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Aerodynamics by reduced air pressure buildup in the engine compartment
Redesign the rear look of your g2x 3/4 series or g8x m3 or m4 with a csl style carbon fiber trunk
Designed for drivers who demand both style and function
(All wing stands come in FRP for either option)
with the expertise of Rogue Engineering
MAD BMW S58 3.5'' FATBOY X3M & X4M F97 F98 Downpipes PR Aerodynamics by reduced air pressureTake your BMW X3M or X4M to the next level with the MAD 3. 5" FatBoy Catless Downpipes. Designed for enthusiasts who demand maximum performance, our latest FatBoy design features a massive 3. 5 inch diameter for significantly improved exhaust flow over traditional downpipes. ETA: Sept 2026 Engineered specifically for the S58 platform, the MAD FatBoy Downpipes reduce exhaust backpressure, allowing the turbochargers to spool faster, improve throttle
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