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5" secondary for maximum scavenging and exhaust flow
Here's Why the Stock Manifold Chokes the Engine
Increase Turbo Boost to Improve Vehicle Performance
Impact Resistant Textured Black Powder Coat
unobstructed interior for a 21 percent reduction in airflow restriction
ARM Motorsports S58 Catted Downpipes - BMW M2 / M3 / M4 (Incl. xDrive; G8x) 2021-2026 Add Crossover Pipe?:No Thank You 5" secondary for maximum scavengingHIGHLIGHTS Increase Power and Torque Faster Turbo Spool Exotic Exhaust Sound SS304 Stainless Steel PROFILE The ARM S58 Catted Downpipes increase power and torque on your S58 powered BMW while unleashing exotic sounds from your tailpipes. The ARM S58 Catted Downpipes are one of, if not the best all around hardware upgrades for the G8X platform. The ARM S58 Catted Downpipes improve throttle response throughout the RPM range while stepping up the exhaust
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