UnderCover FLEX Folding Hard Tonneau Cover

UnderCover FLEX Folding Hard Tonneau Cover

What are the key features of the UnderCover Flex Folding Hard Tonneau Cover?

  • Full Bed Access
  • Low Profile
  • Easy Removal
  • Secure Design
  • No Drill Install
  • Weather Resistant

Low Profile

Ultra-low profile design rests inside the bed rails allowing for a very sleek look.

Full Access

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

Prop Rods

Prop rods conveniently stow in rubber coated clips.

Easy Removal

Entire cover can be removied in seconds with no tools needed.

Secure Design

Plastic buckles and straps are included to secure the panels in the partially open position.

FRP Composite Panels

Lighter, stronger, and higher dent resistance than aluminum.

Weather Resistant

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

No Drill Install

Ultra-low profile design rests inside the bed rails allowing for a very sleek look.

Application Guide
Below is the UnderCover Flex application guide for all UnderCover Flex models. Scroll or click to find your model today.

Model Application Year
GM Models
**Aftermarket bed rail caps may need to be removed for proper installation.
Caution: Must choose With or W/O Cargo Mgmt and With or W/O Bed Caps for 2007-2013 GM applications.
FX11000 Chevy Colorado/GMC Canyon, Crew Cab, 5 Short Bed 2004-2013
FX11001 Chevy Colorado/GMC Canyon, Std/Ext Cab, 6 Short Bed 2004-2013
FX11004 Chevy Silverado/GMC Sierra 1500 Crew Cab 5.7 Short Bed With Factory Installed GM Cargo Mgmt System W/O Factory Bed Rail Caps 2007-2013
FX11005 Chevy Silverado/GMC Sierra 1500 Crew Cab 5.7 Short Bed W/O Factory Installed GM Cargo Mgmt System W/O Factory Bed Rail Caps 2007-2013
FX11006 Chevy Silverado/GMC Sierra 1500 Crew Cab 5.7 Short Bed W/O Factory Installed GM Cargo Mgmt System With Factory Bed Rail Caps 2007-2013
FX11007 Chevy Silverado/GMC Sierra 1500/2500 Std/Ext/Crew Cab 6.5 Short Bed (Also fits 2014 Silverado/Sierra 2500hd) With Factory Installed GM Cargo Mgmt System W/O Factory Bed Rail Caps 2007-2013
FX11008 Chevy Silverado/GMC Sierra 1500/2500 Std/Ext/Crew Cab 6.5 Short Bed (Also fits 2014 Silverado/Sierra 2500hd) W/O Factory Installed GM Cargo Mgmt System W/O Factory Bed Rail Caps 2007-2013
FX11009 Chevy Silverado/GMC Sierra 1500/2500 Std/Ext/Crew Cab 6.5 Short Bed (Also fits 2014 Silverado/Sierra 2500hd) W/O Factory Installed GM Cargo Mgmt System With Factory Bed Rail Caps 2007-2013
FX11012 Chevy Silverado/GMC Sierra 1500 Crew Cab 5.7 Short Bed 2004-2006
FX11013 Chevy Silverado/GMC Sierra 1500/2500 Std/Ext/Crew 6.5 Short Bed 1999-2006
FX11016 Chevy Silverado/GMC Sierra 1500 Crew Cab 5.7 Short Bed With Factory Installed GM Cargo Mgmt System With Factory Bed Rail Caps 2007-2013
FX11017 Chevy Silverado/GMC Sierra 1500/2500 Std/Ext/Crew Cab 6.5 Short Bed (Also fits 2014 Silverado/Sierra 2500hd) With Factory Installed GM Cargo Mgmt System With Factory Bed Rail Caps 2007-2013
FX11018 Chevy Silverado/GMC Sierra, Crew/Ext Cab 5.7 Short Bed 2014
FX61002 Colorado, Double Cab 5 Bed (Thailand) 2012-2013
FX61003 Colorado, Reg/Ext Cab 6 Bed (Thailand) 2012-2013
FX11019 Chevy Silverado/GMC Sierra, Std/Ext/Crew Cab, 6.5 Short Bed (Will not fit the 2014 Silverado/Sierra 2500hd) Also fits the 2015 Silverado/Sierra 2500hd 2014-2015
Model Application Year
Ford Models
**Aftermarket bed rail caps may need to be removed for proper installation.
FX21000 F150 Std/Ext Cab 6.5 Short Bed 1997-2003
FX21002 F150 Super Crew 5.5 Short Bed (Also fits Lincoln Mark LT, must remove bedrails from Lincoln) 2004-2014
FX21004 F150 Std//Ext/Crew Cab 6.5 Short Bed (Also fits Lincoln Mark LT, must remove bedrails from Lincoln) 2004-2014
FX21007 Ranger Reg/Ext Cab 6 Short Bed 1994-2011
FX21010 F250/F350 Super Duty Ext/Crew Cab 6.8 Short Bed 2008-2014
FX21012 F250/F350 Super Duty Ext/Crew Cab 6.8 Short Bed 1999-2007
FX21014 Ranger Double Cab 5 Short Bed (Thailand) 2007-2011
FX21015 Ranger T6 Double Cab 5 Short Bed (Thailand) 2012-2013
FX21016 Ranger Double Cab 5 Short Bed (Australia / NZ) 2007-2011
FX21017 Ranger T6 Reg/Ext cab 6 Short Bed (Thailand) 2012-2013
Model Application Year
Dodge Models
**Aftermarket bed rail caps may need to be removed for proper installation.
FX31000 Dakota Quad Cab 5.5 Short Bed 1999-2011
FX31001 Dakota Std/Ext Cab 6.5 Short Bed 1997-2011
FX31002 Ram Std/Ext Cab 6.5 Short Bed 1994-2001
FX31004 Ram Quad/Mega Cab 6.5 Short Bed (Does not fit Ram Box) 2002-2014
FX31006 Ram 1500 Crew Cab 5.5 Short Bed (Does not fit Ram Box) 2009-2014
Model Application Year
Toyota Models
FX41002 Tacoma Double Cab 5 Short Bed 2005-2014
FX41003 Tacoma Std/Ext/Crew Cab 6 Short Bed 2005-2014
FX41007 Tundra Crew Max 5.5 Short Bed W/O Cargo Management System 2007-2014
FX41008 Tundra Crew Max 5.5 Short Bed With Cargo Management System 2007-2014
FX41009 Tundra Double Cab 6.5 Short Bed W/O Cargo Management System 2007-2014
FX41010 Tundra Double Cab 6.5 Short Bed With Cargo Management System 2007-2014
FX41013 Hilux, Crew Cab, 5 Short Bed (Thailand) 2005-2013
Model Application Year
Mazda Models
**Aftermarket bed rail caps may need to be removed for proper installation.
FX21007 B Series 6 Short Bed 1994-1997
FX21014 BT50 Double Cab 5 Short Bed (Thailand) 2006-2010
FX21015 BT50 Double Cab 5 Short Bed (Thailand) 2011-2013
Model Application Year
Mitsubishi Models
**Aftermarket bed rail caps may need to be removed for proper installation.
FX31000 Raider Quad Cab 5.5 Short Bed 2006-2013
FX31001 Raider Ext Cab 6.5 Short Bed 2006-2013
FX91001 L200 Crew Cab 5 Short Bed (Thailand) 2006-2013
Model Application Year
Nissan Models
**Aftermarket bed rail caps may need to be removed for proper installation.
Caution: Must choose With or W/O Utili-Track for Nissan applications.
FX51003 Frontier/ Navara Crew Cab 5 Short Bed W/O Utili-Track System 2005-2014
FX51004 Frontier/ Navara Ext/Crew Cab 6 Short Bed W/O Utili-Track System 2005-2014
FX51005 Titan Crew Cab 5.5 Short Bed W/O Utili-Track System 2004-2014
FX51006 Titan King Cab 6.5 Short Bed W/O Utili-Track System 2004-2014
FX51009 Titan Crew Cab 5.5 Short Bed With Utili-Track System 2004-2014
FX51010 Titan King Cab 6.5 Short Bed With Utili-Track System 2004-2014
FX51011 Frontier/ Navara Crew Cab 5 Short Bed With Utili-Track System 2005-2014
FX51012 Frontier/ Navara Ext/Crew Cab 6 Short Bed With Utili-Track System 2005-2014
Model Application Year
Suzuki Models
**Aftermarket bed rail caps may need to be removed for proper installation.
Caution: Must choose With or W/O Utili-Track for Suzuki applications.
FX51003 Equator Crew Cab 5 Short Bed W/O Utili-Track System 2009-2013
FX51004 Equator Ext Cab 6 Short Bed W/O Utili-Track System 2009-2013
FX51011 Equator Crew Cab 5 Short Bed With Utili-Track System 2009-2013
FX51012 Equator Ext Cab 6 Short Bed With Utili-Track System 2009-2013
Model Application Year
Isuzu Models
**Aftermarket bed rail caps may need to be removed for proper installation.
FX61001 Dmax, Double Cab 5 Bed (Thailand) 2004-2011
FX61002 Dmax, Double Cab 5 Bed (Thailand) 2012
FX61003 Dmax, Reg/Ext Cab 6 Bed (Thailand) 2012-2013
Model Application Year
Volkswagen Models
**Aftermarket bed rail caps may need to be removed for proper installation.
FX71000 Amarok Crew Cab 5 Short Bed (Argentina) 2010-2013
  • UnderCover Flex FAQ 1strong>What is the warranty for my Flex Cover?
    Your Flex Cover has a three year warranty.
  • What tools will I need to install the Flex Cover?
    A 9/16 wrench is the only tool required to install the Flex Cover. Flex Covers require no drilling to attach the cover to the bed.UnderCover Flex FAQ 3Some applications may require drilling for the drain tubes.
  • Is the cover waterproof? Will I have leaks?
    The main feature of the Flex Cover is its quick access to the truck bed. The Flex Cover is water resistant but not waterproof.UnderCover Flex FAQ 4There are built-in drains to channel 99% of the water away from the bed. For a watertight bed cover we offer the UnderCover hard tonneau that may be a better alternative.
  • Will the Flex Cover work with my drop-in bed liner?
    Yes, your Flex Cover works perfectly with most under the rail drop-in bed liners (some minor trimming may be required).UnderCover Flex FAQ 5
  • I have a spray-in liner and a bed extender, will the Flex Cover work for me?
    Yes, the Flex Cover works with bed extenders and factory cargo management systems. Any additional hardware needed for the Flex Cover to mount with factory cargo management systems is included for the particular application.UnderCover Flex FAQ 6
  • What is the cover made of?
    The panels consist of a top layer of FRP (fiberglass reinforced polymer). The core material is 3lb density expanded polystyrene, and the bottom layer is FRP. The seals are EPDM.
  • How much weight can I carry on top of the Flex Cover?
    The UnderCover Flex can support 400 LBS evenly distributed.UnderCover Flex FAQ 7
  • Can I drive with the Flex Cover open?
    With the Flex Cover folded forward and secured with the included straps and buckles, or folded into the upright position with both lock rods engaged, it is safe to operate your truck at normal speeds.UnderCover Flex FAQ 8
  • Where is the Flex Cover made?
    Flex Covers are built right here in the USA!
  • What do you recommend to use to keep my Flex Cover looking new?
    UnderCover Flex FAQ 10 The FRP panels are imbedded with a UV inhibitor. Normal car wash materials will work perfectly. We offer a finishing product called Tonneau Sauce to really bring out the shine on your Flex Cover.
  • Can I open and close my tail gate with the Flex Cover closed?
    Yes, your tail gate can be opened with the Flex Cover closed. However, the rear panel of the Flex Cover must be opened before closing the tail gate to avoid damaging the rear seal.UnderCover Flex FAQ 11
Address:
5511 W. Central Ave.
Wichita, KS 67212

PHONE:(316)942-2864


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