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Performance Mufflers,
Exhaust Systems & Accessories

for 4x4, Fast Fours and big engine applications

NEW Mustang XForce Varex System!

New Products

VAREX® Smart Box™ bring the latest smart technology to the VAREX mufflers. Find out more

VAREX® Smart Box™ introduction video. Find out more

Bolt-On Systems

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By keywords or part numbers

Universal Products


Patented VAREX™ mufflers give you the full control of exhaust sound and performance level. Find out more

Universal Parts and Accessories

Universal sports mufflers from XForce offer outstanding performance and exceptional exhaust tone. Flexible designs that suit all cars. Find out more

Qucik Browse

A performance
for your car

VAREX mufflers combine both the design technology of the stock muffler and the performance muffler into one single compact unit. A sophisticated butterfly valve mechanism is implemented to redirect the exhaust gas flow and vary between the two.

More from XForce TV

See and hear XForce in action.

Click here

Full Version:XFORCE Totota 86/FT86/Subaru BRZ Unequalled length performance header

Intro:XFORCE Toyota 86/Subaru BRZ Unequalled Length Header and Exhaust System

TwoGuysGarage Interview at SEMA

"One Touch Exhaust Drone Elimination" XFORCE VAREX SMART BOX MATRIX Mode

"The Most Precise Exhaust Valve Control" XFORCE VAREX Smart Box Manual Mode

"The Right Exhaust Sound For The Right Place" XFORCE VAREX SMART BOX GEO Mode

XFORCE VAREX Smart Box Bluetooth Exhaust Controller

John Bowe reviews the XFORCE VAREX SmartBox Exhaust Controller on Mustang GT