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Description
APR Full Catback Exhaust System - Audi / B9 SQ5Introducing the APR Catback Exhaust System for the Audi SQ5 The APR Catback Exhaust System for the Audi SQ5 is a complete, high performance exhaust solution that runs the entire length of the vehicle from the catalyst back. The system is sold in two sections: The front post catalyst downpipes and midpipes, and the rear catback section. Inspired by the larger center pipe design of the higher output RS4 and RS5 models, this system is engineered to boost
Introducing the APR Catback Exhaust System for the Audi SQ5
The APR Catback Exhaust System for the Audi SQ5 is a complete, high-performance exhaust solution that runs the entire length of the vehicle from the catalyst back. The system is sold in two sections: The front post-catalyst downpipes and midpipes, and the rear catback section. Inspired by the larger center-pipe design of the higher-output RS4 and RS5 models, this system is engineered to boost performance, and elevate sound that's sure to make a statement! Crafted from premium materials and built with advanced manufacturing techniques, this system is designed to withstand harsh conditions and deliver lasting performance. Expect a bold, aggressive growl at wide-open throttle, along with an impressive gain of 10 horsepower and 12 FT-LBS of torque to all four wheels with the full system!
Unmatched Design and Precision Engineering
The APR Midpipe System includes downpipes and midpipes that travel post-catalyst in the engine bay to the underside of the vehicle, eliminating the factory resonators in the process. The APR Rear Catback System starts just after the midpipes but can be combined with our midpipe system to making this a true full-system upgrade. We've minimized restrictions with smooth transitions, oversized piping, and a straight-through muffler. Constructed from mandrel-bent T304 stainless steel with a brushed finish and TIG welding throughout, this exhaust system is as durable as it is striking. Installation is hassle-free, thanks to precision-fit brackets, OEM-style clip clamps, including adapter clamps making both systems compatible with either our systems, or the factory systems.
Inspired by RS Performance
Like the RS4 and RS5, this system features a reengineered exhaust routing design. It utilizes dual 2.5" (63.5mm) downpipes to dual 2.75" (70mm) midpipes pipes merging through a cast Y-junction into a massive 3.5" (91mm) midpipe, replacing the restrictive factory dual-pipe setup. The exhaust valve is fully integrated with the OEM control system, adjusting automatically to enhance sound during aggressive driving while maintaining a quieter profile during cruising. When closed, exhaust gasses route through the rear muffler featuring straight-through sound absorption technology and when open, bypasses the rear muffler all together.
Experience the APR Difference
Designed for enthusiasts seeking the perfect balance of power, sound, style, and quality, the APR Catback Exhaust System for the Audi SQ5 is a testament to engineering excellence. With its performance-driven design and durable construction, this system not only transforms your driving experience but also ensures years of reliable performance.
Features:
- Plug-and-Play with APR and factory system.
- Performance gains of 5 AWHP and 6 AWFT-LBS of torque on each system on their own or 10 AWHP and 12 AWFT-LBS of torque when combined.
- Premium T304 stainless steel construction with TIG welding for strength and durability.
- Optimized flow through dual 2.5” downpipes to 2.75” midpipes to single 3.5” midpipe exiting through dual 3” downturns.
- Mandrel-bent brushed piping paired with electropolished cast splitters for a refined finish.
- Precision brackets and slip clamps ensure accurate alignment and hassle-free installation.
- Integrated muffler minimizes drone and enhances sound quality.
- Valve-controlled rear muffler dynamically adjust sound based on driving style.
- Smooth transitions and straight-through components maximize performance by reducing restrictions.
- Strikes the perfect balance of power, sound, style, and quality for enthusiasts.
- Fully emissions compliant for worry-free operation.
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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4.0 ★★★★★
Based on 1799 reviews
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Product Reviews
★★★★★ 4
Well written. Funny...out loud gafawing funny. Fun. Well crafted plot. Wonderful characters.
Format: Kindle
What a lovely surprise!
A well written, well plotted. Funny. Fun. Mystery with two fresh and fine friends...Lady Hardcastle and Flo Armstrong , her erstwhile Lady's maid, Servant, Strong Right Hand Woman and friend...and...Inspector Sunderland, who finds the two so innovative and essential to the investigation of Two Murders and Some serious thefts that he is determined, and says so, that whenever they can he desires them to assist in future!
I so enjoyed this first book in the series I invested in the next four...so far!...in the series.
What fun...the women and now the Detective Inspector, as well, have such comical and engaging exchanges one finds herself (me) laughing so heartily she needs to pause and wipe her eyes repeatedly as she reads the story!
Would highly recommend this series to anyone who loves a good, well plotted mystery and a giddy, heartfelt laugh...well, series of laughs, at the same time.
Dialogue is often funny...though murder and mayhem are not!...and this is a careful blend of both....just sayin'.
What a wonderful edition to a huge genre of cozy and some not so cozy mystery books.
I recommend this series.
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Reviewed in the United States on June 7, 2024
★★★★★ 5
a quiet life???
This is a short story collection like Sir Arthur Conan Doyle and Agatha Christie have for Holmes and Poirot/Marple.
The characters remind me of the Phryne Fisher books. There are four stories in Book 1
A Quiet Life in the Country
Lady Emily Hartcastle and her maid Miss Florence Armstrong are enjoying some time in the country in the small
town of Littleton Cotterell when they come across a dead body. They find out that it is Frank Pickering, a local man
and it is thought that he committed suicide. But investigating, it seems that he has been murdered. Who
did it and why?
The Circus comes to town
Lady Hartcastle meets an old friend George who is the manager who for a circus that has come to
town. The next day, the juggler Hubert 'Huey' Parving is found dead mawled in a cage and then
others began to die. Who is behind this?
The Case of the Missing Case
Lady Hartcastle and Flo go to the engagement party of young Clarissa Farley-Strouds. The
next day, Nelson Holloway, the trumpet player with that night's entertainment - Roland Richman's
Ragtime Revue. Who killed him? As they investigate, the clues lead them to possible cursed
stolen jewel.
The Half-Death of Gunther Ehrlichmann
Florence recounts her life before and after meeting Lady and Lord Hartcastle as she and
Lady Hartcastle along with Lady Hartcastle's brother hunt down a killer.
Each story is tied into the other, but exciting! Must read!
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Reviewed in the United States on May 20, 2016
★★★★★ 5
Great read!
Format: Kindle
Absolutely enjoyable read. Great characters, can't wait for their next adventure!
If you like enjoyable fast reads a good mystery and some delightful laughs this series is for you!
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Reviewed in the United States on April 12, 2026
★★★★★ 4
Fun Seeing Where it All Begins for the Fantastic Amateur Detecting Duo
Format: Audiobook
I started with book three in this series, progressed forward, and finally took the opportunity to go back and get the first book in the series. The whimsical, cozy mystery paired with historical Edwardian setting was light and whimsical.
Actually, when I started listening, I realized that the first book introduced Lady Hardcastle and her ladies' maid, Florence Armstrong along with their new home and the other regular characters, in such a way that it didn't feel like the first book so much as the first of the stories that had been recorded. There are hints of their unusual, dangerous work abroad and no big explanation why the pair happened to be set upon 'a quiet life in the country' or why Lady Hardcastle and Florence have a relationship that is nearly family rather than an employer and servant from separate classes. The author trickles out the details and the reader/listener must catch them and piece them together as they go. Because I had experienced later books, those pieces stuck out easily to me. The meeting with Inspector Sunderland and the local villagers and neighborhood was fun.
There are two murder mysteries that have interesting crossover people and facts. One seems to involve a dead man from the village cricket team whose death was meant to appear like a suicide and then later, the death of a rag-time band trumpeteer that played at the engagement party of the local squire's daughter. A theft is tossed in for good measure.
I figured out one of the murders and part of the theft and the second murder, but the ultimate solution took me by surprise. Loved seeing the intrepid Flo able to get in some of her martial arts ability and spend time trailing along as they teased out the solution along side Inspector Sunderland.
Elizabeth Knowelden is an absolute gem of a narrator and the voice of this series for me. She laid out the Edwardian country village world, the variety of genders and accents, and kept the pace and tone for this series just right.
All in all, I thought this first entry was as fabulous as the later books and do not hesitate to put it out there as a good bet for historical cozy mystery lovers.
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Reviewed in the United States on March 22, 2019
★★★★★ 5
Must read!!!!
Format: Paperback, Format: Paperback
Surprise plot intertwined with story of loss, grief, family and sibling relationships. The book starts off normally and twists and turns. Could not put book down. Great writing and plot development. Can’t wait to read more by this author.
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Reviewed in the United States on May 25, 2026