Girodisc 2-Piece Brake Rotors

Girodisc lists its two-piece discs one corner at a time, so each listing is a single left or right disc and an axle needs one of each. Complete assemblies, with part numbers starting A1 or A2, bolt to the car in place of the original disc and work with the existing calipers. Replacement rings, numbered D1 or D2, renew the friction part of a Girodisc assembly you already run, and they come with new drive pins.

Those replacement parts fit Girodisc hats only. They are not made for other brands’ hats or for a car’s factory two-piece discs, so if your car left the factory with two-piece discs, start with a complete assembly.

Almost every ring is curved-slotted, with a small number straight-slotted. Vehicle fitment is attached mainly to the assemblies: Porsche has the most, followed by Ferrari, Audi, Mercedes-Benz and Chevrolet, then Lamborghini, Dodge, Ford, BMW and McLaren. The Porsche Cayman and Boxster (982), the 911 of the 991 generation and the Lamborghini Gallardo head the model list. When you order a replacement ring, match the part number on the assembly fitted to your car.