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Discussion Starter #1 (Edited)
As promised (in the crossbar thread), I installed and tested the TAC Truck Accessories Cross Bars that you can get on Amazon for $57.TAC Truck Accessories Cross Bars

The XT5 crossbars that some people were using looked cramped to me, needed modding, and still cost over $150. With these, you just need to enlarge four of the pre-drilled holes and because they're "universal" bars they can still be used on other cars too.



Here's a photo write up:

Here are the bars intact with the locking key.


Slide off the post and pull out the rubber insert.


With a 1/4" bit, enlarge the center hole on the bottom. This is where it'll bolt to the pre-drilled roof rail mounts. I propped the post on a 2x4 before drilling.


After enlarging the hole, reinsert the rubber insert and drill through it again. After that, your bolt should fit perfectly. I had a bunch of bolts in my motorcycle bolt kit but otherwise you'll need a trip to the hardware store (IIRC they're 6 mm).


This is what the post looks like attached.


Here's the inside with the bolt attached


Because of the gap, I cut out some foam inserts from a spare kayak block. Shoving them into the gap also makes sure the crossbars don't twist (since they're only being held with a single bolt).


Here's the finished product.


So far I've tested it over the last three days, putting over 200 miles with speeds up to 75 mph. My 130-mile commute went from 2.7-3.0mi/kwh to 2.6-2.7. Other than that, the bars held up just fine. Slight whistling at 30-35 mph if you have your windows down. Otherwise, windows up, you'll hear wind/whistling with crosswinds or if you're going over 70 mph. I'll post another update when the weather clears up and I can test a roof box or kayaks. Enjoy!
 

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Discussion Starter #3
No load test yet because it's been raining too much. Hopefully I can update after this weekend with a loaded/unloaded roof box.

The clamps are plastic but (at least bolted down) they're solidly attached - I tried to force them off the rails and stopped when the roof rails themselves looked like they would come off.
 

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That's quite a deal. I may have to ask Santa for a pair!

You could also use a security type screw on the inside where it attaches to the rails?
 

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Tried to order these on Amazon.com, but TAC won’t ship to Canada. Any suggestions?
It’s not much of a drive across to Niagara Falls. Order them & list your shipping address as the UPS store on military rd, Niagara Falls.
I do that fairly often with auto parts, or anything that results in ridiculously high rates to get to Canada.
Be aware UpS will charge $5, & $1/day for storage. Be sure to list a phone #, UPS will call when item arrives, so you don’t go down for nothing. Declare item on return, they never bothered with anything up to $100 previously, & the limit went higher under NAFTA 2.
 

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Discussion Starter #8
That's quite a deal. I may have to ask Santa for a pair!

You could also use a security type screw on the inside where it attaches to the rails?
It actually worked out better for me to use my motorcycle bolts since I can use the same hex key to remove everything. I never keep crossbars on when I'm done using them, though, so I don't generally worry about security.

Even if someone gets the rail bolt off, though, it would take some force to yank it off without removing the inside bolt (which is locked). So it'd be pretty obvious to people passing by and it'd still be locked and useless to the thief.
 

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Anyone know how long the 6mm bolts should be?
 

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Anyone know how long the 6mm bolts should be?

For my custom attachment points (that were simple perforated angle iron), I went to Home Depot and got three different sizes of stainless 6mm bolts, based on guessing. I took back the ones that didn't fit right. I think I ended up with 3/4" or so. The threads are counter-sunk a bit, so you do need some depth.

Works well if you have an HD within bicycle distance, have time, and want the exercise.:D
 

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For these TAC rails, is the bolting step really needed? I'm thinking that these might be useful for occasional carrying of 2x4s from Home Depot, but wouldn't want to leave them on all the time given the amount of noise they seem to have.
 

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And here's the $15 version, if you have a friend with a 3D printer: EMT Roof Rack Tower - Fits Chevy Bolt and other GM Cars by zannman
Even looks like Chevy OEM.
I went ahead and printed these in PETG on an Ender 3 with 20% infill. I’m halfway done because this part takes roughly 8 hours to print using FDM. I cut some 3/4” EMT conduit for the bar.

They aren’t bad, but I think that there should be a bit more material on the bottom part and that they should rest on the rails instead of floating. I might fill, sand and paint in an OEM color, but they are probably okay in just shiny black.

I’m going to get some rubber spacers to put along the bottom to improve the support.

29201
 

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Hey, this may be the wrong place to ask, but does anyone by chance know if there is a way to add the siderails to a 2019 LT that lacks them?
 

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Discussion Starter #16
For these TAC rails, is the bolting step really needed? I'm thinking that these might be useful for occasional carrying of 2x4s from Home Depot, but wouldn't want to leave them on all the time given the amount of noise they seem to have.
Sorry I've been MIA from the forums recently. I wouldn't trust them without the bolt since the hugging mechanism doesn't seem the most secure. Plus the rails on the bolt were designed to be bolted in (no pun intended).
 
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