B58 4.5" Downpipe Downpipe Configuration:4.5" GESI Gen 2 Catalyst Up to 425WHP - Garrett

Up to 425WHP - Garrett G25-550

and relentlessly tested over more than a year to ensure every possibility for improvement was realized

6 A/R housing volute

5" upper downpipe

B58 4.5" Downpipe Downpipe Configuration:4.5" GESI Gen 2 Catalyst Up to 425WHP - GarrettOur first B58 Product is now finally live. It may seem excessive, but we spent a better part of a year running this downpipe on our own M240i to ensure performance, reliability, avoidance of CEL's is guaranteed. While the market for B58 downpipes is addmitedly saturated, the craftsmanship of our OEM fitment B58 downpipe simply cannot be beat. In a sea of rebranded offshore downpipes and overpriced options with mediocre fabrication and welding, our