Milltek Sport BMW G8X M3/M4 - OPF/GPF Back with Centre Resonator Bypass System with GT-115 Polished Trims

Elevate the acoustic and visual presence of your BMW M3 or M4 G8X with the Milltek Sport OPF/GPF Back System with Centre Resonator Bypass, finished in polished GT-115 tips. This comprehensive exhaust upgrade combines the OPF/GPF-Back design with a centre resonator bypass for a dramatically enhanced exhaust note that truly reflects the performance potential of the S58 engine.

The centre resonator bypass eliminates the factory resonator, removing a significant flow restriction and contributing to a more linear, unrestricted exhaust note. Combined with the OPF/GPF-Back section — designed to compensate for the sound-dampening effects of the factory particulate filter — this system transforms the acoustic character of the M3 and M4.

Finished with classic polished GT-115 round exhaust tips, this system adds a premium finishing touch to the rear of the G8X. Compatible with all G8X variants including OPF/GPF-equipped European models, Non-OPF North American and ROW cars, M3 Touring, and xDrive models.

Manufactured from 304L aircraft-grade stainless steel and made in the UK.

• Fitment: BMW M3 G80/G81 (2020+) & M4 G82 (2020+) — OPF/GPF & Non-OPF variants
• Pipe diameter: 80mm
• Tip style: Polished GT-115 round tips
• Fitting time: 1.5–2 hours
• Made in the UK

SKU: SSXBM1319