XForce Ford Mustang EcoBoost VAREX Cat-Back Exhaust – ES-FM19VMK-CBS

Give your Mustang EcoBoost a more distinctive exhaust note while retaining control over its sound with the XForce ES-FM19VMK-CBS VAREX Cat-Back Exhaust System.

Designed specifically for compatible Ford Mustang 2.3 EcoBoost Fastback models, this performance exhaust combines free-flowing twin 2.5-inch pipework with XForce’s electronically controlled VAREX muffler technology.

The system is manufactured from high-quality 304 stainless steel for excellent durability and corrosion resistance, making it suitable for performance cars used throughout the year.

Twin 2.5-Inch Performance Exhaust System

The ES-FM19VMK-CBS uses a twin 2.5-inch exhaust layout designed to provide efficient exhaust gas flow while producing a deeper and more purposeful Mustang exhaust note.

Mandrel-bent pipework helps maintain a consistent internal diameter through bends, reducing unnecessary restrictions compared with more restrictive factory exhaust layouts.

An X-pipe positioned ahead of the centre muffler helps equalise exhaust pulses between the two sides of the system. This contributes to a smoother exhaust tone while maintaining good exhaust flow.

XForce VAREX Adjustable Exhaust Sound

One of the main advantages of the XForce ES-FM19VMK-CBS is its pair of VAREX valved rear mufflers.

Instead of permanently choosing between a quiet road exhaust and an aggressive performance system, VAREX technology uses an electronically controlled internal valve to alter the route taken by the exhaust gases.

With the valves in a quieter position, exhaust gases are directed through a more restrictive chambered route to reduce sound levels.

Open the valves and the system allows a more direct exhaust path, creating a deeper and considerably more aggressive exhaust note.

This gives Mustang owners much greater flexibility when switching between everyday driving and occasions where a stronger performance sound is preferred.

Dual Oval VAREX Rear Mufflers

At the rear of the vehicle, the system uses dual oval VAREX mufflers with 3-inch inlets.

These combine the noise-control benefits of a conventional muffler with XForce’s variable exhaust valve system, allowing the driver to adjust the character of the exhaust rather than being limited to one fixed sound level.

Premium 304 Stainless Steel Construction

The complete exhaust system is manufactured using 304-grade stainless steel.

304 stainless steel offers excellent resistance to corrosion and heat, making it particularly suitable for performance exhaust applications and UK road conditions.

The stainless construction also provides a premium appearance while helping deliver long service life when correctly installed and maintained.

Quad 4-Inch Exhaust Tips

The system finishes with four polished 4-inch exhaust outlets, giving the rear of the Mustang a much more aggressive performance appearance.

The quad-tip configuration complements the Mustang’s wide rear profile while clearly distinguishing the system from the standard EcoBoost exhaust.

Optional XForce SmartBox Compatibility

Owners wanting additional control can pair compatible VAREX systems with the optional XForce SmartBox.

The SmartBox can provide Bluetooth smartphone control and advanced automatic valve operation based on parameters such as:

• Engine RPM
• Vehicle speed
• Throttle position
• GPS location

The SmartBox is an optional accessory and should not be assumed to be included with the exhaust unless specifically stated in the product package.

Why Choose the XForce ES-FM19VMK-CBS?

The XForce Mustang EcoBoost VAREX system is ideal for drivers looking for an exhaust that combines performance styling with adjustable sound.

Key advantages include:

• Adjustable VAREX exhaust volume
• Twin 2.5-inch performance pipework
• X-pipe exhaust layout
• Dual oval VAREX rear mufflers
• Premium 304 stainless steel construction
• Quad 4-inch polished exhaust tips
• Improved performance exhaust appearance
• Suitable for road cars where different exhaust sound levels are useful

Vehicle Compatibility

This exhaust is designed for compatible Ford Mustang 2.3 EcoBoost Fastback / Coupe models.

XForce specifically states that ES-FM19VMK-CBS does not fit convertible models.

Always confirm vehicle specification before ordering, particularly model year, body style and engine configuration.

FAQ

Does XForce ES-FM19VMK-CBS fit the Ford Mustang EcoBoost?

Yes. The ES-FM19VMK-CBS is designed for compatible Ford Mustang 2.3-litre EcoBoost Fastback models. Vehicle specification and production date should always be checked before ordering.

Does ES-FM19VMK-CBS fit the Mustang convertible?

No. XForce specifically states that the ES-FM19VMK-CBS does not fit convertible models.

What size is the XForce Mustang EcoBoost exhaust?

The system uses a twin 2.5-inch cat-back exhaust configuration.

What is XForce VAREX?

VAREX is XForce’s electronically controlled exhaust muffler technology. An internal valve changes the exhaust gas path, allowing the exhaust sound level to be adjusted.

Is the XForce ES-FM19VMK-CBS stainless steel?

Yes. The system is manufactured from 304-grade stainless steel.

Does it have an X-pipe?

Yes. The ES-FM19VMK-CBS uses an X-pipe positioned ahead of the centre muffler.

What exhaust tips are included?

The system features four polished 4-inch exhaust tips.

Can the XForce SmartBox be used with this exhaust?

Yes. XForce lists the system as compatible with its optional SmartBox, which can provide smartphone and automatic valve-control functionality.