One finger removal
The BlackMax corners feature Extang’s impressive new “LeverLock” attachment. Pull back the lever and the tail rail unlocks and quickly disengages for bulk hauling. When the lever latches you know it’s locked. “LeverLock” securely stays in place and will not vibrate loose. All this with one finger! |
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Quick access to front of truck bed
Quickly place items in the bed near your cab door, snap on the tarp, jump in and go!
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Tarps designed for strength & good looks
Corners don’t buckle up due to parachute grade nylon corner reinforcements.Photo of reinforced corner Snaps & corners are backed with thick polymer forcing the corners and edges to lie smooth and look good in any weather. The thick polymer edging also keeps your snaps from ripping out!
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Snaps are your tonno’s most important part
Fiberglass reinforced nylon formula makes the BlackMax’s snaps strong and durable. Tested and proven under intense usage for years in the lab and field. Extang’s patented “MAXSNAPS” will not break. |
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Quicker installation
Our TUFFKLAMPS simply drop into the rail channels (works well with bed liners). Easy on. Clamps tight. |
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Bow height adjustment
Extang’s Monster Bows quickly spring on and off with no tools. It’s fast and easily done with one hand. The TUFFKLAMPs allow two bow heights: HIGH for maximum water shedding in harsh weather, and for improved gas mileage. LOW for sporty good looks and cold weather tonno attachment.
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Extang makes the ONLY tonnos that work well in cold climates

- Stud low for tight fit in hot weather
- Slide off, flip over, then slide on again
- Stud high for looser fit in cold weather
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