When the mazdaspeed3 is in a corner that is hard enough, the rear end will start to float. this type over oversteer is difficult to predict and manage as its caused by alignment shifts in the rear suspension. By bracing the spring perches with this trunk brace, your mazdaspeed3 will be significantly more predictable.
-1.5” tube steel construction
-Billet cnc threaded bungs
-Fits neatly against the back seat allowing near full trunk capacity and full seat functionality.
-2004-2013 Mazda3/Mazdaspeed3(hatch only)
All I can say is that I was surprised on how much of a difference this made in terms of handling. Before I got this brace, the rear end of my speed always felt sloppy and was very hard to control during hard cornering. After installing this brace, and taking the speed for a spin in the twisties, all I can say is wow. I should've gotten this brace sooner, but I'm glad I got it now.
Fits like a glove and does a lot more for handling than I expected to be honest! Worth the money and looks sweet
Finally, I can feel what the back end is doing! After coilovers and a bit of other mid and front bracing, the back float was killing me. After installing this—which took all of 5 minutes, so easy!—the back is talking to me again. Also slightly slidable again (in a good way).
Have not had a chance to drive with it installed but installation was straightforward.