Milltek Large Bore Downpipe and Hi-Flow Sports Cat - 2023+ GR Corolla

SSXTY153 Fits with OE Secondary Cat Back Systems includes 200CPSI Catalyst in OE Secondary Cat Position - Requires Stage 2 ECU Software 1 x Turbo Downpipe 1 x Secondary Cat Bypass with 200 Cell High Flow Sport Cat  1 x Adapter for Milltek Secondary Cat Bypass to OE Secondary Catback System SSXTY154 Fits with Milltek Sport Secondary Cat Back Systems includes 200CPSI Catalyst in OE Secondary Cat Position - Requires Stage 2 ECU Software 1 x Turbo Downpipe 1 x Secondary Cat Bypass with 200 Cell High Flow Sport Cat  1 x Link Pipe for Milltek Secondary Cat Bypass to Milltek Secondary Catback