Active Autowerke F8X M3 M4 Signature Exhaust System includes Active F - brace (11-045) 1807 the user can safely haul

the user can safely haul

Special Comments: Cast Iron Rotors 2014 McLaren MP4-12C Engine: 3

and features an optional auxiliary air inlet that pulls in additional air

improved fuel economy

Designed and Manufactured In House at STILLEN in the USA and inspected multiple times to ensure the highest standards of quality

Active Autowerke F8X M3 M4 Signature Exhaust System includes Active F - brace (11-045) 1807 the user can safely haulThe Active Autowerke F8X M3 M4 Signature Exhaust System is engineered for performance, combining durable 304 stainless steel construction with extensive R&D to optimize sound and flow. This modular turbo back system includes an Active F brace and requires a separate midpipe for full functionality. Mandrel bent 304 stainless steel with TIG welding for durability Flow efficient Y pipe design promoting exhaust scavenging and increased velocity True 3. 5"