What are you looking to get out of the larger rear sway? Is the car not rotating enough for you? Are you doing track days? Getting understeer?
There are a couple things you can try first before swapping to a larger rear sway that may cost less and get you what you are looking for.
Honestly I think the progress 24mm is a little overpriced compared to the 22mm they make. However, my 22mm has held up incredibly well for the last 4 years.
If this is the bar you are looking at and it comes with everything shown in this pic, I can't see any reason not to try it other than their poor reputation for parts holding up.
http://godspeedproject.com/products...way-bars/honda-civic-06-14-rear-sway-bar.html
That said, if it come with all that "stuff" I think it has a couple important things with it. The bushing brackets look beefy. More importantly those angled flat plate reinforcement plates are
very necessary. People with 8th gen cars were tearing the lower control arm mounting point. Those plates need to be mounted to the lower arm with any upgraded sway bar. I would not run their end links though. Lots of people have had issues with adjustable end links including high quality hotchkiss ones. Run your stock end links or get Moog end links. I would not use an adjustable end link unless I had to.
Its mostly fit and finish that godspeed does poorly with but again their price reflects that. I would hope that the finish on that bar is thick and tough. You wouldn't want the bar rusting through. The 3 adjustable stiffness holes are kind of nice but they are the same on the progress 24mm bar. Honestly if you look at both websites the pictures of the bar and the accessories are identical.a
I bet that godspeed is having their bar made at the same factory in China and it's essentially a knockoff of the progress bar. Other than the color I bet they are the same. Even the mounting point welds look the same. The bushings look the same and even the drilling on the reinforcement plates are very similar.
Progress:
Godspeed:
TL : DR
Still the main thing you need to answer is this
@DiogoDC :
What is the car doing or not doing that you think the 24mm sway will fix?