Quote:
Originally Posted by guybo
I can see how the MCA suspension mod can maybe lower the rear end a little, but what do you do about lowering the front end?
I wouldn't go with lowering springs because 1) this car doesn't need higher spring rates 2) shorter springs means less suspension travel which negates anything good about a lower CG 3) blown dampers. But I could see moving the pickup down to lower the car and maintaining the stock suspension travel being a good thing if you can lower the front too.
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MCA traction aids have no effect on ride height. That is why they were thought of in the first place. Fitting these brackets is the only way to reduce anti squat without lowering the car.
The body end of the trailing arm is lowered. The spring perch remains at the same height.
What changed is the arc of travel of the trailing arm. It begins more horizontal which reduces anti squat leverage. That's all it does.
Your reasoning is why I fit these devices and also softer rate rear springs from the 2017 model. The 2017 factory car handles better than previous model years for this reason: more front roll resistance and less rear roll resistance. This pattern has been consistent at the factory beginning with the initial differences between the FRS and BRZ in 2013. In fact I'd be willing to bet that all the really good aftermarket spring sets up the front spring rate more than the rear % wise. Certainly fitting a stiffer front bar always improves the handling balance. Every tuner producing a better BRZ chassis goes this route.