BAKFlip MX4 TS Hard Folding Cover w/ T-Slot Rails - 6 ft 4 in Bed - Without RAMBox & Multifunction Tailgate

Part #:
449223TS
SKU:
BK-449223TS
Availability:
Fargo - Check Stock – Call or Chat
Sioux Falls - Check Stock – Call or Chat
Oversized Shipping
Special Order Item (additional freight charges may apply)
UPC: 00192631051060

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Additional details

  • Integrated T-slot channels make it easy to add racks, carriers, and a variety of cargo management accessories
  • Finished with a specialty automotive coating that absorbs impacts, resists dents, scuffs, and scratches, and is fully UV-resistant to withstand years of use and abuse
  • Constructed with heavy-duty aluminum top panels on precision-engineered rails for superior structural strength
  • Smooth-functioning latch system provides secure closure and effortless operation
  • Folds forward to the cab, granting easy, full-bed access without blocking the third brake light
  • Extra-strong prop rods firmly secure the cover in open position with premium rubber bumpers to protect the cab
  • Durable rubber seals and molded end caps provide superior protection from the elements
  • Integrated drainage tubes effectively route water away from the bed (minimal drilling required on select applications)
  • Specially designed clamp system ensures an easier-than-ever installation in under an hour
  • Limited 5-year warranty

BAKFlip MX4 – Description & Key Features

  • The MX4 is BAK’s original premium hard-folding tonneau cover, made of heavy-duty aluminum panels with a high-density polymer core, finished in a matte-black, scratch- and UV‑resistant coating.

  • Features include:

    • Tri‑fold design for full bed access

    • Integrated tailgate seal (can close tailgate with cover up or down)

    • Shock‑absorbent bumpers, prop‑rod clips, upgraded latch housing components

    • Flush-mount clamp-on install (typically under 1 hr) 

  • Ideal for owners seeking a low‑profile, strong, weather‑resistant cover with good security and easy installation.

BAKFlip MX4 TS – Description & Key Features

  • The MX4 TS builds on the MX4 design, adding built‑in T‑slot side rails to support racks, crossbars, cargo carriers, tents, and more 

  • Key upgrades and features:

    • High-density polymer‑reinforced aluminum panels that are 22% stronger than the MX4 

    • Proprietary Multi‑Shield™ coating offering 11× greater surface durability

    • Patented auto‑latch locking system for enhanced security (an upgrade over MX4 Gen 2) 

    • Upgraded rubber perimeter seals, tight-fit clamps, dual-action tailgate seal and built-in water drainage for excellent water protection 

    • Supports up to 400 lbs evenly distributed on top 

    • Folds forward and props upright with dedicated bumpers, offering 100% bed access without blocking third brake light 

    • Click-in clamp installation reduces install time by ~12% versus MX4

    • Backed by a 5‑year warranty, assembled in the USA

Ideal Use Cases

  • MX4: Best for truck owners wanting:

    • A rugged, lockable hard cover

    • Easy installation

    • Budget‑friendly yet durable protection

    • Basic weather and theft resistance

  • MX4 TS: Adds appeal for users who:

    • Want to mount roof‑rack accessories directly to their tonneau

    • Need higher load capacity and improved security

    • Require superior weather sealing

    • Prefer a sleek, flush-mounted low profile with rack compatibility

Side-by-Side Comparison

FeatureBAKFlip MX4BAKFlip MX4 TS
ConstructionAluminum with polymer‑foam coreAluminum panels + polymer core, 22% stronger
FinishMatte black, UV and scratch resistanceMulti‑Shield™ coating, 11× durability
Rack compatibilityNone (rack accessories require special parts)Built‑in T‑slot rails for racks, crossbars, tents, etc.
Latching systemStandard Gen 2 latchUpgraded auto-latch for enhanced security
Water/weather sealingTailgate seal, standard clampsEnhanced seals, tight-fit clamps, integrated drainage
Weight capacity~400 lbs even load (varies by model)Up to 400 lbs evenly distributed
InstallationClamp-on, under 1 hourClick‑in clamps, ~12% faster install
Bed AccessTri‑fold, full accessSame tri‑fold design, upright prop rods, no brake light block
WarrantyVaries (often 5‑year)5‑year limited warranty

BrandBAK Industries
Length82.38 inch(es)
Width24 inch(es)
Height8.63 inch(es)
Weight71 lb(s)
UPC00192631051060

  • 2025 Ram 1500
  • 2024 Ram 1500
  • 2023 Ram 1500
  • 2022 Ram 1500
  • 2021 Ram 1500
  • 2020 Ram 1500
  • 2019 Ram 1500

WARNING: Some products may contain chemicals such as DEHP, which can cause cancer, birth defects or other reproductive harm. For more info go to www.p65warnings.ca.gov