For an over-the-rail bedliner – Extang Platinum BlackMax General Installation User Manual
Page 2

Attach “U” clamp to side rail clamp
with allen bolt. Insert side rail clamp
all the way into rail.
Insert bow onto top or bottom peg.
(Top peg for performance, Bottom for good looks.)
Ends are spring loaded
for easy installation.
Push and hold on
spring end and let the
other end slide on with
the spring action.
Attach tarp by starting
at the corners, and
snap in place.
EASY USE OF TRUCK BED
Tarp may be rolled up and secured with
Velcro® for bulk hauling
For each clamp mark on your bedliner a 1-1/2” x 3”
hole as shown above. Remove clamp. Cut holes in
bedliner. Reinsert side rail clamp. Return to step 6.
Side rail clamped to bed with bow
attached.
Studs Down
Slides Off
Rotate 180°
Studs Up
SUMMER SETTING
Takes up slack in tarp
caused by warm weather.
WINTER SETTING
Allows more slack in tarp
for cold temperatures.
STANDARD CLAMP
IMPORT CLAMP
For an OVER-THE-RAIL Bedliner
A
DIAGRAM
B
DIAGRAM
Start at
Corners
SPECIAL FEATURE
Weather-adjustable Snaps
Clamp Spacing
(Same for each side)
See the stickers located on each side
rail for clamp position, or refer to the
dimensions given below.
Note: Remove stickers
after installation.
Longer Clamps
Some trucks use different sizes of clamps to fit
curved sidewalls. Longer clamps go in the
forwardmost (Cab) positions while the shorter
clamps hold the rails at the rear (tailgate) end.
Insert side rail
clamp all the
way into rail.
Place the rail assembly
over the side of the truck
box. Center rails evenly
between cab and tailgate.
(
NOTE: Some applications have
rubber risers (rectangular rubber
pads.) A riser must go toward
tailgate. Some applications will
have a riser at both ends, (most
have no riser).
5
6
7
8
9
Extang Corporation, 5400 S. State Road, Ann Arbor, MI 48108, 734 677-0444, Fax: 734 677-8409
Visit us at:
extang.com
SPECIAL
FEATURE:
Two pegs
offer two
height
adjustments.
Note:
Bow End does not
fit between pegs.
Upper
Peg
Lower
Peg
Do Not
Place
Between
the Pegs
Place Clamp
Here
STICKER
LONGBED
(4 clamps)
SHORTBED
(3 clamps)
Short Clamps
Long Clamps
Short Clamp
Long
Clamps
FOR INSTALLATION IN THE
FOLLOWING TRUCK MODELS:
Ford HD Long-Bed
Ford HD Short-Bed