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and F83 M4 are similar to the brake air ducts found on the factory GT4 race car
Valved muffler with wireless controller (you can also use stock valves)
making it an ideal upgrade for both street and performance-focused builds
No cutting or modifications required — installs quickly and securely
This protects the carbon fiber from fading or discoloration
BMW M340i/M440i G2X B58 Cen-Cal Valved Stainless Steel Catback Exhaust F8X and F83 M4 are similarBMW M340i M440i G2X Cen Cal Valved Stainless Steel Catback Exhaust Exceptional Sound and Performance Upgrade your BMW M340i or M440i with the Cen Cal Valved Catback Exhaust, crafted from premium stainless steel. Designed for enthusiasts who demand superior sound, quality, and fitment, this exhaust system combines dynamic sound control with a sleek, aggressive aesthetic, all at a competitive price. Key Features: 1. Valved Muffler System for
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