Q: Is this kit really proven, or just marketed as track-capable?

It was engineered and made in the USA and extensively tested at the Nurburgring, and the calipers are shared with our Pikes Peak-winning program. The size and repeatable stopping power let advanced drivers trim or remove regen for better thermal management when racing. One pro driver noted he was picking the same braking points in the Tesla as he does racing Spec Miatas. That repeatability is the point of the kit.