Fox Shocks for Trail Boss/AT4

[Rckstr7]

On 7/15/2021 at 9:22 AM, Josef said:

Bumping this thread.  Fox's website says that they have 2.5's available for the front but that they are not compatible with the rear.  Various retailers have 2.5's available for the rear however.  Does anyone have any insight into this?  

Josef did you find any info on the 2.5s for a TB rear? I’d like to go with fox 2.5 on all 4 locations. Not working on the rear of a TB doesn’t make sense…

[Northof51]

On 9/21/2021 at 10:38 PM, Rckstr7 said:

Josef did you find any info on the 2.5s for a TB rear? I’d like to go with fox 2.5 on all 4 locations. Not working on the rear of a TB doesn’t make sense…

Also wondering if anyone had insight as to why the fox 883-26-060 don’t fit the AT4/TB? It’s odd that they look like they’d fit on paper but fox doesn’t recommend.

[Northof51]

I emailed Fox to ask about the 2.5 rear on an AT4/TB, if anyone else is interested here’s the reply:

 

Since you are running the 883-06-157 up front which will maintain the factory ride height of the AT4 in front- no ride height increase, you can use the 883-26-060 in the rear to complete the ride dynamics upgrade.
Since the AT4 and Trailboss are already 1.5" taller in the back than the standard trim levels, the note in regards to the rears is to prevent AT4 / Trailboss owners from increasing the height in the back when using the 883-06-162 up front.

 

Edited October 6, 2021 by Northof51
Wrong part number from fox rep, corrected after checking with them

[Northof51]

Another email from Fox last night, today they put up AT4/TB 2.5 rears for a 2.5-4” lift.

 

https://www.ridefox.com/product.php?m=truck&t=shocks&partnumber=883-26-087&make=GMC&model=Sierra+1500+&year=2019&position=Rear