HKS Front Pipe w/High Flow Cat - Subaru BRZ ZD8/Toyota GR86 22+ 997 5" mandrel bent piping

5" mandrel bent piping

Drop-in OEM replacement — no permanent modifications required

These low-profile 12AN male press-in fittings are a direct OEM replacement for the valve cover fittings on the Nissan RB26DETT engine

or other NPT-threaded components

STI (2008-2021)

HKS Front Pipe w/High Flow Cat - Subaru BRZ ZD8/Toyota GR86 22+ 997 5" mandrel bent pipingThe HKS stainless front pipe with high flow catalyzer is designed for the Toyota GR86 (ZN8) and Subaru BRZ (ZD8). It replaces the stock front pipe with a larger diameter stainless unit that includes an upgraded catalyzer and resonator silencer, improving exhaust flow while retaining a catalytic converter for road use. In flow bench testing it achieved 30% greater flow at 150L s compared to stock even with the catalyzer in place, and the combination of