HKS LEGAMAX EXHAUST SYSTEM: 2022 SUBARU BRZ/TOYOTA GR8632018 AF018 Designed to be comfortable for daily use, this system features a deep tone when you hit the gas. The large 124mm diameter tips are designed to fit the stock bumper and adds the perfect sporty look to your vehicle. The diameter of the pipes were selected to reduce exhaust pressure and provide higher torque and response. The result is an exciting sound with no drone noise, making for perfect daily use while also delivering an exciting sound