Low Cost 80/20(t-slot) crossbar DIY

Jetboy

New member
Just thought I'd share what I did for some new cross bars.

My goal is to not have a roof rack 95% of the time and have a modular system to put only what I need on when I need it. I've found that the awning on my buddy's Tacoma is pretty darn handy so I bought one. But I don't want to carry it around all the time - and frankly I can't either. My garage at work is only 6'8". That means with a 3" lift and 34" tires I've added about 4.5 inches net to the vehicle height. They start at about 72". So it's now 76.5" and the door height is 80". It's already too close for comfort...

So that's one of the reasons I did this. I also like the idea of using 80/20 rail so I can add all sorts of fixtures as necessary, and I used 4 foot wide bars so I can carry plywood on occasion when I don't have a trailer. I plan to put some end caps on them with tiedown loops.

Anyway this is pretty basic, but there's a few tricks to make it work easy and cheaply. I can remove the two cross bars in about 2 minutes with an open end wrench and an hex key bit in my cordless impact. It's not toolless, but it's about as easy as it gets otherwise. I will leave the 4 base L brackets on semi-permanently. I really miss the old style track rack on my 3rd gen. The toolless quick attach Yakima rack I had on that was really awesome.

I ordered two 48" 3 x .75 size heavy guage rail from 80/20. In the future I would just order light gauge. It's stronger than it needs to be. Both rails cost $80 delivered.

I used a length of 0.25 x 2" aluminum angle that I drilled as you can see in the images. I set up a jig in my drill press so they're all matching holes. It needs the vertical flange cut to about 1.25" or the front part will hit the roof.

Then I made matching aluminum plates to go in the slots of the OEM rails - sorry I don't have a picture of them. All they are is 1/8 thick 1" x 2" flat rectangles of aluminum that will slide down the slot in the OEM rail. I would order the right flange bolts if I were doing this again just to save the effort on those.

I milled the cross bars so the bolt heads are countersunk on top so they're totally flat still. And I used allen key machine screws. I used all stainless hardware except a couple nuts that I though I had more in my bin, so I'll have to swap out the galvanized for stainless. Here's the parts you'll need.

https://www.amazon.com/80-20-Inc-T-...TF8&qid=1521772655&sr=8-1&keywords=8020+3+.75

Here's an angle bracket that would work with some minor modifications to replace where I used my own angle brackets

https://www.amazon.com/80-20-8-Hole...rd_wg=MKAak&psc=1&refRID=H8J3DJCNGJXV27Z48FYB

That's basically all you need other than some hardware you can get at your local hardware store. I think it's about the same cost as the Toyota cross bars, but a lot more useful. I also have those, but they suck for just about everything.

When I take it off next I'm going to mark all the bolts and cut them all to length so there's no extra threads sticking out. I like a finished look. It should also help keep wind noise to a minimum. If it's bad I'll probably have to add some slot filler strips and end caps too.
 

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Been working on something similar with strut channel for a while now and just ordered the strut a few weeks ago. Wish I'd seen this and the other thread started a couple of weeks ago before ordering the strut channel as this is a lot lighter. I really like this idea and am in the same boat as you. I don't want a full replacement rack, I just use the factory rails/crossbars with a Rhino Rack steel mesh tray and really like it versatility. But the stock crossbars are so flimsy I can flex them by hand, so that led to the strut channel crossbars. I'll post a quick overview of what I'm doing once I work on it.
 
Debating the same thing

I have been debating doing the same thing to eventually mount a RTT.

I was thinking of buying corner L-Brackets and mounting on the side of the cross bars so they sit flush with the side bars.

You happen to test to see how strong the factory side rails are and if they could hold a significant amount of weight?
 
They would hold a RTT (200lbs) no problem static. I have no idea what would happen if you go jump your 4runner in the whoops with 200lbs attached up there. So it may depend on your driving. ( I do occasionally go baja style in my 4runner - so I would probably not do that with a RTT. And generally I would not recommend it because it's really hard on everything.)

Along with these:
2fMA0.png
You can attache just about anything anywhere in just a few seconds. If you've never used these before - you don't have to slide from the end. You just drop them into the slot and as you turn the bolt, they twist into place. As you unscrew and they loosen, they just pop right out. And for folks that may not be familiar with 8020 - the extrusion flanges where the hardware bolts to is actually curved slightly so when you clamp down it turns into a lock washer effect. So they do a great job of never coming loose.

If you want something to slide along the rail easier - these guys make it easy to slide your assembly into place. So for example a set of "book ends" that you'd adjust to carry some lumber or a kayak. These are what you want:
TSLOTS-Drop-In-T-Nuts-With-Ball-Bearing-TN.jpg


The only thing I would do differently is to possibly go with a lighter weight extrusion, but I like the smooth outer profile. If you want more options - get one with t slots on the edges too. I would also probably look for a metric size. Mine are SAE and I find that the metric size brackets are usually more readily available on amazon prime - so just for ease and quickness of getting that kind of stuff.

There's a billion options of brackets and quick release clamps and such you can use to make anything you want on top of the tslot rails. Just browse through catalog at 8020 inc.

Best of all - no proprietary bull shit. Mount what you want, how you want, securely, for low cost.
 
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I’m intrigued by your crossbar design. What a great idea; thanks for pointing out 80/20.
Are the bars still working out for you now that you’ve had some run time with them? I have a few questions.

1. For the rails you mentioned that you could have used a lighter gauge. Same dimensions 3.00x0.75in , just a different part number? Did you use PN 3075?
2. Did you ever find end caps for the bars?
3. Do you get water/rain intrusion into your counter sunk holes?
4. Do you get any wind noise at highway speeds?
5. Where did you find these threaded devices that go in the bar channels? Part numbers?
6. Any other changes you would make?
Thanks.
 

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Been working on something similar with strut channel for a while now and just ordered the strut a few weeks ago. Wish I'd seen this and the other thread started a couple of weeks ago before ordering the strut channel as this is a lot lighter. I really like this idea and am in the same boat as you. I don't want a full replacement rack, I just use the factory rails/crossbars with a Rhino Rack steel mesh tray and really like it versatility. But the stock crossbars are so flimsy I can flex them by hand, so that led to the strut channel crossbars. I'll post a quick overview of what I'm doing once I work on it.

I was planning to fab something up using some slim strut channel but haven't had the time. Then LFD had their sale a couple weeks ago and their sale was so good it was cheaper/easier to just order their bars.
 
I was planning to fab something up using some slim strut channel but haven't had the time. Then LFD had their sale a couple weeks ago and their sale was so good it was cheaper/easier to just order their bars.

LFD's bars look cool, but I like these strut channel bars because they hang over the edge a little and effectively give me a wider footprint for stuff. Like [MENTION=118321]Jetboy[/MENTION] has mentioned, you can carry four foot wide stuff on these. The LFD bars may be cheaper in the end like you mentioned. I think the strut channel was only like $14 each, but all the hardware I bought to attach them adds up quick.

I've been working on some cool stuff for mine lately that I'll post if I ever get time.
 
Valid points. I'm not in need of the wider area and in my own personal opinion, it looks goofy when the bars go over width. If I need to haul plywood I'm using a trailer anyways. Way easier.

The LFD bars were down to $40 each over the 4th. Even though I work for a distributor that sells strut so I get it super cheap, wasn't worth the effort over the screaming deal at LFD.

Sent from my SM-N950U1 using Tapatalk
 
I used a length of 0.25 x 2" aluminum angle that I drilled as you can see in the images. I set up a jig in my drill press so they're all matching holes. It needs the vertical flange cut to about 1.25" or the front part will hit the roof.

Then I made matching aluminum plates to go in the slots of the OEM rails - sorry I don't have a picture of them. All they are is 1/8 thick 1" x 2" flat rectangles of aluminum that will slide down the slot in the OEM rail. I would order the right flange bolts if I were doing this again just to save the effort on those.

I was looking at this idea for myself today, purely so I can mount an awning securely, and remove as needed, but with these brackets (or similar)and suitable hardware. I'll just need to measure and sort out which parts, but I think this is a great idea, and easy to remove.

https://8020.net/shop/4260-black.html#product_tabs_additional_tabbed
 
I was looking at this idea for myself today, purely so I can mount an awning securely, and remove as needed, but with these brackets (or similar)and suitable hardware. I'll just need to measure and sort out which parts, but I think this is a great idea, and easy to remove.

https://8020.net/shop/4260-black.html#product_tabs_additional_tabbed

The one issue I think you may run into with those is the bolt heads interfering with each other. Withe the right hardware it probably works great. I ended up using carriage bolts and it gets really tight fitting the wrench head on them. Ideally one with the extra length like this would give you some room if you use the second set of bolt holes. I hope this makes sense.

Like this one:
40-4285_photo.png


https://8020.net/catalog/category/view/s/shop/id/837/?cat=279&p=8
 
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These are the crossbars that SSO and Prinsu uses. It's been an interesting year buying and ideating on 80/20 stuff. I even have a separate Amazon Wishlist titled 80/20.
 
Would I be able to attach a full rack to the side rails the way you did it? I plan on building a flat, squared, 48X92 rack out of the same 8020 materials, and attach it to the existing side rails like you did. Would the slight curvature in the side rails cause a problem in sturdiness?
 

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