Girodisc Audi 356mm Rear Replacement Rings 20-0259 ✓ Includes pump basket and

✓ Includes pump basket and mounting hardware

Its simple to see that 50% of the new upgraded intercooler would be seeing no ambient air flow

9T engine with the largest volume possible piston and cylinder design to unlock fuel delivery for hybrid turbos and our Stage 1/2 Plus ECU tunes

65" internal bore capable of supporting all necessary engine power requirements on the BMW E46 M3 S54

Carbon Fibre Front Scoops: Channel ambient air efficiently into the intake system

Girodisc Audi 356mm Rear Replacement Rings 20-0259 ✓ Includes pump basket andOur replacement rings are sold in pairs and include replacement hardware. The only parts you will reuse are your existing GiroDisc hats. Please note that unless specifically noted, GiroDisc replacement rings are only designed to work with GiroDisc hats. They are not designed to be used with other brands, including hats from cars equipped with 2 piece rotors from the factory.