Wanted to make a thread where people can drop aftermarket support that fits for 2021+ Lexus IS, there's not much I can find besides a basic axleback system, so if we can all help each other it'd be great.
Anything from performance mods to cosmetics send links down below.

 

There's a performance sub-forum, there's probably lots in there!

Also, 4is isn't a thing yet, the 2021+ IS is still the 3is

 

Welcome. I encourage you to check out the build threads in the section above the main 3IS forums. There may not be a plethora, necessarily, of aftermarket options for the 2021 and up models, but there are some things you can do.

You mention a "basic axleback" exhaust, but there are cat-back options, too. Ark Grip makes one, for just one example, and you can combine mid pipes from prior year 3IS models with newer axle-backs if you like.

 

Well, when I mean 4IS I mean 2021+ since anything prior isn't being compatible. For example, I can't find any ppe headers for 2021+ or any remote tuning.

 

All I'm saying is that there should be a separate section for 2021+ since when you go on anything 3is related its flooded usually with 2020 and prior, and you can't really find much for 2021+

 

PPE headers available for 2021+ years. Someone is actually selling them on CL marketplace for decent price.Pair that with a nice catback like Ark and add some defoulers to avoid the CEL.

As far as tunes, believe someone named "tuned by Loi" is working on a remote tune but cant confirm if true or not.

Link to headers- https://www.clublexus.com/forums/market/998348