SKU: 93855008122

APR CBK0042 - Catback Exhaust System - TT RS (8S)

$989.97 $1099.97
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Description

APR CBK0042 - Catback Exhaust System - TT RS (8S)Fits 2018 2022 Audi TT RS Overview The APR Catback Exhaust System personalizes your vehicle's looks, sound and performance. Beautifully hand crafted T304 stainless steel components adorn the system with stunning TIG welding throughout. Our straight through brushed finished mufflers smooth the exhaust note to a deep growl, without adding restrictions or rasp. Strong high quality bracketry and OEM style clamps hold the system steadily in place, making

Fits 2018-2022 Audi TT RS

Overview

The APR Catback Exhaust System personalizes your vehicle's looks, sound and performance. Beautifully hand-crafted T304-stainless-steel components adorn the system with stunning TIG-welding throughout. Our straight-through brushed-finished mufflers smooth the exhaust note to a deep growl, without adding restrictions or rasp. Strong high-quality bracketry and OEM-style clamps hold the system steadily in place, making the install or removal a snap, and fitment simple, yet precise. Dual 2.5" mandrel-bent exhaust paths provide an ultra-smooth path, steadily feeding exhaust gasses out of the quad exit system, while looking tidy from under the rear bumper. Our cast valve housings enable the vehicle to be fitted with the factory electronic valve actuators, retaining OEM valve operation for variable sound levels. Finally, our 170x112mm ovalized diamond black exhaust tips finish the system, adding a classy RS-inspired touch to the rear of the vehicle.

Features:

  • T304 stainless-steel construction
  • Argon back-purged TIG welding throughout
  • Dual 63.5mm mandrel-bent brushed tubing with quad 63.5mm outlets in dual tips
  • 170x112mm ovalized diamond black tips
  • Dual exhaust valves
  • Brushed-finished sound absorption mufflers
  • Rugged and precise mounting brackets
  • OEM style slip clamps
  • Plug and play design
  • Low-profile design, suitable for lowered vehicles
  • Larger diameter piping compared to stock
  • Larger diameter tips compared to stock
  • In-house design with world-class manufacturing and quality control
  • Easy to install

Specs

Brand APR
Category Exhaust
Emission Code 6
Material T304 Stainless Steel
Product Type Exhausts (Catback Systems)
Version Catback - TT RS (8S)
UPC 810009933441
Part Number CBK0042

Tech Resources

Instructions - tl100162_rs3_catback_web.pdf 

System Overview

The factory exhaust system starts life as a dual pipe setup but then converges to a single pipe before entering a suitcase style muffler. Our system uses dual 63.5mm piping with no mid mufflers or resonators, and continues all the way to our large sound absorption rear muffler. The cross sectional area of our dual setup is 26% larger than stock! There the system splits to a quad 63.5mm design. Internally the valved path is straight through with no muffling, while the unvalved path is perforated for sound level reduction. This exits the rear into a pair of 170x112mm diamond black exhaust tips that look menacing from the rear of the vehicle.

Mufflers

The mufflers are responsible for tuning the exhaust note and do so without adding unnecessary restrictions to the system. Each unit features a straight-through perforated tube that’s tightly wrapped with stainless steel and fiberglass material. The mufflers have a beautiful brushed finish, and are tucked high in the exhaust tunnel, making them perfect for lowered vehicles.

Exhaust Valves

Our system features two valves that allow control of the volume of the system via the factory exhaust valve actuators. In doing so, the system can go from tame to aggressive instantly! Unlike pneumatic systems, and other common valves found in the market today, our system maintains identical OEM operation all the way down to the factory valve actuation angles. Furthermore, the system is fully compatible with exhaust remotes, allowing end users to manually open the system at the click of a button. We cast the valve housings out of T304 stainless-steel. Internally the system uses CNC-machined T303 components and brass bushings, which have stood up to our extreme torture testing. All necessary hardware is welded into place and is designed to combat heat and vibration for years to come.

Brackets

Our brackets ensure a strong and precise fit, every time. With our design, you’ll never need to worry about the brackets sagging and losing their shape over time, or the post slipping out of the hangers. The brackets are rigid, exact in their position, fit snugly in place and are made to stand the test of time.

Tubing and Welds

We use T304 stainless steel tubing throughout. We brush and de-burr all pipes, use mandrel bending techniques to ensure the pipes keep a constant diameter throughout, and use argon-back purged TIG welding for a strong and attractive weld.

Tips

Our 170x112mm ovalized exhaust tips upgrade the rear of the vehicle. The RS-inspired tips tuck nicely into the factory valance, gently following the valance’s curves and demanding all the right attention in all the right places. We etch a small and discreet APR logo onto the top of each tip, and we tig weld the tips into place.

Clamps

Our system uses OEM-style low-profile slip clamp. Our clamp selection allows the system to sit high in the exhaust tunnel, as is favored by lowered vehicles, with ultimate compatibility no matter what midpipe you may have. Each connection point is strategically placed to ensure the system has minimal opportunity to rotate during install or during years of heavy driving. Finally, because there are no flanges or swedges on the pipe, fitting the system to the factory midpipe or others is a breeze. There’s no cutting, welding, or glaring compatibility issues, and there are no gaskets to replace.

Compatibility

We’ve designed our system to be 100% bolt-on. There’s no cutting, welding, or finagling to get the system to fit. It simply bolts on for use with the factory midpipe

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
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]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 93855008122

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4.3 ★★★★★
Based on 10 reviews
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Product Reviews
C
Carmen Alicea
Natrona Heights, US
★★★★★ 4
The grovel wasn’t groveling.
Format: Kindle
Oh no, if you’re going to promise grovel, you better deliver. And unfortunately… this one fumbled the assignment. Three Alphas who rejected their scent match, broke her heart, and let her walk away for ten years, only to realize she was “the one suddenly”? I was ready for emotional devastation and tearful, knees-in-the-snow apologies. But here’s the problem: the grovel just didn’t hit hard enough. For a betrayal that deep, the emotional payoff felt rushed. The Alphas express regret, sure, but it never quite reaches that gut-wrenching, ache-for-it level you expect from a story built entirely on redemption. Their apologies come, but they lack the prolonged suffering, the desperate proving, the earn it or lose her forever energy that would’ve made this unforgettable. After ten years of heartbreak and abandonment, Noelle's forgiveness comes a little too easily, a little too quickly. You can feel the story nudging her toward reconciliation before the emotional scales are fully balanced. The chemistry is still there, the tension still simmers, and the small-town winter vibes are undeniably cozy, but for a book titled Grovel, the emotional reckoning needed to be deeper, messier, and far more punishing. A compelling setup with plenty of angst and longing, but if you’re here for hardcore grovel and slow-earned forgiveness, this one might leave you wanting more.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 26, 2026
R
Raielyn
Alexandria, US
★★★★★ 5
Christmas fluff
Format: Kindle
This is a super cute sweet and fluffy sort of story, no OTW no angst a little bit of sadness some reject but you know in the end they come back together as a better stronger pack.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 13, 2026
N
Verified Purchase
NewFriendJen
Draper, US
★★★★★ 5
very cute
Format: Kindle
This was a great winter read with grovel! I love that each MMC took his own approach to groveling, and that the FMC didn’t forgive them easily.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 17, 2026
V
Vishtani
Grantham, US
★★★★★ 3
Very misleading title…but not a bad book. Spoilers!
Format: Kindle
If you love ABO fated/scent match books or even just second chance books in general this is a cute quick read. I’m really confused why the title is grovel but there is literally no groveling in the book…AT ALL! There is only little or no thought or effort involved apologies (on two of the MMCs part, and absolutely nada on the third MMC’s part) and general alpha this omega is mine, coupled with light small town older generation meddling in the relationship, but ABSOLUTELY NO GROVELING before a heat reconnects the MCs. Honestly if it was named almost anything else I would have rated it higher, but I went in expecting at least some light groveling, and found none.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 13, 2026
B
Brenda A Davis
Birmingham, US
★★★★★ 4
Christmas 🎄 10 yrs later
Format: Kindle
Cute story of Moeller FMC who gets rejected by her childhood pack that at age 17 decides to break off their relationship which destroys her, 10 yrs later she returns home to a sickly grandmother and has to encounter them once again but this time her eyes are wide open with the possibility that they will have to grovel and romance hurt
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 4, 2026

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