Warehouse Direct Prices On BAK Industries Tonneau Covers By Cutting Out The Middle Man 

448101 – BAKFlip MX4 – Fits 1988-2013 GMC Sierra/Chevrolet Silverado 1500/2500/3500 – 6′ 6″ Bed – 2014 GMC Sierra/Chevrolet Silverado 2500/3500 6′ 6″ – Bed


Call to get access to our best pricing. Place an order over the phone and get a free gift! Limited time only.

Call now

Talk to a product expert


The BAKFlip MX4 has features, including matte-finished cab corner caps, clamps, and elevator bolts for a more streamlined look and feel. Other MX4 features include an enhanced functionality with pre-molded, die-cut, shock-absorbent bumpers and secure prop rod clips.


  • Premium matte finish
  • Durable aluminum panels
  • Rated up to 400 lbs. of evenly distributed weight
  • 5-year warranty
  • Dual-action tailgate seal (not applicable to 05-15 Tacoma or 05-16 Ridgeline)
  • 100% bed access
  • Finished corner caps featuring a softer seal for a more finished appearance
  • Pre-molded and die-cut A-panel and B-side bumpers
  • Prop rod clips securely designed for durability
  • Matte-finished elevator bolts and clamps


This heavy-duty, all-season truck bed cover is designed to perform in extreme conditions. MX4’s resilient infrastructure is for everyday use, featuring upgrades to the prop rod clips, rails, elevator bolts, and the A-panel and B-side bumpers that provide enhanced functionality and a more complete matte-finish look and feel. The MX4’s solid and robust design is flush mount, and backed by an extended 5-year warranty.

NOTE: Some 8' applications may not allow for 3rd brake light visibility due to the height of cab and light location.

Customer Reviews

Based on 262 reviews
Rob M
Neat and secure

Clean appearance, secure, easily folds out of the way for bed access.
Competitive pricing, fast shipping, great customer service

dale pinheiro
Best price anywhere, wasnt sure it was real

I compared identical covers from different vendors and this was the best price. It arrived well packed and i installed myself in about 20 mins. Very well built fit clean and stays very dry inside. very satisfied with the whole deal

Bill Robbins

This is the sixth BAK cover I have owned and none have disappointed. High quality and customer service is first class.


Great product easy to install

Kenneth Mays
A great cover for my new truck

The folks at Tonneaucovered.com were exceptional! The price was great, the cover arrived in short order. The Installation of the cover couldn't be easier. I did it by myself within one hour. My truck looks great and the bed stays dry and secure.

Thank you Sean!

Getting a Tonneau Cover?

Truck Bed Covers Tip #1: Understand The Difference Between Online Prices And Local Shop Prices – get the rest of the story here: ==> https://shop.tonneaucovered.com/your-1-tonneau-tip/