For a neutral steering you probably need the same size bar in both the front and the rear.
Wrx rear sway bar size.
Don t bother with a larger front sway bar if your car is a daily driver.
Here is are my question s.
Stock the 2002 subaru wrx come equipped with a 17mm rear sway bar.
The standard or average amongst the wrx club seems to be 24mm in the front and 22mm in the rear.
Sway a way offers a 22mm and 24mm replacement each with three holes of adjustment.
There s a whiteline bar for just about every subaru car and driving style.
Word of caution the 24mm bars is where it starts to get noisy.
Sway a way s 2002 2007 subaru wrx rear sway bar is designed to replace the factory sway bar with an adjustable much larger diameter sway bar.
Sti rear sway bar is 20mm and front is about the same.
Stock the 2015 subaru wrx sti both come equipped with a 20mm rear sway bar.
I have 24mm front s and rears on a 14 wrx and the handling is great on corners and has neutral steering.
1 2 3 4 5 6 7 8 9 10.
Please refer to the table below for stiffness increases over the factory bar.
22mm adjustable rear sway bar 02 07 wrx 24mm adjustable rear sway bar 02 07 wrx.
Once i get the front bar upgraded then i ll up the stiffness on the rear bar and change the end links to acquire the same 90 mounting.
Stock should have slight understeer due to its configuration.
I did research and the stock front sway bar is 24 mm and the rear sway bar is 16 mm.
Sway a way s 2015 2018 subaru wrx sti rear sway bar is designed to replace the factory sway bar with an adjustable larger diameter sway bar.
This gives a nice balance while maintaining a slight understeer quality.
Whiteline sway bars are available in a plethora of different fitments and sizes.
1904 is a 24mm replacement with three holes of adjustment.
It looks like the popular rear sway bar upgrade is 19 20 mm wrx sti rear sway bar.
Wrx rear sway bar is 18mm and front is 19mm or 20mm.
When you go big on sway bars most people tend to not mess with the springs since it will start to make it really stiff.