Milltek Ford Focus MK4 ST 2.3 EcoBoost Sports Cat Downpipe | SSXFD336
Milltek Large Bore Downpipe & Hi-Flow Sports Cat – Ford Focus MK4 ST
Unlock the performance potential of your Ford Focus MK4 ST 2.3 EcoBoost with the Milltek Sport Large Bore Downpipe and Hi-Flow Sports Cat (SSXFD336).
Designed to improve exhaust gas flow, enhance engine performance and deliver a sportier exhaust note, this premium Milltek downpipe is an excellent upgrade for enthusiasts looking to take their Focus ST to the next level.
Featuring an enlarged 80mm pipe diameter and a high-flow 200 CPSI sports catalytic converter, this performance upgrade helps reduce exhaust restrictions compared with the factory system, supporting improved exhaust efficiency and performance when paired with the required Stage 2 ECU remap.
Manufactured in the UK by Milltek Sport, this system is engineered specifically for the Ford Focus MK4 ST 2.3 EcoBoost fitted with a Gasoline Particulate Filter (GPF/OPF).
Key Features & Benefits
Large Bore Performance Downpipe: 80mm pipe diameter designed to improve exhaust gas flow.
200 CPSI Hi-Flow Sports Cat: Performance-focused catalytic converter designed to reduce exhaust restriction.
Enhanced Exhaust Sound: Delivers a more pronounced, sporty exhaust character.
Performance Upgrade: Supports improved engine efficiency and performance with suitable ECU calibration.
GPF/OPF Compatibility: Designed to work with the original GPF or a compatible Milltek Sport GPF bypass configuration.
Premium Milltek Engineering: UK-manufactured performance exhaust component.
Stage 2 Ready: Ideal for vehicles undergoing a Stage 2 tuning upgrade.
Vehicle Compatibility
Ford Focus MK4 ST 2.3 EcoBoost Hatchback – 2019 onwards
Ford Focus MK4 ST 2.3 EcoBoost Estate – 2019 onwards
Vehicles originally equipped with GPF/OPF systems
Product Specifications
Manufacturer: Milltek Sport
Product Code: SSXFD336
Product Type: Large Bore Downpipe with Sports Catalyst
Pipe Diameter: 80mm
Catalyst: High-Flow 200 CPSI Sports Cat
ECU Requirements: Stage 2 ECU Remap Required
E-Marked: No
Manufacturer Classification: Race Product
Professional Installation & Remapping at OC Motorsport
At OC Motorsport in Battlesbridge, Essex, we specialise in Ford ST performance upgrades, professional installation and ECU remapping.
Looking to upgrade your Focus MK4 ST? Our team can help with performance parts, installation and suitable Stage 2 tuning solutions.
Contact OC Motorsport today to discuss your Ford Focus ST performance upgrades.
Important: Milltek identifies SSXFD336 as a race product without E-mark approval. It should not be assumed suitable for public-road use. A Stage 2 ECU remap is required, and vehicle compatibility should be confirmed before purchasing.


