For over 30 years, Active Autowerke has been the one to turn to for high-quality BMW performance products. Committed to enhancing the performance of BMWs through the highest quality products is what Active Autowerke is all about. The newest addition to our BMW F90 M5 Collection, these S63TU downpipes represent our outlook on creating innovative products with performance in mind.
The downpipes are strategically engineered to virtually eliminate the immensely restrictive characteristics of the factory M5 downpipes, therefore, reducing radiant heat and increasing performance. Our M5 downpipes will significantly increase horsepower and torque throughout the powerband. They will reduce any turbo lag
Our F90 M5 downpipes are manufactured in-house using 304 stainless steel. Each set is meticulously tig welded and checked for perfect fitment. Our design uses a factory-matched 3.5" v-band inlet that tapers to a high flowing, mandrel bent" body and includes the lower section sold by others as a "mid-pipe".
**Our downpipes allow the use of the OEM O2 sensor heat shield. With the heat shield installed the engine bay remains stock-looking for a sleeper look!
This variant includes a pair of 4.5" high flow GESI catalytic converters that will NOT produce a CEL!
The GESi G-Sport Ultra High Output Catalytic Converter features full 304 stainless steel construction, including the substrate. GESi UHO-Series Catalytic Converters are EPA registered and compliant in 49 states and fully OBD2 compliant, perfect for use on 1996 and newer vehicles. GESi proprietary precious metal loading technology ensures greatly reduced emissions, eliminating most "Check Engine Lights". These high-flow catalytic converters outperform stock converters and provide a reliable solution to the most common catalytic converter problems.
FEATURES:
- NO CEL when using this downpipe
- GESI EPA registered high flow and fully OBD2 compliant
- Casted upper stainless steel V-Band for precise fitment
- 4.50" diameter piping allows for maximum power output
- Quicker turbo spool
- Rated for 500 to 850 hp applications
- Withstands up to 1500 F
- Can reach operational efficiency within 9 seconds of startup
- Easily bolts-on no cutting or welding required
- Durable construction from TIG welded 304 stainless steel
- Ultra high flow 400 cells per square inch catalyst
- EPA compliant for use on OBD2 vehicles (1996 and newer) except in California
- 304 stainless steel substrate is furnace braised to the mantle for outstanding durability
- GESI proprietary precious metal loading technology ensures greatly reduced emissions
- Ideal for Forced Induction Applications with no loss of HP
- Both passengers and drivers are safe from harmful emissions and noise
- Covered by 5 Year / 50,000 Mile Warranty (on shell and tube ends) and 25,000 Mile Warranty on the Catalytic core
- Made in Miami, Florida
VEHICLE FITMENT CHART:
| MAKE | MODEL | CHASSIS | YEAR |
| BMW |
M5/M8 |
F90 |
2019+ |