These lightweight test pipes (Cat delete downpipes) fit in place of the heavy OEM catalytic converters integrated into the downpipe. Using a test pipes removes the flow restriction a catalytic converter places on an exhaust system while increasing the horsepower.
The silencing effect of the converters are also removed, enhancing the aggressive engine sound. Test pipes are ideal for track days and race application. Lambda or Oxygen Sensor Bungs are pre-installed and threaded.
Capristo exhaust systems & components are engineered and manufactured utilizing advanced 3d laser-scanning, cad design, digital prototyping, and cnc-bending/milling at our factory in germany. Each system is made of high-grade t309 (1.4828) stainless steel and hand polished to a mirror finish. After extensive research, this specific alloy was chosen for its sonic resonance properties, low weight, and durability which are close to the properties of inconel (used in f1).
Recommended for off-road and track use only
Test pipes may trigger a cel (check engine light) to disable the cell you will need to mod/tune the ECU.
- Made of high-grade stainless steel
- Hand-polished to a mirror finish
- Ideal for track days and race application
- Naturally aggressive engine sound.
- Low weight, and durability
- 2015 Bmw F82 M4
- 2016 Bmw F82 M4
- 2017 Bmw F82 M4
- 2018 Bmw F82 M4
- 2019 Bmw F82 M4
- 2015 Bmw F83 M4
- 2016 Bmw F83 M4
- 2017 Bmw F83 M4
- 2018 Bmw F83 M4
- 2019 Bmw F83 M4
Images are for representation purpose only and may differ depending on the application.