Description
Milltek Ford Mustang 2.3 (S550/S650 Fastback) – Large Bore Downpipe with Hi-Flow Sports Catalyst is a configurable Milltek family. Select System Type to see the exact SKU and price for each configuration.
Official Milltek fitment:
- Ford > Mustang > 2.3 EcoBoost (S550 Fastback) > 2015 to 2018
- Ford > Mustang > 2.3 EcoBoost (S650 Fastback) > 2024 and Later
Every variation is mapped to one exact Milltek SKU and the supplied Australian retail price including GST and excluding domestic freight.
Important configuration requirements
Requirements vary by the selected Milltek configuration:
- System Type: OE Cat-Back (SKU: SSXFD170): Requires a Stage 2 ECU remap/software.
- System Type: Milltek Cat-Back (SKU: SSXFD169): Requires a Stage 2 ECU remap/software.
Please select the configuration that matches the vehicle and existing exhaust. Your VIN will be checked as an additional fitment safeguard.




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