Got the yellow B-M4 kit for my Neptune Blue GR86.
First impressions: looks really good in yellow, strong Poorsche vibes.
The thing is MASSIVE, the photo don't do it justice.
Doesn't fit into a spare wheel that came with my Performance Package BRZ.
Two large gaps between the caliper and the knuckle, should allow more airflow into the rotor than PP Brembos:
Changing pads is a massive pain in the neck.
You need to take the caliper off, that bad boy is heavy, and the massive "wing" at the top of the caliper makes it harder to just hang it off a metal hook or something like that.
But before you take the caliper off, you need to break the slide pins loose:
You have to use a punch and a hammer to mover the slide pins out, can't just use pliers like I could with PP Brembos.
The spring clip is very stiff, and my fingers got really tired as I was trying to pull them the first time. Didn't get much easier the second time.
Maybe I'm doing something wrong, but my initial impression is that it's a bad choice for someone who would want to swap the pads frequently.
Also, the calipers got really dirty after I changed the pads.
It was so much easier with PP Brembos!..
The kit comes with stainless steel brake lines that that have a rubber bracket to hold it against the strut:
The brake line can slide with little resistance up and down that rubber bracket, so if you're really unlucky the brake line might start rubbing against the wheel.
I guess I'll be checking the brake line position during each wheel change.
That's a strange design, tbh.
Curious if anyone was able to use PP Brembo rubber lines instead?