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Discussion Starter · #1 ·
This is an installation and review of the Undercover SE one-piece hinged tonneua. It is made out of black ABS plastic and comes with everything you need to install it.

https://undercoverinfo.com/undercover-se

I installed this tonneau and rack system per the instructions. I am including them in this writeup. I will also include my commentary and experiences. Although I would consider this a relatively easy install, there are one particular step you don't want to screw up - drilling holes in the cover. To borrow a familiar adage... measure twice, drill once. Also, I highly recommend two people when handling the tonneau. The weight isn't bad, but the size gets a little unwieldy. The hinges have some force to them and can be a little tricky. You need two people to control the cover so you don't damage or scratch anything. And one disclaimer... I am not responsible for your errors. You can always seek the advice of a professional installer, which I am not.

The tonneua cover and all hardware cost me $809.10 from tonneaucoverswarehouse.com. It was on sale for $899.00, I got 10% discount with SAVE10TCW1 code, and free shipping. I got it in 1 week.

In addition, I installed Vantech J1000 rack system from Amazon. I got the 59" light duty in black. The bars are anodized aluminum and the risers are painted steel.
https://www.amazon.com/gp/product/B004TDG3R8/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1

The rack system cost me $196.95 for 2 racks (they come in pairs). These are MUCH cheaper than Yakima, Thule, etc. and good quality imo.

I added some small items which I'll cover later:
- weatherstripping
- o rings
- gaskets material

Also, although not explicitly stated in the tonneau warranty, I'm pretty sure that installing the racks will void the cover warranty. Maybe not for the hinges, hardware, etc, though.

The pictures may look a little deceiving, but the racks DO NOT extend beyond the INSIDE edge of the bed. You can't see them from the front and they are not in the side slip stream.

There are two oh-by-the-ways:
1. You lose some (but acceptable imo) view out the rear window
2. You lose some (but acceptable again) rear trunk opening
I will explain these later.

All that being said - it came out great and I would do it again! :grin:

I've attached pictures of the final product.
 

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Discussion Starter · #2 ·
It comes in a big box with all the hardware. In addition to the tonneau hardware, it also come with a rail system that the tonneau hardware mounts to. I was a little concerned at the begining with all the parts (which can mean more stuff to break or come lose), but I was pleasantly surprised at how sturdy it was when it was all done.

You have to remove the upper tie downs, install brackets, the you can reinstall tie downs. I inverted the front hook to move it away from the hinge and I also added some corrosion inhibitor on the tie down bolts.
 

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Discussion Starter · #4 ·
Here are some pictures of the entire system installed. The cover hardware clamps to the rail. It is surprisingly solid.

A little tricking to get on... make sure you use 2 people!

Then twist the start handle to screw it in place. The gas shock just pops into place and has a red lever to release the bottom.

Although it is a one-piece design and you are limited to the height of the bed, it is really easy to remove.

Unscrew the start handle and pop the red lever. Then lift off and you are done.
 

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Discussion Starter · #5 ·
There is a rubber front seal, but it is not sufficient to make water tight. I bought some rubber foam weather seal from Home Depot. I used this to fill the small gaps, along the entire from end, and also along the entire inner edge of the cap to it couldn't rub the paint if it got misaligned.

I adjusted the front hinge forward to get the cover within 3/8" of the back of cab.

I also adjusted the lock striker plates down to the lowest setting to help remove the up and down slack in the lock rods.
 

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Discussion Starter · #6 ·
Now the fun part, installing the racks. Getting ready to drill holes in a perfectly good and brand new tonneau cover.

I bought some #8 o rings from Home Depot and some gasket material to make my own gaskets.

This is my opinion, but DO NOT try to align the holes from the outside, do this from the INSIDE based on the inside cover pattern. Also, I did this based on getting the bars 30" apart so I can mount my luggage carrier on it. It also looks symmetrical, at least to me.

The installed rack mounting brackets inside the rectangular indents INSIDE of the gaskets (inside the bed). There are two indents between them. IMO, this ended up being a great setup for this system.

I marked the pilot holed from the INSIDE and centered it in the indent. I used a small drill bit jut to guide the larger 5/16" final bit.

Once I drilled all the pilot holes, a shut the cover and drilled the final hole from the OUTSIDE.

This worked out great in my opinion. The holes were perfect and no rubbing or obstruction of any kind.

The rails are roughly 30 inches apart, which is exactly what I was shooting for because of my roof carrier accessory.
 

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Discussion Starter · #7 ·
The screws are a little tricking to get into the rack risers, but they will go in. You have to angle them and twist them in place.

You can see I used gaskets that I made from the bracket as a stencil. Also, the bracket makes a good stencil for the cover holes.

There will be a small angle difference in the bracket and the bar. I think this is a good thing. I opted not to try to bend the brackets down. Instead, let the aluminum rack bar bend. It is designed to do that and not will have a slight preloaded upward bend for the load. The bar is actually the most flexible, followed by the cover which is relatively stiff, and the bracket which is very stiff steel.

Then tighten it all down and install the finish parts.
 

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Discussion Starter · #9 ·
And here are the results of a 2 minute leak test. Remember, I added weather stripping to the front. This would have not have sealed without it for certain. The cover does come with a front gasket but it is not water tight. My driveway it sloped down and I pointed down hill. So all the water ran to the front. This is really the only place it can leak. The racks have o rings and inside and outside gaskets... they are water tight. Watch the video for results.

 

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Discussion Starter · #10 ·
What's next... road trip of course. Next weekend I'm headed to a soccer tournament. I will have it fully loaded with how I intend to use it. Will be traveling 3 hours on highway. I will report back with how it goes.
 

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Discussion Starter · #11 · (Edited)
To address two of the issues I mention before.

1. Rear view. You do lose some rear view with the setup. For my height and seating position, I could see the tailgait WITHOUT the cover installed. I will refer to the defroster lines as a reference. There are 10 window rectangles seperated by the rear view defroster lines. Even with no cover, I lose 1 rectangle due to the tailgate. With the cover only (no rack), I lose a total of 2 rectangles due to the spoiler lip. And with the racks installed, I lose another rectange plus a little more from the racks. So, when it is all done with the entire setup, I am losing the bottom 1/3 of the rear pane. If I raise my neck, I can actually see a gap between the bars. For me, this is acceptable.

2. Rear truck opening. I didn't measure this before, but I did notice that the trunk now hits the rear cover mount. I don't know the exact angle, but you can see it in the picture. For me, this is fine, but I thought I'd point it out.
 

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Discussion Starter · #12 · (Edited)
Test fit the cargo carrier. This position will work fine. I can open the cover about 1/3 way. If I move it back I will have some weight distribution issues. I plan on keeping the light stuff to the rear... foam mats, sleeping bags, etc. Mostly clothing is going in here.
 

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Discussion Starter · #14 ·
Great write up and thank you for tons of information,
Are you able to open the undercover with the x-cargo on it ?
Thanks. As you see it, I can open the tonneau about 1/3 of the way total open. The cargo carrier opens fully no problem. I can shift the car carrier back one hole and would be able to open the tonneau more. This was just a test fitting and I'm leaning towards shifting it back. Next weekend will be the real test on my trip.

I already had this carrier and I'm making it work, but if I was going to buy a carrier specifically for this I would consider a slightly smaller size. This one is pretty big and I don't think Ive ever filled it totally.

Sent from my SM-G970U using Tapatalk
 

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Test fit the cargo carrier. This position will work fine. I can open the cover about 1/3 way. If I move it back I will have some weight distribution issues. I plan on keeping the light stuff to the rear... foam mats, sleeping bags, etc. Mostly clothing is going in here.
Great write-up and mod - thanks for posting! Also, thanks for having the guts to drill into a brand new cover!

As an aside, you might try turning your luggage carrier around for the second leg of your trip. Although you might have a less aerodynamic area pushing into the wind, it might be more than offset by less drag behind the vehicle, or maybe not. Would be curious to see MPG with it mounted both ways.
 

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Discussion Starter · #18 ·
Great write-up and mod - thanks for posting! Also, thanks for having the guts to drill into a brand new cover!



As an aside, you might try turning your luggage carrier around for the second leg of your trip. Although you might have a less aerodynamic area pushing into the wind, it might be more than offset by less drag behind the vehicle, or maybe not. Would be curious to see MPG with it mounted both ways.
I'm not gonna lie.... it is a little nerve-wracking drilling the holes. I just used the support plates as templates and marked them on painters tape. The ABS is really easy to drill and makes for clean holes.

Good idea about flipping it around! I'm going to Tennessee with it this weekend. I will try it one way and flip it coming back. I will post the MPG results. Thanks.

Sent from my SM-G970U using Tapatalk
 

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Discussion Starter · #20 ·
Does the Vantech rack hit the rear window stopping the tonneau cover from fully opening?

I have the similar undercover tonneau on my 2019.
No it doesn't. Here is a picture with a full open cover.

It all depends on what you put up there. At some point I just realized that it is a 5 foot bed and I have to be realistic. There are going to be limits that what I can put up there.

But I do have a bike rack also which Im getting ready to try out.


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