Milltek

Milltek Sport Secondary Cat-Back Exhaust System with Centre Resonator Bypass - BMW M4 G82/G83

Name: Milltek Sport Secondary Cat-Back Exhaust System with Centre Resonator Bypass - BMW M4 G82/G83
Brand: Milltek

MPN: MTK-SSXBM1320

Set your vehicle to confirm fitment — see full vehicle fitment

From $4,922.00

Where to buy

FCP Euro$4,922.00
Backorder
Free shipping over $49Price confirmed Oct 11, 2026View (opens FCP Euro in a new tab)

Overview

Hard install

Secondary cat-back exhaust system for 2021 BMW M4 (G82/G83) featuring a centre resonator bypass and GT-115 burnt/blue titanium exhaust tips. Manufactured from T304L stainless steel for superior durability and corrosion resistance. EC-approved and TUV-tested performance system designed to optimize exhaust flow while reducing emissions. Requires cutting of the OE exhaust system for installation. Includes all necessary pipes, mufflers, resonators, and mounting hardware.

Specifications

Type: Cat-Back
Tip Style: Quad burnt/blue titanium (GT-115)

Vehicle Fitment
1 configuration

BMW M4(G82)— Competition
S58
2021

Installation summary

Advanced DIY skills are required for this installation, making it best suited for experienced mechanics or dedicated enthusiasts with access to a lift. The procedure requires cutting the original equipment exhaust system, as well as carefully handling factory O2 sensors and ensuring proper heat shield clearance throughout the undercarriage. When mounting the system and the GT-115 burnt titanium tips, allow all components to cool completely before performing final torque checks to prevent alignment shifts.

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

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