According to the spec sheet the stock sway bars are 23.2mm Front and 22.0mm Rear. That seems unusually large for stock sway bars. Are they hollow? I wonder how big aftermarket bars will be.
I bought the RSB for a Lexus CT200h from Ultra Racing USA and it fit perfectly. The front sway bar is actually okay since improving the RSB allows the car to understeer less which is what you want on a FWD car. It makes a big difference. The angle of the camera made them look different but they aren't other than the diameter.
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Here is a video of the install for anyone that wants to install it themselves.