Milltek Sport BMW G8X M3/M4 OPF/GPF-Back Exhaust System

Upgrade your BMW G8X M3 or M4 with the Milltek Sport OPF/GPF-Back Exhaust System with Centre Resonator Bypass.

Designed specifically for the BMW S58 3.0 Turbo platform, this Milltek Sport system is engineered to enhance the exhaust sound while retaining the factory OPF/GPF system. The centre resonator bypass helps overcome some of the sound-suppressing characteristics of the factory particulate-filter-equipped exhaust system, delivering a more pronounced and sporty exhaust character.

The system features an 80 mm pipe diameter, valved exhaust components and GT-115 Brushed Titanium exhaust tips.

Milltek Sport designs and manufactures its performance exhaust systems in the UK and distributes its products worldwide.

Key Features

• Genuine Milltek Sport exhaust system
• Designed for BMW G80/G81 M3 & M3 Competition
• Designed for BMW G82 M4 & M4 Competition
• BMW S58 3.0 Turbo
• OPF/GPF-back configuration
• Centre resonator bypass
• 80 mm pipe diameter
• Valved exhaust system
• GT-115 round brushed titanium exhaust tips
• Designed to enhance exhaust sound
• Retains the factory OPF/GPF system
• UK-manufactured by Milltek Sport
• Professional installation recommended

Fitment

BMW G80/G81 M3 & M3 Competition

S58 3.0 Turbo

• 2021+ North American / ROW non-OPF/GPF vehicles
• 2020+ OPF/GPF-equipped vehicles
• Touring and xDrive models included where applicable

BMW G82 M4 & M4 Competition

S58 3.0 Turbo

• 2021+ North American / ROW non-OPF/GPF vehicles
• 2020+ OPF/GPF-equipped vehicles

Components Included

• Chassis Brace Plate — F7096
• LH Valved Link & Outlet Pipe — MSBM355
• RH Valved Link & Outlet Pipe — MSBM356
• Rear Silencer — MSBM357
• LH Silencer Bypass to OE GPF — MSBM434
• RH Silencer Bypass to OE GPF — MSBM435
• GT-115 Brushed Titanium Exhaust Tips — MSTIP252
• Milltek fitting kit — SSXBM1319

Installation

The factory/OE exhaust requires cutting for installation.

Milltek estimates approximately 1.5–2 hours for installation, including removal of the original exhaust system.

Professional installation is recommended to ensure proper fitment, alignment and sealing.

Please verify your vehicle's OPF/GPF configuration and model year before ordering.