Bull-X Downpipes incl. integral insulation Audi RS6/RS7 C8/4K 4.0 TFSI quattro 600HP | 100-cell sport catalytic converter (HGDPVAG007-1)

These Bull-X downpipes can be exchanged 1:1 against the oem downpipes and they provide a higher exhaust gas flow rate, what results in less exhaust back pressure, improved efficiency and lower exhaust gas temperature, which additionally relieves your turbochargers.

Also ideal for performance-increased vehicles.
In addition, a sound plus (sound change) is noticeable after fitting these downpipes. Especially in combination with a sports exhaust system or e.g. the Bull-X front silencer replacement pipes for RS6/ RS7 C8/4K.

- Incl. Thermalal Insulation
- made of: stainless steel
- Completely TIG welded
- clearly audible soundplus (also with OEM exhaust system)
- All sensor connections included
- Pipe diameter: charger outlet 5″/121mm incl. cat/OPF dummy or sport cats depending on selection > to 4″/102mm and shortly before the flange to the OEM pipes tapered to 76mm

Note:
A software adjustment is necessary when installing this downpipe.
The temperature sensors as well as the differential pressure sensors must be programmed out and the tolerance values adjusted.

Vehicle Engine/ Power Engine code
Audi RS6 C8/4K Mild Hybrid quattro 4.0 TFSI 441kW/ 600HP DJPB
Audi RS7 C8/4K Mild Hybrid quattro 4.0 TFSI 441kW/ 600HP DJPB

Note for models with OPF:
A software adjustment is necessary when installing this downpipe.
The temperature sensors as well as the differential pressure sensors have to be programmed out.
The downpipe is supplied without connections for these sensors to avoid unnecessary costs.

TÜV / ABE available upon request

We currently ship within Europe only.

If a part is not available, we will contact you with an estimated wait time.

If you wish to return a product after receiving it, we offer a 14-day returns policy. Custom-made products are not eligible for return, and return shipping is at the customer's expense. Full delivery and returns terms are on the “Delivery Information” page — the link is at the bottom of the page.

Products come with a warranty, detailed in a certificate included in the box.

To make a valid claim, you must prove the damage was not caused by you and that the warranty certificate is valid.

Full terms are on the “Terms & Conditions” page — the link is at the bottom of the page.