LH rotor and top hat subassem.

The left-hand brake rotor and top hat subassembly is the complete floating rotor unit for the left side of the Rush SR. It consists of the 26-vane rotor ring and the aluminum top hat (the center hat that mounts to the wheel hub), supplied together as a ready-to-install assembly.

Rush SR rotors are floating disc units, meaning the rotor ring is connected to the top hat via bobbins rather than being a single rigid piece. This design allows the rotor to expand thermally without warping and helps maintain consistent contact with the pads under hard braking. The Rush SR uses the same rotor size and spec at all four corners — order the correct LH or RH assembly for your corner.

This is an OEM replacement part. Rotors on the Rush SR typically last 100+ hours of track use under normal operating conditions. Inspect for cracking or excessive wear during regular maintenance intervals. When replacing, pair with fresh pads using the correct "2593" pad shape — note that 14.6mm thickness pads are required; 15mm pads will not fit.

Bobbins and rotor hardware are sold separately. Torque rotor bobbins to 15 ft-lb using a distorted thread lock nut.