Name: BMW M3 M4 G8X Z-Pipe GPF/OPF Bypass by Milltek Sport (2021+)
Brand: Milltek Sport
SKU: SSXBM1423
Price: 1749.95 EUR
Availability: InStock

Milltek Sport BMW M3 M4 G8X Z-Pipe GPF/OPF Bypass — fits Milltek axle-back

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BMW M3 M4 G8X Z-Pipe GPF/OPF Bypass by Milltek Sport (2021+)

SKU: SSXBM1423

€1.749,95

2-year warranty Fitment guarantee Genuine Milltek Sport

Usually ships in 3-5 working days. You will be contacted if there is a longer lead time.

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BMW M3 M4 G8X Z-Pipe GPF/OPF Bypass by Milltek Sport (2021+)

⚠️ OFF-ROAD / COMPETITION USE ONLY — NOT ROAD LEGAL
This product is designed for closed-course and competition use only. It is not road legal and must not be used on public roads. Installation and use are entirely at the customer's own risk.

The Milltek Sport Z-Pipe is a 3D printed 316L stainless steel crossover that merges exhaust pulses from the BMW S58's two cylinder banks. The result is a more exotic note with less rasp and reduced back pressure — under load the sound is cleaner and higher-pitched, and on deceleration the deep rumble and burble are more pronounced. The advanced 3D printing process keeps weight increase over a traditional X-Pipe minimal.

This system pairs a 102mm GPF/OPF bypass mid-pipe with the Z-Pipe crossover, available for Milltek or OE axle-back fitment. The Z-Pipe Upgrade Only variant is for existing Milltek mid-pipe customers upgrading from an X-Pipe, resonator or twin straight pipes — the Z-Pipe cannot be used on its own.

3D printed 316L stainless Z-Pipe crossover
102mm / 4" pipe diameter
GPF/OPF bypass for improved performance and sound
Available for Milltek or OE axle-back fitment
Engineered and manufactured in Nottingham, UK by Milltek Sport

Pipe Diameter: 102mm / 4"
Material: 316L Stainless Steel (Z-Pipe, 3D printed); T304 Stainless (mid-pipe)
Fitting Time: approx. 1.5–2 hours (Upgrade Only: approx. 1 hour)

BMW M3 Saloon (2021+, G80 S58)
BMW M3 Touring (2022+, G81 S58)
BMW M4 Coupe (2021+, G82 S58)
BMW M4 Convertible (2021+, G83 S58)

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