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Frequency Intelligent Exhaust is a group composed of the car enthusiasts and perfectionists.

The only thing we care about the most is to offer our customers the Best exhaust!

We do our best effort to have the breakthrough on pursuing the perfect exhaust sound and the quality work.

Hand made out of T304 Stainless steel and elaborately TIG welded.

Our X-Pipe System features a novel design to achieve high-pitched sound for an enhanced exhaust sound quality.

The Fi system is lighter than the OEM system and achieve a high level of quality that is unparalleled.

We wishes you enjoy the unique sound of Frequency Intelligent Exhaust.

Mercedes-Benz CLS63 AMG Complete Exhaust System including:
Ultra High Flow Catless Downpipe / Mid-X Pipe / Catback Valvetronic Muffler / Quad Tips (AMG Style)

Mercedes-Benz CLS63 AMG fitted with Fi Exhaust Powerful sound!!!

Mercedes-Benz CLS63 AMG with Fi Exhaust sound DB test:

Please visit our website for more information: MERCEDES-BENZ W218 AMG CLS63 Valvetronic Exhaust System - Fi-Exhaust

Feel free to contact us:)
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