Milltek Sport Secondary Cat-Back Exhaust System - BMW M4 G82 (2021)

Overview

Secondary cat-back exhaust system for the 2021 BMW M4 (G82) featuring a centre resonator bypass and GT-115 brushed titanium exhaust tips. Constructed from T304L stainless steel for superior durability and corrosion resistance. EC-approved and TUV-tested performance system (ISO9001:2015 certified) that optimizes exhaust flow for improved performance and efficiency. Requires modification of the OE exhaust system. Includes all necessary pipes, mufflers, resonators, and mounting hardware.

Installation summary

Advanced DIY skills are required for this installation, making it suitable for experienced enthusiasts with access to a lift and standard hand tools. The procedure involves cutting the original equipment exhaust system to fit the secondary cat-back components, alongside careful handling of existing O2 sensors and ensuring proper heat shield clearance throughout the undercarriage. Crucially, remember to allow the exhaust system to cool completely before performing final torque checks on all mounting hardware and the GT-115 brushed titanium tips to prevent heat-induced misalignment.

AI-generated overview — always verify against the official install instructions.