Girodisc Alfa Romeo Giulia, Stelvio QV (CCM) Rear Replacement Rings 2014-mini-cooper-countryman-esi9875709 No drilling or permanent modifications

No drilling or permanent modifications required

The bellmouth shape is incredibly efficient at channeling the mass amounts of airflow coming through the 5" air filter's surface area and smoothly transferring it down to the intake piping with very low amounts of drag or power-robbing turbulence

The OEM rotor utilizes a pillar vane design which is horribly inefficient and heat soaks very easily with no way of effectively dissipating that heat so Chevrolet took the easy route and made the rotor extremely heavy to combat the heat

For years Integrated Engineering H-beam Rods have been an integral part of delivering the power that the highest powered turbo setups and race engine demand

The R35 uses a mass airflow sensor

Girodisc Alfa Romeo Giulia, Stelvio QV (CCM) Rear Replacement Rings 2014-mini-cooper-countryman-esi9875709 No drilling or permanent modificationsOur 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.