- Exhaust - 3" Performance Downpipe and Midpipe Combo w/ Downstream HFC (JHM) for D4 A8-S8 4.0T
Exhaust - 3" Performance Downpipe and Midpipe Combo w/ Downstream HFC (JHM) for D4 A8-S8 4.0T
JHM HD Linkage Cross Rod (Early) for B5-S4, C5 A6-allroad$199.95Add to Cart | Wishlist
JHM Supercharger Kit for B8-S5 w/ 4.2L FSI V8, Stage 1
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JHM 3" Performance Downpipe & Midpipe Combo w/ Downstream HFC (High Flow Cats) for the C7-D4 4.0T IS NOW AVAILABLE!
We are pleased to offer our JHM 3" Downpipe & Midpipe Combo. For those who are not interested in a full exhaust system and want more performance and exotic sound or plan on completing the exhaust system down the road, this is for you!
100% BOLT IN - NO CUTTING OR MODIFICATIONS TO YOUR STOCK CATBACK REQUIRED!
COMPATIBLE WITH FACTORY CATBACK AND JHM 3" VALVED PERFORMANCE CATBACK! (Coming Soon)
Why 3" Inch piping diameter? After much research, calculations, testing, and development we found that based on the 4.0T engine's demands, 3" piping diameter is the optimal size. With smaller than 3" downpipes you end up choking off the 4.0T's Turbos not allowing enough exhaust flow. 3" piping is the optimal sizing for these downpipes.
• High-Quality 304 Stainless Steel Piping
• High-Quality 304 Stainless Steel Transition Cones
• High-Quality 304 Stainless Steel Flex Couplers
• High-Quality 304 Stainless Steel Clamps
• High-Quality USA Made High Flow Cats
• Laser Cut Flanges
• In House Mandrel Bent Piping
• OE Fitment Quality
• 100% USA MADE
You can expect an increase in turbo performance with less turbo lag and more top-end power. Gains of 60HP and 95TQ can be seen with appropriate Stage 2 Software over Stage 1. Check out JHM tuning options, RS7-R turbos, turbo oil line filter relocation kit, Throttle Body hose kit, Heat Exchanger upgrade, and more
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Off-road use ONLY: THIS PRODUCT IS FOR RACING COMPETITION ONLY AND IS NOT LEGAL FOR USE IN HIGHWAY OR STREET VEHICLES OR OTHER NON-RACING COMPETITION OFF-ROAD VEHICLES. BY PURCHASING THIS PRODUCT YOU ACKNOWLEDGE ITS INTENDED USE.
|Audi||A8||D4-D4.5 (2011-Present)||4.0t V8 32v|
|Audi||S8||D4-D4.5 (2013-Present)||4.0t V8 32v|
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