MBRP S4203409 3" Cat-Back Exhaust for 2016-2018 Ford Focus RS 2.3L

Vehicle Fitment

• 2016-2018 Ford Focus RS (2.3L EcoBoost, AWD)

Features

• Cat-back exhaust system engineered for enhanced flow and improved tone
• 3" mandrel-bent T-409 stainless steel tubing for corrosion resistance
• Street sound profile tuned for balanced performance drive
• Dual rear exit design for aggressive appearance
• 4.5" polished stainless steel exhaust tips included
• Lifetime manufacturer warranty on materials and workmanship
• Utilizes OEM hanger locations for installation
• Mandrel bends reduce backpressure and improve exhaust flow

Specifications

• Part Number: S4203409
• System Type: Cat-back exhaust
• Main Tubing Diameter: 3"
• Material: T-409 stainless steel
• Exit Style: Dual rear outlets
• Tip Diameter: 4.5" polished stainless
• Sound Profile: Street profile
• Fitment: 2.3L EcoBoost AWD

Included Components

• 1x 3" cat-back exhaust assembly
• 2x 4.5" polished stainless steel exhaust tips
• 1x muffler
• 1x front extension pipe
• 1x over-axle/intermediate pipe
• Clamps & installation hardware

Product Description

The MBRP S4203409 Cat-Back Exhaust System is purpose-built for the 2016-2018 Ford Focus RS with the 2.3L EcoBoost engine. Crafted from durable T-409 stainless steel with mandrel bends throughout, this system improves exhaust flow compared to the factory setup and delivers an enhanced street-profile sound that's louder and more engaging without excessive drone. Its dual rear exit design and polished 4.5" tips add a sporty, performance-oriented look to the rear of the RS.

Installation uses the vehicle's stock hangers and mounting points, though minor cutting may be required in some configurations. The street profile tuning makes this exhaust well-suited for daily driving and spirited runs alike, while the lifetime warranty on materials and workmanship gives owners confidence in long-term durability. Whether you're aiming for improved throttle response, reduced backpressure, or a more distinctive exhaust tone, the S4203409 delivers a balanced performance upgrade tailored for the Focus RS platform.