighten with
a 5/32” Allen Wrench. If you have trouble sliding on the
clamp extension, make sure your set screw is not sticking
out the top of the clamp extension.
B
BL
F
FL
FIG.
Next mark where the front of the rails sit and mark this position with masking tape, this will be a guide for placing your
foam.
(FIG 5D).
Now pull the cover back until there is room to apply the foam. Lay the foam on the front sill of the truck
from rail to rail, trimming the excess with a utility knife
(FIG 5E).
Now scoot the rails and canister back on the foam and double check that your tailgate seal engagement is good. You can
now install your top cover with the two included screws while making sure it aligns with the front of your rails
(FIG 5F).
WARNING: Proper top cover foam installation is important for getting the best possible water resistance out of
your cover!
If there is a gap between the foam on the underside of the installed Top Cover and the front sill of the truck
bed, use the extra roll of foam included in the kit to close the gap. Double up the foam on the front sill and trim the ends
even with the inside of the rails.
FIG. 5E
FIG. 5D
Outside of Truck
Bed
Clamp
Extension
Rail
Set Screw
Shim Bracket
Stick on
Shim
FIG. 6C
Foam
Rail
Top Cover
FIG. 5F
FIG. 6B
First Hook on
Outside Groove
Roll up and Slide
onto inside groove
Inside
Groove