Crafted from a high-carbon cast iron alloy and precision-machined to ultra-tight tolerances, these rotor rings provide exceptional strength, reduced vibration, and consistent performance under heavy loads. Their semi-floating design allows controlled expansion and contraction during extreme temperature cycles, preventing warping and extending rotor life.

With 72 curved, directional cooling vanes, the rings maximize airflow and dissipate heat efficiently, even during steep descents, high-speed braking, or fully loaded expeditions. Paired with Powerbrake’s Max Temperature Recording (MTR) system, they allow drivers to track operating heat levels and optimize brake system performance over time.

Engineered to the same uncompromising standards as the original Stage-2 kit, these replacement rotor rings are not just service parts—they’re critical performance components. When paired with your existing aluminum bells and hardware, they restore your BBK to like-new condition, ensuring confidence, safety, and control for every mile ahead.