SKU: 9747937413

Stillen Cat Back Exhaust "Competition Series" with Stainless Tip for Nissan Z 2023+ (504500)

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Description

Stillen Cat Back Exhaust "Competition Series" with Stainless Tip for Nissan Z 2023+ (504500)STILLEN is excited to release the cat back exhaust system for the 2023 Nissan Z. During the development of this exhaust system STILLEN engineers went through multiple different exhaust configurations and prototypes determine what would provide the best performance, best flow, and best sound. After months of exhaustive testing the team determined that the best design starts with a stainless steel flange precision tig welded to 2. 5 tubes leading into a

STILLEN is excited to release the cat-back exhaust system for the 2023 Nissan Z. During the development of this exhaust system STILLEN engineers went through multiple different exhaust configurations and prototypes determine what would provide the best performance, best flow, and best sound.

After months of exhaustive testing the team determined that the best design starts with a stainless steel flange precision tig welded to 2.5 tubes leading into a CNC bent and CNC machined X pipe. During the development the team tested a true dual exhaust system and determined that it was too loud and too flat sounding. Something very common with twin turbo V6 engines. However, in an effort to get the best performance possible we did not want to restrict the engine by going from dual 2.5 tubes to a single 3 mid-pipe. The perfect solution was an X pipe which offered a cross-sectional area of around 4 . This allowed the team to merge the left and right banks which improved the sound tremendously without restricting the exhaust flow. Additionally, it allowed the team to fit the largest possible collector through the narrow chassis tunnel in the center of the car.

From the X pipe the CNC mandrel bent 304 stainless steel tubes lead into a pair of precision tig welded high polished finish, mufflers. To design these mufflers the team at STILLEN created new, proprietary, machinery to complete the assembly and welding process in-house. This equipment along with the manufacturing procedures developed exclusively for this muffler allows the team to precisely tig weld the polished stainless steel muffler bodies and end caps leaving behind a stack of dimes finish with a fantastic multi-color burn trail from the tig welding process.

To finish the exhaust system the customer has a choice of polished stainless, burnt stainless steel, or carbon fiber exhaust tips. Additionally the exhaust system is supported by a STILLEN branded cross-brace supporting and accentuating the exhaust system. We are extremely proud to offer this exhaust system and even more proud to continue our many decades of American manufacturing.


Features and benefits:

  • Limited lifetime warranty
  • 304 stainless steel
  • Made in America
  • Tig welded construction
  • CNC Machined
  • CNC mandrel bent
  • Dyno tested
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 9747937413

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Debby & Brian
West Palm Beach, US
★★★★★ 5
Cozy Omegaverse
Format: Kindle
This is the true definition of Cozy Omegaverse. LA wedding coordinator meets her pack at the location for a couple’s destination wedding. Low angst because they are scent matched high heat with heats and knots. Everything you love about this genre with very little anxiety. Simply a fun experience to read and a book I will comeback to when I’m in a slump. I simply love reading this book
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Reviewed in the United States on March 19, 2026
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Iputmybookdownforthis
Waukegan, US
★★★★★ 4
Cute Omegaverse story
Format: Kindle
3.75 stars and 2 for spice. Adorable Omegaverse story about a wedding planner who has to go to a small town to plan a wedding for a movie star. While there, she meets her pack. This covers her struggles of not living there but trying to keep her relationship going with her 3 Alphas. It's a quick read and cute, so I recommend it for people who like light-hearted RH stories.
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Reviewed in the United States on May 31, 2025
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Dani
Birmingham, US
★★★★★ 3
real good
Format: Kindle
This was a solid read for the ABO universe. The characters are great. The smut scenes were well written. And the town is so cute I want to go there. It didn’t have much character development it just felt like I was getting to the characters as they were getting to know each other.
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Reviewed in the United States on April 27, 2025
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Tstar
West Palm Beach, US
★★★★★ 5
So sweet
Format: Kindle
It’s so unexpectedly sweet that it sneaks up on you. Each character is so unique and charming. I love the openness and honesty among their pack. It really blows me away how wonderful this omegaverse trope plays out. I received a free copy of this book and am voluntarily leaving a review.
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Reviewed in the United States on March 21, 2026
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Queen of Anxiety
Bozeman, US
★★★★★ 2
Needs editing
Format: Kindle
Cute storyline and promising characters, but the lack of editing is painful to read. I would love to read an edited version.
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Reviewed in the United States on April 10, 2025

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