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448125 – BAKFlip MX4 – Fits 2015-2021 GMC Canyon/Chevrolet Colorado – 6′ Bed


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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 456 reviews
2023 Nissan Pro 4X

The BackFlip MX4 is the best solid fold cover on the market

S Bass
Very nice cover

Great looking cover. Well made and fits nice. I liked the rail clamps better on the Undercover flex I had before. Also, I’m not super excited about the cover leaning against the truck when it’s propped up, it came with some foam pads to protect the truck but there are better ways to design the props.


Great Product and service.

Andrew Johnson
Bed cover

I had one of these backflips on my 21 1500 Silverado and it was great so when I upgraded and got my 24 Silverado 3500 I ordered one for it also and I love it

James Stewart

Great fit ,had 1 broken corner piece, called in and they sent me the part in less than a week.

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