anyone running aftermarket rear knuckles?
 

Hello,
After eating a few CV joints on my road race FRS, I am looking at either rear subframe and diff spacers or aftermarket rear knuckles. Spacers are less expensive and do correct geometry of axles and improve roll center. The knuckles also correct geometry and roll center plus they shave ~6-7lbs of unsprung weight.

Anyonme have any experience with rear knuckles vs specers?

I have looked at the GKTech, Part Shop Max and Wisefab. The parts shop max wont fit over my RPF1 17x9 wheels.

Per SPL Parts subframe spacer kit.

Our slide-in shim system allows you to quickly raise or lower the subframe to fine-tune the roll center/anti-squat behavior to your preference. Raising the subframe will compensate roll center for a lowered car at the expense of increasing anti-squat. Lowering the subframe will decrease anti-squat at the expense of roll center.


Out of curiosity? Are you loosing different CV’s or is it the same one? What kind of power are you making? I don’t see a lot of guys loosing CV’s except for the inner driver side due to heat front he exhaust cooking the grease.