Private Label MFG  Power Driven FR-S/ BRZ OVERPIPES replace the most restrictive components in the factory BRZ/FRS exhaust system. With larger 2.5' diameter piping, not only does it give your car better performance, but also gives it a deeper tone.   The piping of this over-pipe is an OD (OUT DIAMETER) of 2.5/65mm Ultra light weight of ...