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-6E. 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.
Once you have the clamp extensions on the cab and
tailgate end of the rails as shown in Figure 5E and tighten
the set screws 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.
BR
BL
FR
FL
FIG. 6A
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!
FIG. 5E
FIG. 5D
Foam
Rail
Top Cover
FIG. 5F
Clamp Extension
Rail
Set Screw
FIG. 6B
