Here is the specification for the GReddy Power Extreme R exhaust:
Configuration/Caliber: 3-piece split / 70Φ–60Φ×2
Tail Shape: 115Φ
Replacement Part: From the second catalytic converter onwards
Material: Stainless Steel (SUS)
Compatibility:
86 (ZN6) / BRZ (ZC6)
Close Proximity Exhaust Noise: 91dB (right)・90dB (left) / 5250rpm
OEM Close Proximity Exhaust Noise: 82dB (both sides) / 5250rpm
GR86 (ZN8) / BRZ (ZD8)
Close Proximity Exhaust Noise: 85dB (right)・88dB (left) / 5250rpm
OEM Close Proximity Exhaust Noise: 82dB (both sides) / 5250rpm
Additional Information:
Compatible with all grades and suitable for both automatic and manual transmissions.