The PLM Infiniti Q50/Q60 2016-2023 Full Downpipes Kit - Catted, offers impressive performance gains, delivering 50-60+ HP on 300hp models and 25-35+ HP on 400hp models. Designed for a seamless installation, these downpipes feature factory-style V-band flanges, ensuring a perfect fit with stock turbos without the need for aftermarket hardware. For the best value and reliable performance, buy the original PLM downpipes and experience the difference.3.0" mandrel bend stainless steel pipingReduced back to 2.5" at the outlet flange200-cell metallic high flow catalytic convertersCompatible with factory and most aftermarket cat-back exhaust systems2.5" mandrel bend stainless steelIncrease horsepower and torque100% TIG welded stainless steelUtilize OEM mounting tabsCNC machined v-band flangesFits OEM v-band flangesReuse factory v-band clampsJ-style O2 sensor extension adapters, allowing secondary O2 sensors to be installed in factory location, without any wiring extensionIncludes hardware & gaskets