Racing Dynamics Catted Downpipe - B58 G2x M340i/M440i
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This product was last offered at the strikethrough price on
05-19-2026
Lifetime Replacement Program! Read more here
Product Details
Catted Downpipe by Racing Dynamics for B58 Powered G2x M340i/M440i including Xi models.
These parts are intended for off road or track use only!
This product is sold for off road use only. It is not legal for use on public highways. This product is not for sale or use in California. It is available to our international customers for use within legal limits in their area of residence.
Features:
- Reduction in turbo lag
- Less stress from the turbocharger
- Up to 25hp increase from stock when paired with a proper tune
- Direct bolt-on replacement for OEM
- Large 4 1/2" inlet flange, 4" mandrel bent downpipe manufactured out of 304 stainless steel, TIG welded with brushed finish.
- Straight-through tubing section replaces the heavy and restrictive OEM catalytic converters for maximum power and sound
- Includes flex joint to reduce vibration from the engine and allows alignment during installation
- Downpipe includes a 200 cell Euro 5 sport catalytic converter for a cleaner environment
Not for sale or use in the state of California on any pollution-controlled vehicle as per the California Air Resources Board.
Prop 65 Warning
- 130 10 58 360
