Wilwood Hat-Dynamic BB Front 0.29in Offset 5 x 4.75 - 12 on 8.75in

This is the Wilwood Dynamic Bobbin Mount Hat, designed for front brake rotor applications. It features a unique mounting system that lets the rotor move independently from the hat as it heats up and cools down. This design is key because it takes away all the stress from the points where the rotor attaches to the hat. The result is a rotor that stays flatter and runs truer, which means your brake response and pedal feel stay consistent, even under hard use. You also won't have to worry about pad knock-back or rotor drag, and the hat itself won't get distorted from the rotor's expansion and contraction.

The hat itself is built with a 12-inch bolt circle and a 5 x 4.75-inch bolt pattern, with a 0.283-inch offset. This specific design helps manage the thermal stresses that can cause problems in traditional rotor setups. By allowing the rotor to float, it eliminates issues like warping and ensures a more reliable brake performance over time. This is a well-built component that addresses common thermal distortion issues found in many braking systems.