Undercover Flex - FX51016 (Image)
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Undercover Flex - FX51016 - 2017-2024 Nissan Titan / 2016-2024 Titan XD - 6.5 ft. Bed

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Vehicle Specific
2199   – Reward Points
  • $1099.99

STYLE: Hard Fold Up Tonneau Cover
  • Easy clamp on installation
  • Aluminum panels
  • Stands behind the cab for total bed access
Select your vehicle

UnderCover Flex - Logo


UnderCover Flex - Main Image


The UnderCover Flex is a hard folding truck bed cover that gives you the ultimate control of your truck bed, offering three secure riding positions. The cover is easy to remove, requires no drilling for installation, and is mounted flush with your trucks bed rails making it the most watertight hard folding cover on the market. The Flex is constructed with heavy-duty FRP panels providing more strength, durability and dent resistance than aluminum panels.


Each Flex has a bed rail mounting system equipped with rubber seals and drain tubes that carry water away from and out of the bed, keeping your gear dry and secure. The Flex is backed by a 3-year warranty making it America's favorite hard folding tonneau cover.


  • Low-Profile Design
  • 100% Bed Access
  • FRP Top Skin Panels
  • Weather Resistant
  • Three Secure Driving Positions
  • Heavy-Duty Construction
  • Easy, No-Drill Install
  • UV Protective Black Finish
  • Made in the USA


UnderCover Flex - Full Bed Access
Full Bed Access


Built-in prop rods secure the cover allowing your truck to be driven with the cover fully open.


UnderCover Flex - Weather Resistant
Weather Resistant


Rubber seals and drain tubes channel water away from and out of the bed.


UnderCover Flex - Heavy Duty Construction
Heavy Duty Construction


The Flex is constructed with heavy-duty FRP panels providing more strength, durability and dent resistance than aluminum panels.


UnderCover Flex - Simple Operation
Simple Operation


Easy-to-use slam latches are mounted on both sides of the cover, allowing the cover to be opened from either side of the truck.
  • Fitment Type
    Vehicle Specific
Year Make Model Bed Length
2016 Nissan Titan XD Crew Cab - 6.5 ft. Bed
2016 Nissan Titan XD King Cab - 6.5 ft. Bed
2017 Nissan Titan King Cab - 6.5 ft. Bed
2017 Nissan Titan XD Crew Cab - 6.5 ft. Bed
2017 Nissan Titan XD King Cab - 6.5 ft. Bed
2018 Nissan Titan King Cab - 6.5 ft. Bed
2018 Nissan Titan XD Crew Cab - 6.5 ft. Bed
2018 Nissan Titan XD King Cab - 6.5 ft. Bed
2019 Nissan Titan King Cab - 6.5 ft. Bed
2019 Nissan Titan XD Crew Cab - 6.5 ft. Bed
2019 Nissan Titan XD King Cab - 6.5 ft. Bed
2020 Nissan Titan King Cab - 6.5 ft. Bed
2020 Nissan Titan XD Crew Cab - 6.5 ft. Bed
2020 Nissan Titan XD King Cab - 6.5 ft. Bed
2021 Nissan Titan King Cab - 6.5 ft. Bed
2021 Nissan Titan XD Crew Cab - 6.5 ft. Bed
2021 Nissan Titan XD King Cab - 6.5 ft. Bed
2022 Nissan Titan King Cab - 6.5 ft. Bed
2022 Nissan Titan XD Crew Cab - 6.5 ft. Bed
2022 Nissan Titan XD King Cab - 6.5 ft. Bed
2023 Nissan Titan King Cab - 6.5 ft. Bed
2023 Nissan Titan XD Crew Cab - 6.5 ft. Bed
2023 Nissan Titan XD King Cab - 6.5 ft. Bed
2024 Nissan Titan King Cab - 6.5 ft. Bed
2024 Nissan Titan XD Crew Cab - 6.5 ft. Bed
2024 Nissan Titan XD King Cab - 6.5 ft. Bed
exclaimptSmall.gifProp 65 WARNING


Prop 65 WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm.  For more information go to www.P65Warnings.ca.gov. 

    • SKU
      FX51016
    • UPC/ISBN
      815138029584
  • Style
    Hard Fold Up
  • Brand
    Undercover
  • Model
    Undercover - Flex
  • Warranty
    3 Years
  • Installation Type
    Clamp On
  • Locking
    Lockable Using Tailgate handle
  • Drilling Required
    Yes (Drain tubes only)
  • Cover Side Fasten Style
    Not Applicable
  • Works With Tool Box
    No
  • Works with Bed Rails
    No
  • Hinged
    Yes
  • Bed Length
    6.5 Ft. (78.7 In.)
  • Product Type
    Tonneau Covers
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