Our downpipe for the BMW B58 engines completely replace factory component replacing the factory catalytic converter with a high flow, 200 cell catalyst improving overall flow, turbo response and exhaust noise. Perfect for racing discipline classes which require a catalytic converter. Off-road competition use only. Check engine light may occur without an ecu tune and/or o2 spacer.
Our downpipes are constructed with 100% T-304 stainless steel and are designed to be completely bolt-on components requiring no added modification. All products are protected with a 1-year warranty against manufacturer defects. Off-road use only.
Material: T304 Stainless Steel
Color: Metallic. Surface Finish: Polish
Downpipe Spec: Complete bolt-on unit with 200 Cell High-Flow Catalytic Converter
Inlet/Outlet: 110mm ID /80mm ID. 2 x O2 Sensor Bung
Increase High Flow Air and Maximize Performance
TIG Weld for Strength and Durability
CNC Machine Flanges for Strong Solid Support
For 2017-UP BMW M240i
2016-2018 BMW 340i
2020-UP BMW M340i
2019-UP Toyota GR Supra
2018-UP BMW X5 3.0L Turbo (B58)
Remark: The catalytic converter does not comply with any Federal or California emissions regulations. These are not intended for street use
All Megan Racing Exhaust and Suspension products are deemed for "off-road use only"-- please check local laws regarding the modification of the exhaust systems by checking the vehicle code for your state. Many states are more stringent on exhaust modification laws and to pass SMOG. Please check your local laws.
All Megan Racing exhaust system components will alter and affect the vehicle's overall sound in pitch and volume. All to which is subjective in manner. Megan Racing will not claim responsibility and/or accept returns based on an individual's personal preference