dantech1

Where exactly did you put a 4’ long shim? The box sizes are identical. The only difference is the rear seal.

OK, here a few more pics. As mentioned above, they do fit as is, but the issue is the seal wanting to sit ON TOP of the tailgate. This is fine if the tonneau cover is closed AFTER the tailgate is closed, but if you try and close the tailgate without the tonneau cover open, the seal gets crushed. My fix was to remove this seal and install a 3/4 piece of aluminum with a new seal so that it gets compressed by the tailgate. It works awesome and worth the couple hours of work. I powder coated the aluminum to match the cover, and was able to source the seal from Amazon for $20.

Give me a day or so. I'll take some detailed pics and post them here.

The top rails are not less than an inch different, they are exactly the same. As I said in my last post, the only difference is the sealing area at the tailgate.

Well, I guess the answer is they do fit, kinda! They do fit perfectly as is, but to make it perfect the rear seal needs to be modified. The second picture shows a small gap and apiece of 3/4 X 3/4 aluminum I installed on the rear edge of the cover. Now that I know it's perfect, I will powder coat the aluminum to match the cover and install the new seal. Doing this allows the power tailgate to work properly. Hopefully this post will answer any questions for anyone wanting to know if the older covers fit.

Sorry if I read your post out of context, but I’m just looking for a straight up answer. Either it fits or it doesn’t. If it doesn’t fit, I wanted to know where the fitment issue was is all .

See ya! Don’t let the door slam you in the ass on the way out. for all others, thank you for the great information. Much appreciated.

Some of us are handy , others not so much so. If that pair of jeans is a size 12, common sense will tell me that There’s enough material there to make a size 10. as far as a tonneau cover, it’s the same thing. If I can build a car from scratch, I’m sure I can modify a simple tonneau cover in an afternoon and save myself $1K.

Thank-you

Thanks for that info. That really helped me.

Can’t recall the brand, but they listed for around $1300 a couple years ago. Local business has a couple new old stock left they want to get of.

Thanks for all the replies; I’m getting the AT4 with the 6.5 ft box. Ive already done quite a bit of research, and this is some of the measurements I got 2007 64x62x77.5 2016 64x62x79 2019 63.5x62x77 the reason I’m looking into this is because I can get brand new hard tri-fold covers for around $300. The problem is that all these are for older models. If I had to buy new from Amazon, then there’s no savings in using an older cover because the prices are the same. I’m located in Canada where prices are insane, and I can save over $1000 if I can figure this out. I own a fab shop, so modifying a cover will be easy. Might be fun too !!!

I know they are different, obviously. im trying to find out where the difference is. Are the new truck rails wider apart that the old style? What about length? what I’m getting at, is that if the previous generation of trucks use a larger tonneau cover, then they could easily be modified to make them smaller to fit the new trucks. Flush mount hard tonneau covers are made from panels and aluminum extrusions fastened together. It’s quite easy to disassemble, cut to size the reassemble.

I'm leasing a 2020 AT4 for only 2 years, and don't want to waste $1K+ for a hard tri-folding tonneau cover. I can get a brand new 2018 cover for around $300, but it's for the previous body style. I've done measurements on both trucks, and both are close. What is the fitment issue? Is it because of the Multi-pro tailgate? I don't mind modifying or fabricating something to get it to fit. Thanks for any reply. Dan