Milltek 80mm OPF Back Exhaust | BMW G8X M3 M4 - Carbon Fibre Tips

Description

Milltek OPF/GPF-back exhaust system for BMW G8X M3 and M4 (2021+). Direct factory fitment with centre resonator bypass and CNC-formed JET-115 carbon fibre trims. OE gasoline particulate filter remains in place; system mounts downstream. T304L stainless steel, mandrel-bent construction throughout. Hand-finished welds. System engineered to restore acoustic character lost through OE particulate filtration while maintaining full emissions compliance. Centre resonator bypass refines mid-range tone; full-throttle note tuned for the S58 engine architecture. • T304L stainless steel, mandrel-bent pipes • OE hangers and mounting points - no modification required • Centre resonator bypass system included • CNC carbon fibre tailpipe trims (JET-115 spec) • OE particulate filter compatibility (cutting of OE silencer required) • Decibel-tested for full-load character • EC type-approved construction Milltek develops OPF-back systems to balance OE+ acoustic engineering with emissions regulations. Where OE systems sacrifice tone for particulate capture, this system reclaims the B58/S58 soundtrack without sacrificing filter function. Fits OE system. Designed and manufactured in the UK with 40+ years of performance exhaust heritage. Tested at the Nurburgring.

Fits 14 vehicles including:

• 2021 BMW M3— G80 M3 & M3 Competition S58 3.0 Turbo > 2021 and Later
• 2022 BMW M3— G80 M3 & M3 Competition S58 3.0 Turbo > 2021 and Later
• 2023 BMW M3— G80 M3 & M3 Competition S58 3.0 Turbo > 2021 and Later
• 2024 BMW M3— G80 M3 & M3 Competition S58 3.0 Turbo > 2021 and Later
• 2025 BMW M3— G80 M3 & M3 Competition S58 3.0 Turbo > 2021 and Later
• 2026 BMW M3— G80 M3 & M3 Competition S58 3.0 Turbo > 2021 and Later
• + 8 more vehicles