BakFlip MX4 Drain Tubes – Essential Water Management System
Our factory-engineered drain tubes are the essential water management component for your BakFlip MX4 tonneau cover. These precision-molded tubes channel rainwater and snowmelt away from your truck bed interior, preventing pooling and protecting your cargo.
Each kit includes two drain tubes with all mounting hardware and takes less than 30 minutes to install with basic hand tools. The tubes integrate seamlessly with your MX4’s aluminum panel rails, directing water through factory-designed channels to exit points at the bed corners. We’ve designed them to handle heavy rain and car wash pressure without restricting your cover’s folding operation.
What’s included with your drain tube kit
How MX4 Drain Tubes Protect Your Truck Bed
The BakFlip MX4 tonneau cover creates a weather-resistant seal over your truck bed, but rainwater and snowmelt still need somewhere to go. Without proper drainage, water accumulates along the panel rails and can seep into your bed at stress points.
Our drain tube system solves this by capturing water at the rail channels and routing it through sealed pathways to designated exit points. The tubes attach to the underside of your MX4’s side rails, creating a continuous flow path that keeps moisture away from your cargo area. This protection is especially critical during heavy storms or when using automatic car washes.
Installation & Compatibility
Fits All MX4 Models
Our drain tubes are universal across the entire BakFlip MX4 product line. Whether you have a 2015 model or purchased your MX4 cover last month, this kit integrates with your existing rail system. The tubes accommodate short bed (5.5-6 ft), standard bed (6.5-7 ft), and long bed (8 ft) truck configurations.
Step-by-Step Installation
Installation takes approximately 30 minutes per side and requires only a Phillips screwdriver and adjustable wrench. You’ll position the drain tube along the inside of the MX4 side rail, align it with the factory drainage channels, and secure it with the provided mounting clips. The included instructions show exact placement points with detailed diagrams for popular truck models like the Ford F-150, Chevy Silverado, and Ram 1500.
Materials & Construction Quality
We manufacture these drain tubes from a proprietary UV-resistant polymer compound that maintains flexibility across temperature extremes. The material won’t crack in subzero winter conditions or become brittle under intense summer sun. This durability is essential because the tubes are constantly exposed to temperature fluctuations between your truck bed and the tonneau cover.
The mounting hardware includes stainless steel clips and fasteners that resist corrosion from road salt, mud, and chemical exposure. Each tube features molded ridges on the interior surface that maintain water flow even when the tube flexes during cover operation.
Complete Your MX4 Tonneau Cover System
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Common Questions About MX4 Drain Tubes
Installation typically takes 30 minutes or less with basic hand tools. You’ll need a Phillips screwdriver and adjustable wrench. The process involves positioning the tubes along your MX4 side rails and securing them with the included mounting clips.
No drilling or permanent modifications are required. Most truck owners complete the installation in their driveway without professional help. The included instructions provide step-by-step guidance with diagrams for popular truck models.
Yes, BakFlip MX4 drain tubes are universal across all MX4 tonneau cover installations. They’re compatible with short bed, standard bed, and long bed truck configurations from all major manufacturers including Ford, Chevy, GMC, Ram, Toyota, and Nissan.
The tubes integrate with the MX4 rail system itself, not your truck bed directly, so they work with any truck that can accommodate an MX4 cover. If you have a BakFlip MX4 installed, these drain tubes will fit.
No, you don’t need to completely remove your BakFlip MX4 cover. You’ll work with the cover in the fully open position, accessing the underside of the side rails where the tubes attach.
The installation is designed to be non-invasive. You’ll attach the tubes to existing drainage channels on the rail system without disturbing the cover’s mounting points or panel connections. This makes the job much simpler and faster than you might expect.
After installation, run water from a garden hose along the top of your closed MX4 cover. You should see water exiting at the corners of your truck bed where the drain tubes terminate. If water pools on the cover or drips into your bed, check that the tubes are properly seated in their mounting clips.
During regular use, your truck bed should remain dry after rainstorms and car washes. Inspect the exit points every few months to ensure debris hasn’t blocked the drainage path.
Yes, our drain tubes are compatible with all BakFlip MX4 model years. The rail design and drainage channel positioning have remained consistent throughout the MX4 product line, so tubes purchased today will fit covers from several years ago.
Older MX4 covers benefit significantly from drain tube installation, as early units were sometimes sold without this component. Adding tubes to an existing cover takes the same 30 minutes and uses the same installation process.
Drain tubes need minimal maintenance—just quarterly visual inspections to ensure the exit points remain clear. Leaves, mud, or ice can occasionally block the outlets at the bed corners. Simply remove any debris you find to maintain proper drainage.
Once annually, flush each tube with a garden hose to remove accumulated sediment. Avoid high-pressure washers that might dislodge the tubes from their mounts. Check that mounting clips remain tight, especially after extreme temperature changes.
No, properly installed drain tubes do not interfere with your cover’s folding operation. The tubes mount along the side rails in positions that clear all moving panels and hinges. We’ve designed them specifically to maintain the full folding functionality of your MX4.
You can still fold the cover completely open against the cab, fold it partially for bed access, or close it fully without any binding or restriction. The tubes flex slightly during cover operation but remain securely mounted and fully functional.