VRSF 4.5" Cast Stainless Steel Downpipe | G01 X3 M40i · G02 X4 M40i Variant:Catless (Track Limited Racing) Cleaner Intake Valves

Cleaner Intake Valves

it's time for a refresher

Engineered as the ultimate downpipe solution for your Audi B9/B9

Stage 1 E30 octane: 31% HP / 41% TQ

Combining our high-quality core with the increased total volume

VRSF 4.5" Cast Stainless Steel Downpipe | G01 X3 M40i · G02 X4 M40i Variant:Catless (Track Limited Racing) Cleaner Intake ValvesWe are proud to introduce our VRSF race & catted downpipe for your B58 X3 M40iX & X4 M40iX. This downpipe is THE best bang for the buck mod available. This downpipe is available in both race & catted configuration. Back pressure is significantly reduced by eliminating the restrictive catalytic converter in the factory downpipe with our race or high flow 200 cell race cat which results in faster spool, an increase in power & a more aggressive exhaust