When you start researching to try and find the best Tonneau bed covers for their truck, their primary concern is finding a cover that can protect the important cargo from the elements, and a way to secure their belongings.  BakFlip MX4 by BAK Industries offering certainly covers these requirements and more. The MX4 tonneau cover is a functional hard fold up cover with 4 panels that has all the standard features of a bed cover. 

Table of Contents


BAKFlip is a line of hard folding tonneau covers that gives you security and weather protection for small cargo while also offering you near-total bed access when you need to haul large items. BAK Industries designed and patented the popular BakFlip hard folding tonneau, which is the only hard folding truck bed cover to give you full access to the entire truck bed. While tri-fold tonneau covers are very popular, BAK has taken the category to new heights with it's range of BakFlip Quad-fold tonneau covers. While many of these covers seem similar at a glance, the differences are in the details.


  • Heavy-duty aluminum matte finish for scratch and UV-resistant
  • Light but durable Aircraft-grade aluminum
  • Upgraded injection-molded latch housing components for added durability 
  • Premium Density Foam
  • 100% Bed Access, cover flips up in seconds allowing full use of the truck bed to haul larger items.
  • Automatic latching panels : concealed under the truck bed cover. Each panel automatically locks.
  • Automatic latching panels : concealed under the truck bed cover. Each panel automatically locks.

mx4 design

The fold up design of the Bakflip MX4 allows the user partial bed access or full truck bed access that will enable you to open the cover as much or as little as you want, depending on the size of cargo you need to put inside. The integrated buckle system on the first, second and third partial fold secures the cover in place without the need for straps or bungee. It includes a safety strap in the end when fully folded, with prop rods that secure it in place for 100% full unobstructed truck bed access but at the same time also gives you visibility over the third brake light adding more security as you drive. The simple pull cable release hidden underneath the cover allows you to fold the cover from either the passenger or driver side with ease.


The Bakflip MX4 features a clamp-on installation system which requires no drilling, that allows quick and easy installation, that securely clamps into place on the railings without the need for drilling, modification or even a second set of hands. Its lightweight and ease of use allows you to install the Bakflip MX4 on your own in minutes.  Once bolted into position the cover can be unfolded into position over the truck bed. The installation is finished up by adding a drain tube that exits out the side of the truck bed. Installation doesn’t require any retrofitting and can be completed by most in less than an hour. Most customers remark that installation is simple, and few complain about complications during the process.

Security and durability

The Bakflip MX4 is made out of light but durable aircraft grade aluminum that’s durable and offers a secure fit onto the tailgate that provides great security against theft. It’s hard cover panel prevents anyone from taking a peek inside your truck bed providing a safe place to store items inside. The Bakflip MX4 is capable of holding up to 400lbs of evenly distributed weight.  While there is no lock system built into the Bakflip MX4 tonneau cover, it is designed with security in mind. The panels of the cover are difficult to deform and can withstand up to 400 lbs. of weight on them during use.

Elements & water resistance

The MX4 tonneau cover is designed to repel water and does a good job of keeping moisture out along its surface. There is an opportunity for water to leak in along the rail edges of the cover though even though there is a rubber seal system  Ultimately no truck bed cover is 100% waterproof. However, if properly installed the BAKFlip in a leader in its class at keeping the bed dry. Although gaps at the tailgate and other areas of the bed can allow minimal water in, there are also special installation techniques to become the most watertight fit possible. Local BAK Authorized Dealers experts are standing by for a professional installation for you to ensure the best possible outcome to fit your needs.

installation video


Do I have to adjust the cover every time I open the tailgate?
Can you drive with BAKFlip open?
Do I need a dealer to install my BAKFlip?
How do I lock the BakFlip if my truck does not have a tailgate lock?
Can I drive with the BAKFlip in the flipped up position?
Is it easy to remove the BAKFlip truck bed covers?
Is my new BakFlip going to be easy to install?


truck addicts 30-Day risk free Guarantee

We are so sure you that your going to love your new cover we will take the cover back for any reason you dont like the cover we'll pay for the shipping back.  

We have always strived to create a company based on client satisfaction and long-term relationships. The money-back guarantee is only a small part of the measures we take to ensure our clients receive excellent service from an honest company in a risk-free environment.