The 2014-2018 Silverado and Sierra 1500 pull double duty as work truck and weekend hauler, and the MX4 TS lets the 5'8" bed do both at once. Its factory-integrated T-slot rails accept cross bars, a bed rack, and kayak or bike carriers, so you can haul long gear up top while tools and cargo stay locked and dry under the hard aluminum fold. A Multi-Shield coating makes the matte finish up to 11X more scratch resistant, and the clamp-on rails go on this K2-platform half-ton in under 30 minutes with no drilling.
What's Included:
(1) BAKFlip MX4 TS folding cover assembly
(2) Clamp-on mounting rails
(1) Tailgate seal
(1) Hardware and clamp kit
(1) Installation guide
Features
Integrated T-Slot Rails, Rack-Ready The MX4 TS carries factory-integrated T-slot rails down both sides, so the cover comes rack-ready out of the box. Drop in cross bars, cargo holders, kayak and bike mounts, tie-downs, or a bed rack and haul up top while the bed stays covered and locked underneath. Racks and accessories are sold separately.
Heavy-Duty Aluminum, 22 Percent Stronger Redesigned aluminum top panels ride over high-density polymer cores for a rigid, secure deck that is about 22 percent stronger than the original MX4, resisting cuts, prying, and dents while staying light enough to fold with one hand.
Multi-Shield Coating, 11X More Scratch Resistant A specialty Multi-Shield automotive coating makes the matte-black surface up to 11X more durable against scratches and scuffs, so the low-profile cover keeps its clean look through years of daily use.
100% Bed Access in Seconds The panels fold flush against the cab, opening the entire bed for pallets, appliances, or a dirt bike, then fold back and auto-latch closed. It is the only hard fold that keeps your third brake light visible in every position.
Weathertight Sealing and Drainage Re-engineered perimeter seals and tight-fit clamps block rain, dust, and spray edge to edge, and an integrated drainage system channels water off the cover and out of the bed so cargo stays dry.
Automatic Latching Security Re-engineered panels latch down automatically the moment the cover closes, with improved resistance to forced entry over the Gen 2 design. With the tailgate shut and locked, the bed cannot be opened from outside.
No-Drill Click-In Install, 400 lb, Made in the USA The all-new click-in clamps cut install time by about 12 percent and need no drilling, so the rails go on in under 30 minutes with hand tools. The closed cover holds 400 lb evenly distributed and is assembled in the USA (Missouri) with a 5-year warranty and US-based support.
MX4 Line-Up Comparison
How the BAKFlip MX4 TS (Gen 3) compares within its BAK family:
Feature
BAKFlip MX4 (Gen 3)
★ BAKFlip MX4 TS (Gen 3)
BAKFlip MX4 EZ-Lift
Core Feature
The original benchmark
Rack-ready versatility
3X easier to lift, most secure MX4
Platform
Gen 3
Gen 3
Gen 3
Security Level
Enhanced
Enhanced
Maximum protection
EZ-Lift System
No
No
Yes
Lift Effort
Standard
Standard
Lightest (10.5 lbs)
Built-In Rack Compatibility
No
Yes
No
Durability
Premium-grade
Premium-grade + Multishield coating
Premium-grade
Weather Protection
Advanced
Advanced
Advanced
100% Full Bed Access
Yes
Yes
Yes
3rd Brake Light Visibility
Yes
Yes
Yes
Weight Capacity
400 lbs
400 lbs
400 lbs
Temperature Rating
Tested -40 to 180 F, up to 95% humidity
Tested -40 to 180 F, up to 95% humidity
Tested -40 to 180 F, up to 95% humidity
Installation
Click-in clamps, DIY, under 30 min
Click-in clamps, DIY, under 30 min
Click-in clamps, DIY, under 30 min
Warranty
5 years
5 years
5 years
Fitment & Compatibility
Years
Make
Model
Bed
Fit
2014-2018
Chevrolet/GMC
Silverado / Sierra 1500
5'8"
✓ Yes, direct clamp-on fit with integrated T-slot rails
GM CarbonPro composite bed
✗ No, order the CarbonPro-specific cover
Fit guidance: Fits the 2014-2018 Chevrolet Silverado & GMC Sierra 1500 with the 5'8" (69") bed. This is BAK/RealTruck's marketed bed length; labels vary by source and tape-measure figures differ by where you measure, so confirm your exact bed and configuration if you are unsure. Not compatible with beds outside the listed length.
Specifications
Cover type: BAKFlip MX4 TS hard folding (tri-fold) tonneau cover with integrated T-slot rails
Material: Heavy-duty aluminum top panels with high-density polymer cores, aluminum side rails and frame
Finish: Textured matte black with Multi-Shield coating (up to 11X more scratch resistant)
Rack compatibility: Integrated T-slot rails accept cross bars, bed racks, cargo holders, and tie-downs (sold separately)
Bed length: 5'8" (69")
Bed access: 100%, folds flush against the cab
Weight capacity: 400 lb evenly distributed on the closed cover
Sealing: EPDM perimeter seals, tight-fit clamps, integrated water drainage
Security: Automatic latching panels, locks with the tailgate closed
Drilling required: No, clamp-on rails
Install time: Under 30 minutes, one person
Assembled in: USA (Missouri)
Warranty: 5-year limited
Installation
Type: Bolt-on, clamp-in, no drilling · Time: Under 30 minutes · Tools: Basic hand tools · Difficulty: One-person, DIY-friendly
The all-new click-in clamps attach to your factory bed rails with no cutting, trimming, or drilling. Set the two rails on the bed rails and level them, lower the folded cover into place and connect the click-in clamps, then close the tailgate and adjust the perimeter and tailgate seals. Most installs finish in under 30 minutes with basic hand tools. Watch the model-specific install video above and follow the printed iSheet for clamp placement and torque.
Watch the model-specific installation walkthrough:
Resources
Everything you need for your BAKFlip MX4 TS Hard Folding Tonneau Cover for 2014-2018 Chevrolet Silverado & GMC Sierra 1500, in one place.
Warranty. 5-Year Limited Warranty from BAK / RealTruck against defects in materials and workmanship, backed by US-based product experts. It does not cover accident damage, neglect, or improper installation.
Free shipping. This item ships free to the lower 48 states. Because it is an oversized item, it ships by freight and typically arrives in 3 to 7 business days.
Inspect on delivery. Please inspect the packaging before signing. If you see any damage, note it on the delivery receipt and contact us right away, and we will make it right.
About BAK Industries
BAK Industries has engineered premium truck bed covers in the USA for decades and is a flagship tonneau brand of RealTruck, one of the largest truck-accessory manufacturers in North America. Its hard-folding BAKFlip and retractable Revolver lines set the benchmark for the category, pairing heavy-duty aluminum construction with a low-profile, weathertight design.
Every BAK cover is built for real-world truck use: no-drill, clamp-on installation that mounts in about 30 minutes, full bed access when folded or rolled back, and reinforced latching that keeps cargo secure and dry. The lineup runs from the value-focused BAKFlip MX4 and G2, to the flagship FRP-panel F1 and FiberMax, to the industrial Revolver X2 and X4s roll-ups, covering nearly every popular truck and bed length.
Backed by US-based product support and a multi-year manufacturer warranty, a BAK cover is a buy-it-once upgrade that protects tools, cargo, and gear while giving a truck a cleaner, more finished look.
Authorized BAK Industries dealer. Prestige Truck is an authorized dealer of BAK Industries, so every tonneau cover and accessory you buy is 100% genuine and factory-new, covered by the full BAK Industries manufacturer warranty, and backed by our own US-based support team.
MX4 TS Rail System At SEMA
Shot at SEMA, this official RealTruck clip focuses on the MX4 TS integrated T-slot rail system, showing how cross bars, bed racks, and cargo accessories mount directly to the cover so you can carry gear up top while the bed stays covered and locked underneath.
Because it is filmed on a show floor with the accessories already fitted, it is the clearest look at what the rails are actually for: the T-slot channel runs the length of each side, and hardware slides in and clamps down wherever you need it rather than at fixed points.
One Motion Opens The Whole Bed
Drop the tailgate, release the rear latches, and fold the panels forward against the cab for full access in seconds.
The panels fold flush against the cab, opening the entire bed for pallets, appliances, or a dirt bike, then fold back and auto-latch closed. It is the only hard fold that keeps your third brake light visible in every position.
Sealed Against The Weather
Edge-to-edge seals and tight-fit clamps shed rain and spray so your cargo stays dry underneath.
Re-engineered perimeter seals and tight-fit clamps block rain, dust, and spray edge to edge, and an integrated drainage system channels water off the cover and out of the bed so cargo stays dry.
Frequently Asked Questions
Straight answers on specs, fit and support
Will the MX4 TS fit my 2014 Chevrolet Silverado & GMC Sierra 1500 with the 5'8" bed?
This cover is built specifically for the 2014-2018 Chevrolet Silverado & GMC Sierra 1500 with the 5'8" bed, so it is a direct clamp-on fit. Bed lengths are marketed a few different ways and tape-measure figures vary by where you measure, so if you are between sizes, measure your bed and match it to the 5'8" listing before ordering.
Can I mount a rack or cross bars on this cover?
Yes, that is the point of the TS. It has factory-integrated T-slot rails down both sides, so it comes rack-ready. You can add cross bars, a bed rack, cargo holders, kayak or bike mounts, and tie-downs (sold separately) and still fold the cover for full bed access underneath.
Does it fit the GM CarbonPro composite bed?
No. This cover is for the standard steel bed. If your Silverado or Sierra has the CarbonPro composite bed, order the CarbonPro-specific cover instead.
Is the cover waterproof, or will water get into the bed?
It is built to be weathertight rather than fully submersible. EPDM perimeter seals and tight-fit clamps block rain and car-wash spray, and an integrated drainage system routes water off the cover and out through drain tubes. Like all folding covers it is water-resistant, not waterproof, but it keeps rain and spray off your cargo in normal use.
Do I need to drill into my truck to install it?
No. The MX4 TS clamps onto your factory bed rails with the included clamp-on rails, with no cutting, trimming, or drilling, and it installs in about 30 minutes with basic hand tools.
How much weight can I set on the closed cover?
It is rated for 400 lb evenly distributed across the closed panels, which is fine for gear, a cooler, or a sheet of plywood laid flat. It is not meant for concentrated point loads.
Mark K.
Look is great. 100 lbs
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I never knew how much I needed this
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Better then expected.
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The toolbox is nice. I think Ill get a lot of years of service out of it. I like how the lid opens and the tie downs are a nice touch. It seems to be well built. And tough. Im pleased with my purchase and would buy another one.
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