- Exhaust - Cat-Back - JHM B7-RS4 Stainless Steel 2.75 Inch w X-Pipe
Exhaust - Cat-Back - JHM B7-RS4 Stainless Steel 2.75 Inch w X-Pipe
JHM R Series Lightweight Flywheel (Chrome-Moly Forged) and Clutch Combo for B7-RS4
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Introducing the much anticipated JHMotorsports 2.75 Inch Cat-Back Exhaust System for the B7-RS4 4.2L FSI 32v V8!!!
Why 2.75 Inch piping diameter? After much research, calculations, testing and development we found that based on the 4.2L 32v V8 engine's demands, 2.75 Inch piping diameter is the optimal size. With a 2.5 inch exhaust you end up choking off the RS4's free spinning and high-revving V8. We have also found with a 2.75 inch cat back that torque is not sacrificed for power gains in the top end of the RPM band.
Why an X-pipe? Naturally Aspirated V8s always make more power with an X-pipe. The location and size of the X-Pipe in the JHM B7-RS4 Cat-Back Exhaust System has been meticulously researched and developed to produce the best scavenging of the exhaust pulses coming from either side of the motor. The location of our X-Pipe also gives the 32-valve V8 motor a cleaner, more refined tone.
JHM B7-RS4 2.75 Inch Exhaust X-Pipe:
JHM B7-RS4 2.75 Inch Exhaust System Build Quality: Our B7-RS4 Exhaust Systems are made entirely of stainless steel and crafted with the utmost attention to detail:
Parts Included: Our complete 2.75 Inch Cat-Back Exhaust System with dual 2.75 inch stainless steel piping includes the following:
- X-Pipe Section (Resonated or Un-resonated)
- 2x free flowing mufflers
- 4x 2.75 Inch Clamps
- 2x Rear Hanger Adjustment Clamps
- 1x Rear Section Adjustment Bar with Hardware
- Resonators: The JHM B7-RS4 2.75 Inch Cat-Back Exhaust System can be purchased with a RESONATED or UN-RESONATED X-Pipe section. Select your desired configuration from the dropdown menu below.
NOTE: If you are planning to use this system with stock downpipes or downpipes with a stock downpipe connection size you will need to purchase our downpipe connection reducers - SEARCH SKU: JHM-B7RS4CBRDCR
NOTE: IF YOU ALSO WANT TO PURCHASE OUR DOWNPIPES SEARCH SKU: JHM-B7RS4-DP
Note about build time and availability: Your JHM B7-RS4 2.75 Inch Cat-Back Exhaust should ship out in 3 - 6 weeks from the date it is purchased.
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|Audi||RS4||B7 (2006-2009)||4.2l V8 32v FSI|
- BEAUTIFUL sounding exhaust
- I recently purchased the resonated cat-back exhaust system and could not be happier with it. My RS4 is my daily driver so I was looking for an improvement in sound but not something that would wake my neighbors every morning. The JHM guys were great on the phone and helped me get exactly what I was looking for. It actually sounds so good that I think I might have to get the downpipes too now..... haha. Video of the before and after cold starts can be found on my Instagram account @audi.b7.rs4. Thank you JHM! Review by Mike (Posted on 12/23/2019)
By Purchasing any Off-Road use ONLY products from JH Motorsports, Inc. I acknowledge and understand the following disclosure. (This notice is located at the bottom of the page description of affected products on our website.)Vehicle Code § 27156:
(b) No person shall operate or leave standing upon a highway a motor vehicle that is required to be equipped with a motor vehicle pollution control device under Part 5 (commencing with Section 43000) of Division 26 of the Health and Safety Code or any other certified motor vehicle pollution control device required by any other state law or any rule or regulation adopted pursuant to that law, or required to be equipped with a motor vehicle pollution control device pursuant to the National Emission Standards Act (42 U.S.C. Secs. 7521 to 7550, inclusive) and the standards and regulations adopted pursuant to that federal act, unless the motor vehicle is equipped with the required motor vehicle pollution control device that is correctly installed and in operating condition. No person shall disconnect, modify, or alter any such required device.
(c) No person shall install, sell, offer for sale, or advertise any device, apparatus, or mechanism intended for use with, or as a part of, a required motor vehicle pollution control device or system that alters or modifies the original design or performance of the motor vehicle pollution control device or system. Health and Safety Code § 43000:
43001. The provisions of this part shall not apply to:
(a) Racing vehicles.
As the aforementioned code sections outline, it is against the law to operate or use a vehicle on public streets or highways with modified, altered, or disconnected motor vehicle pollution control devices. This may include but is not limited to, Evaporative Fuel Controls, Catalysts, DPF, PTOX, PCV Systems, Exhaust Gas Recirculation Systems, Oxygen Sensors, Thermostatic Air Cleaners, Air Intake Systems, Fuel Injectors, Regulators, Adjustable Cam Gears, ECU Programming, Mapping, or other Computer Modifications. Air Pumps, Air Injection, Timing, and any other Emission System Modification(s).
Purchaser acknowledges and certifies to JH Motorsports Inc., that Purchasers vehicle will only be used for racing applications or off road vehicle use only. Purchaser requests these modifications for the purpose of enhancing the vehicle for competitive Racing Applications and will not use this vehicle on public streets or highways. Purchaser agrees to indemnify JH Motorsports Inc., all employees, officers, owners, and subsidiaries for any civil or criminal liability arising out of use of Purchasers vehicle on public streets or highways as Purchaser has been duly notified of the laws and regulations regarding disconnecting, alteration, or modification of a vehicle’s pollution control devices. Purchaser understands and has been advised the driving of a vehicle on public streets or highways could result in criminal or civil penalties.
Warning: This product may contain a chemical known to the State of California to cause cancer, birth defects, or other reproductive harm.
Learn More: www.p65warnings.ca.gov