Bull-X Integral Insulated Decat Downpipe For Audi RS4 RS5 B9

These Bull-X downpipes can be exchanged 1:1 against the standard trouser tubes. The available catalytic converters offer higher exhaust gas transmission and lower exhaust back pressure, resulting in increased power, lowering the exhaust gas temperature and relieving the load on turbochargers.

This is further supported by the increased pipe diameter of 121-101mm and the omission of the second catalyst.

The downpipes run from the original turbo flange to 121mm, then further to 101mm and are only reduced to 76mm directly on the original flange.

Ideal also for performance-enhanced vehicles.

In addition, after the assembly of these downpipes, a sound plus (sound change) can be recorded. Especially in combination with a sports exhaust system.

- OEM downpipes have each installed 2x Kats, the Bull-X Downpipes are equipped with a maximum of one Cat- incl. integral insulation
- Material: Stainless steel
-Completely TIG welded
-clearly audible Soundplus (also with OEM exhaust system)
-when selecting the Kat variant "with HJS 200 cells Euro6 Kat" no software adjustment is necessary / no error message of the Kat control appears e

This article is not allowed for use on public roads - use only for racing purposes! 😉

These Bull-X downpipes can be exchanged 1:1 against the standard trouser tubes. The available catalytic converters offer higher exhaust gas transmission and lower exhaust back pressure, resulting in increased power, lowering the exhaust gas temperature and relieving the load on turbochargers.

This is further supported by the increased pipe diameter of 121-101mm and the omission of the second catalyst.

The downpipes run from the original turbo flange to 121mm, then further to 101mm and are only reduced to 76mm directly on the original flange.

Ideal also for performance-enhanced vehicles.

In addition, after the assembly of these downpipes, a sound plus (sound change) can be recorded. Especially in combination with a sports exhaust system.

- OEM downpipes have each installed 2x Kats, the Bull-X Downpipes are equipped with a maximum of one Cat- incl. integral insulation
- Material: Stainless steel
-Completely TIG welded
-clearly audible Soundplus (also with OEM exhaust system)
-when selecting the Kat variant "with HJS 200 cells Euro6 Kat" no software adjustment is necessary / no error message of the Kat control appears e

This article is not allowed for use on public roads - use only for racing purposes! 😉

These Bull-X downpipes can be exchanged 1:1 against the standard trouser tubes. The available catalytic converters offer higher exhaust gas transmission and lower exhaust back pressure, resulting in increased power, lowering the exhaust gas temperature and relieving the load on turbochargers.

This is further supported by the increased pipe diameter of 121-101mm and the omission of the second catalyst.

The downpipes run from the original turbo flange to 121mm, then further to 101mm and are only reduced to 76mm directly on the original flange.

Ideal also for performance-enhanced vehicles.

In addition, after the assembly of these downpipes, a sound plus (sound change) can be recorded. Especially in combination with a sports exhaust system.

- OEM downpipes have each installed 2x Kats, the Bull-X Downpipes are equipped with a maximum of one Cat- incl. integral insulation
- Material: Stainless steel
-Completely TIG welded
-clearly audible Soundplus (also with OEM exhaust system)
-when selecting the Kat variant "with HJS 200 cells Euro6 Kat" no software adjustment is necessary / no error message of the Kat control appears e

This article is not allowed for use on public roads - use only for racing purposes! 😉