Girodisc Audi B7 RS4 380mm Front Rotors, incl. caliper spacers 20-0288 The upper flange surface is

The upper flange surface is O-ringed for a perfect seal to either a stock or aftermarket plenum

developed as a component of the HKS GT570 and GT600 racing packages

Captures crankcase vapors and oil mist before entering intake

Increased Clutch Pressure

Girodisc Audi B7 RS4 380mm Front Rotors, incl. caliper spacers 20-0288 The upper flange surface isThe Girodisc system is a direct replacement for the OE disc with the addition of our provided caliper spacers. Our rotor is slightly larger than the OEM rotor at 380mm versus 365mm providing greater braking force and cooling capacity. The Girodisc front rotors are approx 22. 6 lbs vs. 25. 5 lbs for the stock units. This reduction in rotational and unsprung weight allows for quicker acceleration and suspension response. The central hat section of our