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mountune High Flow Exhaust (Part Number: )
mountune High Flow Exhaust (Part Number: )
mountune High Flow Exhaust (Part Number: )
mountune High Flow Exhaust (Part Number: )
mountune High Flow Exhaust (Part Number: )
mountune High Flow Exhaust (Part Number: )
mountune High Flow Exhaust (Part Number: )
mountune High Flow Exhaust (Part Number: )
mountune High Flow Exhaust (Part Number: )
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mountune High Flow Exhaust (Part Number: )
mountune High Flow Exhaust (Part Number: )
mountune High Flow Exhaust
Ford Focus ST 2013+

Features & Product Details

mountune has been engineering exhaust systems for years with the objective towards increased power and response coupled with an enhanced exhaust tone and appearance. Their Focus ST High Flow Exhaust system is manufactured from 2.5” , AISI 304 Stainless Steel mandrel bent tubing with lazer cut flanges. All muffler assemblies are robotically TIG welded AISI 304 Stainless Steel for long life under extreme performance and feature consistent internal diameter throughout the entire length of the assembly. To ensure improved performance while controlling sound, each muffler includes a three- layer Hybrid Synthetic sound absorption packing that eliminates droning, booming, and other undesirable tones. Tubing diameter also has a major impact on sound quality and careful consideration was given to size and performance. We have also incorporated slip fit connections at various strategic points to allow for easy installation and adjustment.

-Manufactured from AISI 304 2.5” mandrel bent Stainless Steel tubing
-TIG welded construction
-AISI 304 Stainless Steel hanger assemblies
-Mufflers feature consistent internal diameter
-3 Layer Hybrid Synthetic Muffler packing effective to 900c
-Large 4” Rolled Edge, Polished Stainless Steel Tips with mountune logo
-Full Width Rear Hanger ensures stable tip location
-Heavy duty "boss" type clamps
-Meets 95db Standard
-Does not affect Ford vehicle warranty
-CAD Engineered and designed
-Limited Lifetime Warranty


Brand: mountune
Exhaust Orientation: Straight Exit
Installation Hardware Included: Yes
Piping Coating: No
Piping Flex Joint: No
Piping ID: 2.50in
Piping Material: 304 Stainless Steel
Piping Taper: No
Silencer Included: No
Tip Material: Stainless Steel
Tip Qty: 2
Tip Shape: Round
Tip Size: 4.00in
Mfgr. Warranty: No Warranty
Condition: New Product
Return Policy:

RallySport Guarantee - 30 Days

Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.
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mountune High Flow Exhaust ( Part Number: 2363-CBE-AA)
mountune High Flow Exhaust ( Part Number: 2363-CBE-AA)
Too quiet 1 year ago
3out of 5stars

I chose the Mountune despite it being less than 3" in diameter because I was worried about drone and I prefer welded on tips. However, with the "sound imposer" removed, this exhaust is barely louder than stock, even under strong boost. I also don't like that the long muffler requires discarding the center tunnel chassis brace. Installation isn't bad once you realize you must bend the aluminum heat shield where the pipe crosses over rear axle beam. That section of pipe will not fit otherwise, but you can bend the heat shield back into place afterwards. The final section of pipe does adjust the tip position, so you do have control of both how far they extend and how close they are to the lower valance. However, placement of the muffler forward shifts even more weight to the front wheels. If I had to do it all over again, I would buy the 3" Milltek system. I did not even consider systems that were not 304SS.
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