




Secure, stylish, and tough—the BAKFlip MX4 TS is built for the 2015–2020 Ford F-150 with a 6.7 ft. bed. With durable aluminum panels, a matte black finish, and full bed access, it’s the perfect blend of function and form.
Top Features
Strong aluminum construction with matte black finish
Supports up to 400 lbs. evenly distributed
Dual-action tailgate seal
Full bed access with prop rods
No-drill, clamp-on installation
Weather-resistant EPDM rubber seals
Backed by a 5-year warranty
Vehicle Fitment
2015–2020 Ford F-150
6.7 ft. bed only
Physical products may be returned within 30 days for any reason, provided that the product has not been installed and is in brand new, unused condition with the original packaging. Once a product has been installed, it is non-refundable.
Digital Products, such as MPT Tunes and HP Tuners Credits, are not covered by this.
Please see our Refund Policy or contact an MPT Expert for more information.
MPT is proud to offer free shipping on most orders over $149.
Free Shipping applies only to the contiguous United States. Shipping and handling charges will apply to all orders outside the contiguous US, with the buyer being responsible for any duty fees or taxes their home country may charge to import goods.
With Free Shipping, we will choose the best shipping method for the order. We use all major carriers, including USPS, FedEx, UPS, and DHL.
Items not stocked at our location may incur additional lead-time or charges.
Please our Shipping Policy for more information.


Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1986) is a California law that applies to all companies selling products in California. Proposition 65 requires warnings if a product contains any listed chemical present above very low levels that are known to cause cancer, birth defects or other reproductive harm. Proposition 65’s warning standards are among the most stringent in the world. Proposition 65 is not a product safety law, but rather a “right-to-know” law. Businesses are required to provide warnings to comply with Proposition 65. These warnings are required to be in place for all products offered for sale in California.
There are over 800 chemicals on the Proposition 65 list, which is administered by California's Office of Environmental Health Hazard Assessment (OEHHA), a part of the California Environmental Protection Agency. The list includes naturally occurring and man-made chemicals. Proposition 65 warnings can be seen for a wide variety of everyday consumer products, including Automotive Performance products, and warnings can be seen posted throughout California in a variety of establishments such as hotels, restaurants, automobile dealerships/repair shops, and retail stores just to name a few.
To comply with the requirements of Proposition 65, this warning is present on all products sold by MPT.
More detailed information can be found by going to:
https://www.p65warnings.ca.gov/
Upgrade your Ford F-150 with the BAKFlip MX4 TS Tonneau Cover, designed for 2015–2020 models with a 6.7 ft. bed. This premium hard folding cover combines rugged durability with sleek aesthetics, offering enhanced security and full bed access. Its matte black aluminum panels not only provide a modern look but also protect against UV damage and scratches. Whether you're hauling gear or safeguarding valuables, the MX4 TS delivers unmatched performance and style.
Key Features
Constructed with durable aluminum panels for long-lasting strength.
Sleek matte black finish resists UV rays, scratches, and dents.
Dual-action tailgate seal allows operation with the tailgate open or closed.
Integrated prop rods secure the cover in an upright position for full bed access.
No-drill installation with included clamp system for easy setup.
Enhanced EPDM rubber seals keep water out and protect cargo.
Supports up to 400 lbs. of evenly distributed weight on top.
Benefits
Provides superior cargo protection against weather and theft.
Maintains your truck's sleek profile with a low-profile design.
Quick and easy installation saves time and effort.
Backed by a 5-year warranty, ensuring peace of mind and reliable performance.
Enhances fuel efficiency by reducing aerodynamic drag.
Product Specifications
Part Number: 449327TS
Bed Length Compatibility: 6.7 ft.
Material: Aircraft-grade aluminum panels
Finish: Matte black powder coat
Weight Capacity: 400 lbs. (evenly distributed)
Installation: Clamp-on, no drilling required
Warranty: 5 years
Install Difficulty Level
Installing the BAKFlip MX4 TS is straightforward and can be completed in approximately 30 to 60 minutes using basic hand tools. The no-drill, clamp-on design simplifies the process, making it accessible even for those with minimal installation experience. For optimal ease, having an extra set of hands can be helpful when positioning the cover onto the bed rails.
Vehicle Fitment
Year: 2015–2020
Make: Ford
Model: F-150
Bed Length: 6.7 ft.
If you have any questions about this product or to report product description inaccuracies, contact the MPT Performance experts at (407) 636-7077 or by email.
MPT is proud to offer free shipping on most orders over $149.
Turnaround Times:
Special Considerations:
A Return Authorization Number is required for all returns. Please contact an MPT Expert to obtain an RA # before sending anything back to us for any reason.
MPT tuning charges and license fees are Non-Refundable. The sale is final when MPT has sent the tune file over email. This includes both new tune purchases and tune updates.
Products other than MPT tunes, digital products, and MPT decals may be returned within 30 days for any reason, provided that the product has not been installed and is in brand new, unused condition with the original packaging. Once a product has been installed it is non-refundable. We reserve the right to deny the return, should the product be received and it display signs of installation or unmentioned damage.
For vehicle programmers/tuners, the vehicle must be returned to stock if a program was installed. If a tuning device is returned and has not been returned to stock, a refund will not be issued, and your tuner will not be sent back without a shipping and handling fee.
The customer is responsible for all shipping charges incurred during the return process.
Amount Refunded:
•Returns post marked before 30 days from the date the item was received will be refunded the purchase price, minus a 25% restocking fee and the cost of shipping.
•After 30 days, all sales are Final.
•Shipping charges along with any package insurance are non-refundable. If your purchase was shipped with our Free Shipping option, the cost of the shipping will be subtracted from the total refund amount.
HP Tuners Credits are assigned to the HP Tuners product with the submitted serial number and cannot be transferred. Once you load a tune to your vehicle with the RTD, these credits are Non-Refundable.
Digital products and files that have no ability to be taken back physically, such as an SCT Tuner Unlock, are Non-Refundable.
nGauge Tune License Fee is included in your initial purchase of MPT tunes for the nGauge. This fee is factored into the price of the tunes and becomes Non-Refundable when the stock file has been emailed to MPT.
MPT Decals are Non-Refundable, once they have been received by the customer.
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2015-2020 | Ford | F-150 | King Ranch |
| 2015-2020 | Ford | F-150 | Lariat |
| 2015-2020 | Ford | F-150 | Platinum |
| 2016-2020 | Ford | F-150 | SSV |
| 2015-2020 | Ford | F-150 | XL |
| 2015-2020 | Ford | F-150 | XLT |
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MPT is great.
Had an ** tune on my 2014 f150 5.0 and put on some tires that were shorter, Ii had to change the tire size and ** stopped offering support for my tune so I switched to MPT everything has been very straightforward. I have been through a few revisions of tunes to get it dialed to my needs but my truck now shifts better, has more power, and runs smoother than it every did with my ** tune. I purchased both the adaptive octane performance trans tune and the 91 performance and both are worlds better than the **. I also like the ability to adjust the idle rpm, tires size, and gear ratio from the SCT tuner before i install the tune, this is something i could not do with **. The customer support is also much better and no bickering or hostility like there was with ** and I appreciate that and the patience of Ross at MPT very much. Would definitely recommend them for your tuning needs! God bless you all at MPT
Will post a video of the acceleration on my youtube soon @Bless-edisYeshuaHamashiach
We have two Can Am Renegade 850's in a 16' enclosed trailer that we pull with this truck. The transmission couldn't make up its mind which gear it wanted, also has larger tires on. The MPT TUNE set everything perfect. Rips awesome! Pulls trailer great! Service is absolutely amazing with all my questions. Installing cold air intake next from Morepowertuning.com
Jose at MPT not only helped me every step of the way he fine tuned my ROUSH F150 to the way it should have come off the assembly line with a historic name on the grill like ROUSH! 0-60 is 1.3 sec faster and top end never stops!!! The historic Ford 10 speed transmission “searching” has also been dealt with. Thank you MPT for making my ROUSH F150 fast
Procharged 2014 mustang 3.7, MPT did a fantastic job remote tuning. I will be back for future tunes for future mods.
I did some research on custom tunes looking for the best and that’s what I got. I got the 91prx tune and 87 tow/daily tune both without transmission tuning. On my 2022 f150 Tremor it made a night and day difference. The truck pulls hard when you floor it going 70mph down the highway or at 35mph in town. My SCT programmer showed the highest boost at 21.02. The shifting and throttle response in sport mode is so fun and tempting every time I get into the truck. I drive around in normal mode on the 91prx tune everyday and the shifting is smooth. Just make the purchase. You won’t regret it!