Girodisc McLaren 390mm Front Rotors 20-0005-FL 5 Audi S4 3

5 Audi S4 3

The By-Pass-Valve (BPV) gets its own hard-pipe from the cold side of the intercooler

it experiences vacuum — conditions that would normally draw crankcase vapours

just turn the golden knob clockwise on the damper to set it in race mode this action changes all four areas in the damper

Girodisc McLaren 390mm Front Rotors 20-0005-FL 5 Audi S4 3The Girodisc system is a direct replacement for the OE disc however a different brake pad with an annulus (pad swept area) of 66mm or less must be used. This is done to keep the rotor weight at a reasonable level. If we manufactured a rotor with the same annulus as the OEM CCM rotors they would be unnecessarily heavy. We can provide several different compounds in this shape bases on the customer needs. The central hat section of the disc is made from