XForce VAREX 3″ Cat-Back Exhaust Ford Focus RS Mk3 2016-2018 | ESFRS16VKCS

Upgrade the sound and character of your Ford Focus RS Mk3 with the XForce VAREX 3″ Valved Cat-Back Exhaust System.

Designed specifically for the 2016–2018 Ford Focus RS 2.3 EcoBoost AWD, the XForce ESFRS16VKCS combines free-flowing 304-grade stainless steel pipework with XForce’s patented VAREX electronically controlled valved rear muffler, allowing the exhaust sound to be adjusted to suit different driving conditions.

Whether you want a more refined exhaust note for everyday driving or a more aggressive sound when enjoying your Focus RS, the VAREX system offers considerably more flexibility than a conventional fixed-sound performance exhaust.

Key Features

• Genuine XForce VAREX performance exhaust system
• Direct-fit cat-back system
• Designed for Ford Focus RS Mk3
• Fits 2016–2018 UK models
• Suitable for 2.3-litre EcoBoost turbo petrol
• 3-inch main exhaust pipework
• Transitions into dual 2.5-inch pipework
• Manufactured from 304-grade stainless steel
• TIG-welded construction
• Patented VAREX electronically controlled valved muffler
• Large double-wall exhaust tips
• Improved performance exhaust tone
• Adjustable exhaust sound
• Uses factory-style mounting locations
• Gaskets, nuts and bolts supplied with the system

XForce specifies 3-inch pipework leading into dual 2.5-inch sections together with its VAREX rear muffler.

VAREX Adjustable Exhaust Technology

The standout feature of the ESFRS16VKCS is the XForce VAREX rear muffler.

Instead of permanently choosing between a quiet or loud exhaust, VAREX uses an internal electronically controlled butterfly valve to alter the path of the exhaust gases through the muffler.

This allows the driver to change the exhaust character depending on the situation.

Valve More Closed

Ideal for:

• Motorway cruising
• Residential areas
• Early morning starts
• Longer journeys
• Reducing exhaust volume when required

Valve More Open

Ideal for:

• Enthusiastic driving
• Track use
• Showing off the distinctive Focus RS exhaust note
• Drivers wanting a more aggressive performance sound

The VAREX design combines characteristics of both a conventional silenced muffler and a freer-flowing performance muffler in one system.

3-Inch Performance Exhaust System

The Focus RS uses a powerful turbocharged 2.3-litre EcoBoost engine, making exhaust flow an important consideration for modified vehicles.

XForce uses a 3-inch main exhaust diameter to provide a freer-flowing exhaust path compared with more restrictive factory-style systems.

The system then transitions into dual 2.5-inch rear sections, creating the distinctive twin-exit appearance associated with the Mk3 Focus RS.

This makes the system particularly suitable for owners carrying out supporting performance modifications such as:

• ECU remapping
• Performance air intake
• Upgraded intercooler
• High-flow downpipe
• Turbo upgrades
• Other Stage 1, Stage 2 or higher performance modifications

304 Stainless Steel Construction

The ESFRS16VKCS is manufactured using 304-grade stainless steel, selected for its strength, appearance and resistance to corrosion.

XForce also uses TIG-welded construction, helping create strong and accurate joints throughout the exhaust system.

This makes the exhaust well suited to UK performance vehicles that may be used throughout the year.

Designed Specifically for the Mk3 Focus RS

Unlike a universal exhaust system, the XForce ESFRS16VKCS is designed specifically around the Mk3 Ford Focus RS.

It is engineered as a bolt-on cat-back system using the vehicle’s existing mounting locations, helping provide straightforward installation when compared with a custom fabricated exhaust.

Designed for:

Ford Focus Mk3 RS 2.3 EcoBoost AWD – 2016–2018

This includes the standard UK Focus RS and applicable UK special-edition derivatives using the same Mk3 RS exhaust layout.

Potential UK variants include:

• Focus RS
• Focus RS Edition
• Focus RS Red Edition
• Focus RS Heritage Edition

The UK-only Heritage Edition retained the Mk3 RS’s 2.3-litre turbocharged engine and AWD layout, although modified vehicles and limited editions should always have their existing exhaust configuration checked before ordering.

Specifications

Brand: XForce
Product Type: Valved Cat-Back Exhaust System
Manufacturer Part Number / SKU: ESFRS16VKCS
Vehicle: Ford Focus RS Mk3
Engine: 2.3 EcoBoost Turbo Petrol
Drive: AWD / 4WD
Model Years: 2016–2018
Main Pipe Diameter: 3″
Rear Pipework: Dual 2.5″
Material: 304 Stainless Steel
Muffler: XForce VAREX Valved Muffler
Construction: TIG Welded
System Type: Cat-Back
Catalytic Converter: Not included

Why Choose XForce for Your Ford Focus RS?

XForce has developed performance exhaust systems for a wide variety of turbocharged performance cars, combining vehicle-specific pipework with its distinctive VAREX exhaust valve technology.

For Focus RS owners, the ESFRS16VKCS offers an excellent combination of:

• Aggressive performance-car sound
• Adjustable exhaust volume
• Large-bore exhaust flow
• Stainless steel construction
• Direct vehicle-specific fitment
• Sportier rear-end appearance

It is an excellent upgrade for owners who want their Mk3 Focus RS to sound more distinctive without having maximum exhaust volume all of the time.

Installation

Professional installation is recommended.

Because performance vehicles may have previously modified exhaust components, we recommend checking the vehicle’s existing downpipe and exhaust configuration before ordering.

The system is supplied with the required gaskets, nuts and bolts specified by XForce.

Important VAREX Information

The VAREX muffler is electronically adjustable. Control equipment supplied or required can vary depending on the exact XForce package.

SKU ESFRS16VKCS should not automatically be confused with XForce packages specifically sold with the separate VAREX Smart Box Bluetooth controller.

Please check the supplied package contents before ordering if Smart Box smartphone control is required.

Ideal For

• Ford Focus RS Mk3 owners
• Fast-road cars
• Modified Focus RS builds
• Stage 1 and Stage 2 vehicles
• Show cars
• Track-oriented vehicles
• Drivers wanting an adjustable exhaust note

Buy XForce ESFRS16VKCS in the UK

Order the XForce VAREX 3″ Valved Cat-Back Exhaust System for Ford Focus RS Mk3 2.3 EcoBoost from Performance Cars Parts UK.

A premium performance exhaust upgrade for one of Ford’s most iconic modern hot hatches.

SKU: ESFRS16VKCS