Flashark 6.6L Duramax Diesel: EGR Delete Kits, Exhaust Up-Pipes & More

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from 2097 reviews

Long Tube Exhaust Headers for 1997-2004 C5 Chevy Corvette LS1/LS6 5.7L

D.Taylor

My C5 Flashark Headers Experience

At first no one wanted to install them because they wasn’t the high class name brand and because of the fittment. I found a shop (Johnny’s Garage) and he was up for the challenge. He pointed out a lot of flaws and by him being a welder he was able to do some modifications and fabrication. Curtain things didn’t align up such as the gaskets, the fitting of the headers that was too close to the undercarriage of the car and where the headers bolt on to the oem braket. Other than that he made it work and I was happy with the 3 day project waiting on parts… smh. I spent more than I was supposed too :( on this project because he was the only shop that wanted to take on this project. My car sounds amazing tho🫡 Thanks Flashark for your affordable price compared too others.

Long Tube Exhaust Headers for 1997-2004 C5 Chevy Corvette LS1/LS6 5.7L

10/14/2025

Exhaust Header for 2001-2005 Lexus IS300 3.0L 2JX-GE DOHC ALTEZZA XE10 JCE10 l6 2JZ-GE

Pleasantly surprised with this header

I ordered this header as a temporary replacement for a cracked "name brand" header. I'll be completely honest, due to the price I was not expecting anything great but I was surprised, it's actually pretty good.

I did have a hard time fitting the header. The two banks weren't spaced far enough apart so I did have to use a big pry bar and hammer to get bank 1 into the studs. After this, I was able to zip the bolts into the studs with no issues. The header did seem just a touch shorter than the "name brand" header I had before. Neither of these things were an issue for me, for the price it's about as great as I could have expected. Build quality seems on par with the other header I had and the O2 sensor locations are actually better (perfect IMO) on the flashshark header.
I don't expect the included gaskets to hold up forever, if I am able I will update this review next drift season.

I did wrap the header with DEI titanium heat wrap, the "polished" finish looked great before wrapping.

All In all, I bought this header for temporary use, but I'll be using it permanently because it seems like it's going to be completely fine, in fact better than a "name brand" header.

You will most likely struggle a little bit during install but for the price (which is REALLY GOOD) it is completely worth it.

I would recommend this header to a friend and I would buy another!

Exhaust Header for 2001-2005 Lexus IS300 3.0L 2JX-GE DOHC ALTEZZA XE10 JCE10 l6 2JZ-GE

10/10/2025

Catback Exhaust System For 2015-2020 Ford F150 2.7L 3.5L 5.0L 3-Inch W/ Black/Polished Muffler Tips

Richard P.

Great product for a great price.

Looking for a dual exhaust setup for my 19 F150 5.0. Researched all the HIGH dollar systems and none had the sound or look I wanted. Stumbled on a video and there it was. The dual exhaust that had the look and sound I wanted. And best of all it was 1/3 the price of the others.
A bit skeptical when all I could find was 3 reviews and videos, but took the chance. It arrived in less then a week and when I opened, I was surprised at the quality, but still skeptical about fit.
Unboxed and laid everything out and started the install. The only thing I didn't see was instructions, but being a typical dude, I don't read instructions anyway. Got it all in loosely then started tightening and adjusting. Snugged everything up and took a quick ride, came back and made sure all stayed tight and in place and was done. All said and done taking my time, took about 3 hours start to finish.
Definitely don't regret this purchase, looks and sounds great and so far no drone at any rpm.

Catback Exhaust System For 2015-2020 Ford F150 2.7L 3.5L 5.0L 3-Inch W/ Black/Polished Muffler Tips

10/09/2025

Oil Catch Can for 2003-2006 Nissan 350Z 2004-2007 Infiniti G35 VQ35DE PCV Side

Elias D.

Great kit

Installed was easy and quick. Great product and well under the price of some catch cans going for ridiculous prices! Thanks for giving us an alternative.

Oil Catch Can for 2003-2006 Nissan 350Z 2004-2007 Infiniti G35 VQ35DE PCV Side

10/05/2025

Cold Air Intake Kit for 2012-2015 Honda Civic Si with 2.4L 4-Cylinder

Anonymous

Cool fit and finish

Specifically for the 9th gen civic si, you gotta take the bumper off to install this. It tucks into the front left lower part of your bumper. Remove the original air intake in total as well, the entire oem assembly.

Cold Air Intake Kit for 2012-2015 Honda Civic Si with 2.4L 4-Cylinder

10/04/2025

1990-1997 Mazda Miata MX-5 Eunos N1 Muffler Tip Catback Exhaust System 1.6L 1.8L 2DR

David S.

Easy install

Easy bolt on action. Definitely sits lower than the stock so watch out for scrapes. Sounds amazing. Definitely recommend!!

1990-1997 Mazda Miata MX-5 Eunos N1 Muffler Tip Catback Exhaust System 1.6L 1.8L 2DR

10/04/2025

1990-1993 Honda Accord Catback Exhaust 2.5" Pipe 4" Tip N1 Style 2.2L SOHC

B- r.

Good review!

Great quality fits perfect i love it on my 92 CB7
Couldn't be happier im gonna but the header next!

1990-1993 Honda Accord Catback Exhaust 2.5" Pipe 4" Tip N1 Style 2.2L SOHC

10/03/2025

Catback Exhaust System for 2015-2021 Subaru WRX / STI, 4-inch Quad Muffler Tips, N1 Style Burnt Tip

Chris P.

This Catback sounds insane!!

I was very surprised by the quality of this catback, being so adorable, I thought i would be getting a very cheap, poorly welded exhaust. The welds look like what you'd expect out of an exhaust triple the price. And same goes for the sound! I highly recommend giving flashark a chance if your looking for an exhaust!

Catback Exhaust System for 2015-2021 Subaru WRX / STI, 4-inch Quad Muffler Tips, N1 Style Burnt Tip

09/28/2025

2008-2021 Subaru WRX Sedan and 2011-2021 Subaru WRX STI Sedan Cat-Back Exhaust System

Anthony D.

2008-2021 Subaru WRX Sedan Cat-Back

I never leave feedbacks when I buy stuff but I seen this hasn't been reviewed so I wanted to give my honest feedback to anyone looking to buy this exhaust setup and it seems to good to be true for the price. Honestly 10/10 easy install and sounds great too I have a full 3" downpipe and with this makes it sounds better than my old exhaust setup . If you guys are looking for a new exhaust setup for your wrx. Ill recommend it

2008-2021 Subaru WRX Sedan and 2011-2021 Subaru WRX STI Sedan Cat-Back Exhaust System

09/27/2025

Steven H.

SBC Alternator/Power Steering Pump Accessory Drive Bracket Kit for Double Hump Heads 305 327 350 383 5.0L 5.7L V8

09/27/2025

Y Pipe Downpipe Exhaust for 2008-2016 Nissan 370Z Z34 / Infiniti G37 V36 VQ37VHR 3.7L

kevin s.

370z y pipe

I'm very pleased with my purchase so far. The pipe fit almost perfectly. Sounds good too. Highly recommend!

Y Pipe Downpipe Exhaust for 2008-2016 Nissan 370Z Z34 / Infiniti G37 V36 VQ37VHR 3.7L

09/27/2025

Brandon D.

Quad muffler burnt tip cat back exhaust

Bought the exhaust. Took awhile to get it due to being out of stock but once it was in stock they NDA it to me. Kept me in the loop about when it would be available also. Came as pictured. Was easy to install. Looks good and sounds good. Only real issue I had was they did not include the adapter to hook it up to the cat so I had to purchase it separately. Would like to see them add it to the kit but overall can't complain.

Catback Exhaust System for 2015-2021 Subaru WRX / STI, 4-inch Quad Muffler Tips, N1 Style Burnt Tip

09/26/2025

Turbo Downpipe Exhaust for Subaru GT35 & GT35R 3 Inch

Juan B.

Good quality

Item worked as it should and it’s a good quality

Turbo Downpipe Exhaust for Subaru GT35 & GT35R 3 Inch

09/25/2025

Catback Exhaust System 4" Quad Muffler Tip w Polished Tip for 2015-2024 Subaru WRX / STI

Allan

Subaru sti 2017 Cobb catted down pipe and intake and tune

Really nice tone really good quality and easy to install

Catback Exhaust System 4" Quad Muffler Tip w Polished Tip for 2015-2024 Subaru WRX / STI

09/22/2025

Exhaust Header for 1996-2001 Chevrolet Chevy S10 Blazer GMC Sonoma Jimmy 4.3L V6 4WD

Vaughn N.

Tight fit

I put these on a 2004 Blazer. They will work if you can cut off the EGR tubes and weld up the holes. They are built very well and installed in the same location as the stock manifolds. Use a little high temp silicone at the contact areas and they seal completely. I am very pleased with these and love showing them off.

Exhaust Header for 1996-2001 Chevrolet Chevy S10 Blazer GMC Sonoma Jimmy 4.3L V6 4WD

09/22/2025

good product

Put this on my MK5 GTI and the turbo spools faster now. The deeper tone is addictive, and the install was straightforward with basic tools.

Works Exactly as Intended

Put this catch can on my ’21 Q60. Install was straightforward, hoses lined up perfectly. Engine feels smoother on acceleration, and I’m confident it’s preventing future carbon buildup.

Great Fit and Sound

Put these on my ’10 G37 Coupe last month. Fitment was spot-on, install went smooth, and no rattles or leaks after a few hundred miles. Noticeable bump in power and a deeper exhaust tone without too much drone.

Installed these on my ’08 G37X over the weekend, and I’m impressed. The fitment was spot-on, no weird gaps or alignment issues. Throttle response feels snappier, and there’s a nice bump in low-end torque. The sound is a bit more aggressive but still daily-driver friendly.

I installed these on my 2012 G37 Coupe. Fitment was decent—took some effort around the steering shaft but nothing crazy. Once installed, the car feels more responsive and definitely pulls harder above 4K RPM. The sound is throatier too, especially at wide open throttle. Paired with a tune, it made a noticeable difference. So far, no leaks or issues.

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6.6L Duramax Diesel

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