Girodisc BMW G8X Iron Conversion Rear Replacement Rings AUDI_S4_B9 60–70ft-lbs torque increase

60–70ft-lbs torque increase

Complete Maintenance Solution: Includes a specially formulated cleaning solution and high-quality filter oil to effectively remove contaminants and restore filter performance

✓ Uses OEM mounting points

The HKS GT2 Supercharger Pro Kit is a complete bolt-on supercharger system for the Toyota 86 ZN6 and Subaru BRZ ZC6 on the FA20 engine

Girodisc BMW G8X Iron Conversion Rear Replacement Rings AUDI_S4_B9 60–70ft-lbs torque increaseNote: These rings are for the iron conversion rear rotors, part number A2 322. Our 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.