Bestop 76303 User manual

Installation Instructions
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INSTALLATION TIME SKILL LEVEL
1-1/2 Hours 2 - Moderately Easy
TOOLS
Supertop for Truck
Vehicle Application:
7/16" and 9/16" 1/8" Bit
•Chevrolet Silverado 1500 / 2500 / 3500 6.5 ' Bed
1999 - 2011
Part Number: 76303
•GMC Sierra 6.5 ' Bed
1999 - 2011
Part Number: 76303
US Patent 6827391

Supertop for Truck Installation Instructions
Rev. G 0713 76303 pg. 2
Parts List and
Hardware Identification
Supertop Fabric Qty - 1
Side Panel, Right Qty - 1
Side Panel, Left Qty - 1
Rear Window Qty - 1
32" Buckle Straps Qty - 2
Elastic Garter Qty - 2
Foam Tape, 14' Qty - 1
Tension Straps Qty - 2
Tailgate Bracket,
Right, Part Number
412.08, Qty - 1
Bulb Seal, Part
Number 413.03, Qty - 1
1/4" x 1-1/2" Clevis Pin, Part
Number 410.95, Qty - 2
1/4-20 Cap Nut, Part Number
198.27, Qty - 12
#8 x 1/2" Self Tapping Screw,
Part Number 312.09, Qty - 1
1/4" Flat Washer, Part
Number 21.117.10, Qty - 14
Bow Tie Down Assembly,
Part Number 194.04, Qty - 2
Clamp, Part Number
411.75, Qty - 4
1/4" Fender Washer, Part
Number 410.94, Qty - 4
5/16" Flat Washer, Part
Number 117.26, Qty - 4
Tailgate Bracket,
Left, Part Number
412.09, Qty - 1
Bow Mount Bracket,
Left, Part Number
412.85, Qty - 1 Bow Mount Bracket,
Right, Part Number
412.84, Qty - 1 5/16" x 3/4" Clevis Pin, Part
Number 410.96, Qty - 2
Hitch Pin Clip, Part Number
409.71, Qty - 4
Rear Belt Rail, Right, Part
Number 413.46, Qty - 1
Rear Belt Rail, Left, Part
Number 413.47, Qty - 1
Front Bow Half, Part
Number 412.96, Qty - 2
Bow Coupler, Part Number
413.00, Qty - 3
Third Brake Light, Part
Number 397.52, Qty - 1
Front Belt Rail,
Right, Part
Number 496.20,
Qty - 1
Front Belt
Rail, Left, Part
Number 496.21,
Qty - 1
Rear Bow, Left, Part
Number 496.27, Qty - 1
Tailgate Bar, Part
Number 496.54,
Qty - 1
Rear Bow, Right, Part
Number 496.26, Qty - 1
Inner Retainer Bar,
Part Number 499.90,
Qty - 1
Outer Retainer Bar,
Part Number 499.91,
Qty - 1
Front Retainer Bar Bracket,
Right, Part Number 497.16,
Qty - 2

Supertop for Truck Installation Instructions
Rev. G 0713 76303 pg. 3
Mount Tailgate Brackets to
Rear Belt Rails
Assemble Retainer Bar
Locate the Bow Mount Brackets in the parts kit. Slide a 5/16" Flat Washer
over a 5/16" x 3/4" Clevis Pin. Insert the pin through the rear pivot hole on the
Bow Mount Bracket from the outside.
Slide a 1/4" Fender Washer over a 1/4" x 1-1/2" Clevis Pin and insert the pin
through the front slot of the Bow Mount Bracket from the outside.
Repeat this with both Bow Mount Brackets.
Assemble Bow Mounts Brackets
Locate the Right Front and Rear Belt Rails. Place the ends of the rails against
each other. Place the Right Bow Mount Bracket on top of the Belt Rails. Secure
the bracket to the rails with four (4) 1/4-20 Cap Nuts 1/4" Flat Washers.
Repeat this with the Left Side Bow Mount Bracket and Belt Rails.
Assemble Main Bow Mount Brackets
and Belt Rails
Right Rear Belt Rail
Right Tailgate Bracket
1/4-20 Cap Nut
Bow Mount Bracket
Rear Pivot
Hole Front Slot
5/16" Flat Washer
5/16" x 3/4" Clevis Pin
1/4" x 1-1/2"
Clevis Pin
1/4" Fender Washer
Bow Mount
Bracket
Rear Belt Rail
Front Belt Rail 1/4-20 Cap Nuts
Locate the Right Tailgate Bracket and the Right
Rear Belt Rail in the parts kit. Place the Right Tail-
gate Bracket over the rear stud on the Belt Rail so
that the bracket tab points away from the channel
on the Belt Rail. Use a 1/4-20 Cap Nut and 1/4" Flat
Washer to secure the bracket to the rail.
Repeat with the Left Tailgate Bracket and Rear Belt
Rail.
1/4" Flat
Washer
Locate a Front Retainer Bar Bracket and the Right
Front Belt Rail. Place the bracket over the front stud
which is the one that is 1 1/2" from the front of the
rail. Use a 1/4"-20 Cap Nut and 1/4" Flat Washer to
secure the bracket to the rail.
Repeat with the Left Front Belt Rail.
Mount Front Retainer Brackets to Front
Belt Rails
Right Front
Belt Rail
Front Retainer
Bar Bracket
1/4"-20
Cap Nut
1/4" Flat
Washer
1/4" Flat Washers
Assemble the two Retainer Bar halves by sliding the
inner half into the outer half and align the pre-drilled
holes. Install a #8 X 1/2” Self Drilling screw in to the
pre-drilled hole.

Supertop for Truck Installation Instructions
Rev. G 0713 76303 pg. 4
Install Belt Rail Assemblies
Locate the Clamps in the parts kit. Use two clamps
to secure each Belt Rail Assembly to the vehicle.
Place a Clamp as close to each end of the Belt Rail
as possible. Fully tighten the bolt on each Clamp.
Repeat this for both Belt Rail Assemblies.
Belt Rail Assembly
Rear
Clamp
Slide a Bow Tie Down Strap onto each of the Front
Bow Halves. Slide the two halves of the bow into a
Bow Coupler.
Assemble Front Bow
Bow Coupler
Front Bow Halves
Bow Tie Down
Straps
Install Foam Tape
Lay the Belt Rail Assemblies on top of the truck bed rail with the tab on the Tailgate Bracket toward the
center of the vehicle. The front of the rail should be 1-1/4” forward of the rear edge of the front wall of the
truck box.
Measure the distance between the inside edges of the right and left Belt Rail Assemblies at the front and
rear. Place them so that they are 63-1/2" at both places and are centered and square on the bed.
Install Belt Rail Assemblies
63-1/2"
63-1/2"
Front Edge of
Front Wall
Measurement between
Rails should be 63-1/2"
Belt Rail
Assembly
1/4"
Measure and cut a piece of Foam Tape that will fi t
the full length of the bottom of the Belt Rail Assem-
bly. Peel the backing off the tape a little at a time
and press the tape fi rmly into place on the Belt Rail
Assembly. Trim the tape to match the contour of the
Tailgate Bracket.
Repeat this with both Belt Rail Assemblies.
Tailgate Bracket
Rear Belt Rail
Peel Backing
off a little at
a time
Foam Tape

Supertop for Truck Installation Instructions
Rev. G 0713 76303 pg. 5
Place a 1/4" Fender Washer over the 1/4" x 1-1/2"
Clevis Pins installed in the Bow Mounts. Slide the
legs of the Front Bow Assembly over the Clevis Pins
and secure them with 1/4" Flat Washer and a Hitch
Pin Clip on each side of the vehicle.
Install Front Bow
Install Rear Bow Assembly
Front Bow
Assembly
Bow Tie
Down Strap
1/4" Fender
Washer
1/4" Flat
Washer
Hitch Pin
Clip
Rear Bow
Assembly
5/16" Flat
Washer
Hitch Pin
Clip
Cut Web Strap Reinforcement
Place the top fabric on a safe, clean cutting surface.
Locate the two (2) wide patches in the seal below
the window on the front panel of the top. Use a util-
ity knife to cut a slit through all the layers following
the indent in the seal.
Front Window
Cut slit in
reinforcement
Install Buckle Straps
Locate the two (2) 32" Buckle Straps in the parts
kit. Thread the end of each strap through the slits
from the vinyl (outside) side of the top. Pull the
straps through the slits until the back of the buckle
is against the slit.
Pull Strap
Through
Locate the two (2) Elastic Garters in the parts
kit. Slide a garter over each half of the Rear
Bow from the center so that the Garters will
hang above the rear window opening. Slide
the long tail of a Tension Strap onto each short
bow half and the buckle end onto the rear bow
half. Adjust the straps so there is about 3" of
strap beyond the buckle.
Slide the two (2) halves of the Rear Bow into
the remaining Bow Couplers. Slide the legs of
the Rear Bow Assembly over the 5/16" x 3/4"
Clevis Pins and secure them with a 5/16" Flat
Washer and a Hitch Pin Clip on each side of
the vehicle.
Tension
Straps
Elastic Garters

Supertop for Truck Installation Instructions
Rev. G 0713 76303 pg. 6
Thread Buckles on Straps
Thread the end of the 32" Buckle Straps through
the male half of each buckle.
Drape Fabric
over Cab Wrap Flaps from
front and Snap
to Bow
Snap Fabric to Front Bow
Drape the Supertop Fabric over the roof of the
cab with the backing side up and the front window
hanging down between the Front Bow and the cab
of the vehicle. Locate the two snap fl aps sewn to
the inside of the top. Wrap the fl aps around under
the bow from the front and snap them to the bow.
Strap
Buckle
Snap Fabric to Rear Bow
Carefully drape the fabric over the center and rear
bows. Make sure that the sides of the top are smooth
between the bows and that the Tension Straps are
inside of the outboard snaps on the rear bow.
Locate the two rear snap fl aps. Wrap them around
under the rear bow from the rear and snap them to
the bow.
Rear Window Opening
Short Bow
Rear Bow
Wrap Flaps from Rear
and Snap to Bow
Elastic
Garter
Elastic
Garter
Locate Tension Straps
inside outboard snaps

Supertop for Truck Installation Instructions
Rev. G 0713 76303 pg. 7
Secure the Front of the Top
Plastic Strip - Slip into
channel in Belt Rail
Adjust Bow Position
Place the Front Bow on the rear tooth at the front of
the Bow Mount Bracket.
Front Bow
Front
Place Bow in rear
tooth of Bow Mount
Bracket
Install Front Retainer Bar
Slide the Front Retainer Bar into the sleeve at the
bottom of the front deck panel and center it. Com-
press the front seal on the deck and push the bar
rearward so it is hooked under the Front Retainer
Bar Brackets.
Front Retainer Bar
Front Deck Panel
Front Deck Panel
Front Retainer Bar
Front Retainer
Bar Bracket
Start at the front corners of the top and work the
plastic strip sewn into the bottom of the panels into
the channel in the Side Belt Rail.

Supertop for Truck Installation Instructions
Rev. G 0713 76303 pg. 8
We recommend that the
Third Brake Light sup-
plied with this assembly
be professionally wired.
Locate the plastic clips sewn into the rear corners
of the top. Gently pull down on the rear bow and
pull down and back on the fabric to hook the clips
into the corner of the Tailgate Bracket on the Belt
Rail Assembly. Locate the plastic strip next to the
clip and hook it into the channel on the Side Belt
Rail. Make sure as you do this that the corner clip
remains hooked into the corner retainer.
Secure the Rear of the Top
Use a 0.136" drill bit to drill out the two dimpled
holes in the plastic mounting pad on the Third
Brake Light. Orient the Third Brake Light so that
the pad is horizontal along the Rear Bow and in the
center. Peel the backing tape off the bottom of the
mounting pad and press it onto the bow.
Drill 0.136"
Holes
Press Light onto
center of Rear
Bow
Install Third Brake Light
Tailgate
Opening
Plastic Strip - Slip into
channel in Belt Rail
Hook clip into
Tailgate Bracket
Use the holes in the Third Brake Light mounting pad
as a guide to center punch two holes in the Rear
Bow. Drill a 0.136" hole at each of these locations.
Install a #8 x 1/2" Self Tapping Screw at each of
these locations.
Unsnap the snap fl aps from the Rear Bow on the
driver side of the brake light. Run the wire from the
light along the bow and snap the fl aps around the
bow and the wire. Wrap the wire around the bow
down to the pickup bed rail.
Drill 0.136" Hole and
install #8 x 1/2" Self
Tapping Screws
Thread Wire through
Snap Flap
Secure Third Brake Light to
Rear Bow

Supertop for Truck Installation Instructions
Rev. G 0713 76303 pg. 9
Orient the Rear Window with the plastic J-Hook
toward the top.
Align the J-Hook on the top of the window with the
J-Hook sewn into the top above the rear window
opening. Slide them together until the Rear Window
is centered in the opening.
Engage the zippers on each side of the window, but
do not close them yet.
J-Hook
Rear Window
Inside of Top
Engage J-Hook on Rear
Window
Close
Zippers
Install Tailgate Bar on Rear
Window
Slide Rear Retainer Bar
onto Rear Window
Locate the Tailgate Bar and the Bulb Seal in the
parts kit. Slide the channel in the Bulb Seal over
the ledge on the Tailgate Bar.
Install Bulb Seal on
Tailgate Bar
Slide the Tailgate Bar onto the tube strip sewn to
the inside of the Rear Window and snap the center
of the window to the bar. Place the Tailgate Bar in
the Tailgate Brackets on the Belt Rail Assemblies.
Close the zippers on each side of the window.
Close the fl aps on each side of the window over
the zippers and fasten the snaps.
Check that the tailgate closes on the Bulb Seal.
Fasten Snap

Supertop for Truck Installation Instructions
Rev. G 0713 76303 pg. 10
Orient the Side Panels with the plastic J-Hook
toward the top and the zipper with the fl ap over
it toward the rear and determine which is for the
driver’s side of the vehicle and which is for the pas-
senger side.
Align the J-Hook on the top of the panel with the
J-Hook sewn into the top above the panel open-
ing. Slide them together. The J-Hook in the top is in
three pieces, so make sure that the J-Hook on the
Side Panel stays engaged through the splits.
Engage the front and rear zippers on the panel and
close them.
Work the plastic strip sewn into the bottom of the
Side Panel into the channel in the Belt Rail Assembly.
Fasten the Loop on the top of the Side Panel to the
Hook on the deck above the opening.
Repeat this procedure for the other Side Panel.
Zipper
Flap toward Rear
Tailgate
Opening
J-Hook
J-Hook
Install Side Panels
Side Rail
Plastic Strip - Slip
into Channel
Quarter
Panel
Adjust Tension on Top
Slide Front Bow
forward to increase
tension
Rolling the Rear Window
Roll Rear Window
Elastic Garters
Use the Elastic Garters on the Rear Bow to secure
the Rear Window in the open position. Unzip the
side zippers on the Rear Window, release the tail-
gate bar snap, and slide out the Tailgate Bar. Roll
the window from the bottom to the top and wrap an
Elastic Garter around each end of the window.
It may be necessary to increase the tension on the
top for a better fi t. In this case, move the Front Bow
forward to the next tooth in the Bow Mount Bracket.
Adjust the Tension Straps on the Rear Bow as nec-
essary for the best fi t.