Trusted Source for McLaren Performance
The default configuration tapers down to a 3" ball joint to allow cross-compatibility for any aftermarket or stock exhaust (see pic below). We have a few sets out to customers now and pending install. Moreover, for the full 4" benefit, we have a custom 4" ball joint to pair with our 4" exhaust for those who do not want to compromise. The exhaust will be posted soon in a separate thread.Has anyone installed these with stock exhaust?