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Availability:
In Stock.
Arrives
Wednesday, Sep 30
Features
- Roush part # 421610
- Fits any 2013-2017 Focus including RS & ST
- Fits 2018 Focus ST
- Enhances exhaust note for high-performance sound
- High-flow 3" cat-back system made from 409 stainless steel, includes performance-flow muffler
- Dual, round 304 chrome tips with rolled edge and Roush logo
- Uses the saIncludes all necessary clamps and hardware for installationme factory mount locations
- Incorporates CNC mandrel bending for optimum air flow
Description
This exciting new kit from Roush combines raw performance with a deep, throaty note to take the ordinary sport-compact to a sport-tuned machine.
Manufacturer: ROUSH Performance
Brand: Roush
Model: 421610
Item Weight: 32 pounds
Product Dimensions: 54 x 13 x 25 inches
Item model number: 421610
Exterior: Chrome Tips
Manufacturer Part Number: 421610
OEM Part Number: 421610
Date First Available: March 27, 2014
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Sep 30
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Installation was a breeze, sounds awesome and not too loud to daily drive. Very good exhaust setup for the Focus ST and not too expensive compared to the competition. Mine rubbed the rear suspension a little bit but this was remedied with a hose clamp to hold it out of the way. I recommend the Torque Solutions aftermarket exhaust hanger kit for some extra support.
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Reviewed in the United States on July 1, 2019 by UrkMrl
This exhaust system strikes the perfect balance between being aggressive sounding yet not obnoxious. Basically, it's what we call an "old man's exhaust" in the old muscle car days. I'm very please with the sound. Now, for the bad. It's definitely a quality exhaust; however, I had to make some mods to make it how I like it. For installation, I had to trim about 1.25" off of the hanger on the piece that goes over the rear suspension to get it to fit within that tight area; no big deal. I didn't like how low the exhaust tips ended up relative to the bumper, so I bent the hangers on the rear section to raise it about an inch (and, yes, I used the Cobb isolators). And, I really didn't like how far the tips extended past the bumper, so I cut about an inch off of the wye pipe. I'm not a fan of the chrome tips, so I may buy a separate exhaust tip to replace them. But, overall, it's a great exhaust for the price and I don't regret the purchase. But, for the mods I had to make, I'm deducting one star.
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Reviewed in the United States on November 26, 2023 by Mike in Texas
I absolutely love this exhaust; it's loud, but not too obnoxious - it's got a tiny bit of drone, but not too much and it's easy to drown out (either with music, or opening windows / sun roof). The install is super easy, and this exhaust system comes with everything you need (minus basic tools). The existing exhaust may be hard to get off if it's rusted bad, and you will need a sawzall to slice through it if you don't want to drop the rear sub-frame.
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Reviewed in the United States on July 8, 2021 by Chris
My order arrived today Roush exhaust for my 2013 focus. Of course it was late and the packaging looked like it had been a demolition derby FedEx sucks so bad surprisingly all the part appear to have made it it to my porch with minimal damage to the exhaust system. I wish people would stop shipping with FedEx. maybe they would get there act together.Two stars for the horrible job FedEx did. The Roush exhaust it self is really nice, good quality, installation was straight forward.
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Reviewed in the United States on January 2, 2026 by jerry
Love how easy to install! Great sound and looks good on my TB ST, this is a must have for anyone that wants a noticeable sound that's not ricey sounding it dose drone at highway 70+ speeds and if you don't have the Cobb exhaust mounts it shakes more but nothing outrages I have the stock ones on now, I will install the Cobb ones at later time! Great buy just in for my birthday and only took 3 hours total to cut out the old and install the new!
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Reviewed in the United States on September 21, 2016 by anjelica
It's an easy install nice exhaust sound It has a real deep Growling sound Has a lot of drone at basically every rpm that can be fixed with a vibrant ultra quiet Resonator
Reviewed in the United States on September 9, 2019 by Dominic B.
Great exhaust. Fit my 17 st well and sounds very good. Deep and not ricey as I hoped. Great build quality. Would buy again
Reviewed in the United States on August 15, 2017 by Garret
The Roush 3” cat back bolted easily and solidly, with very little need for final adjustments shot of the twin outlet section and stainless tips. I wound up using the stock rubber hangers. They work and hold the exhaust up tighter to the chassis than aftermarket kit I had bought. The main reason I didn’t give 5 stars is the 3100 RPM drone at highway speeds, otherwise it’s a great upgrade.
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Reviewed in the United States on September 9, 2018 by dann robbins