Milltek OPF Back Exhaust - BMW G20/21 M340i & G22 M440i - OE Tips - SSXBM1157

Direct factory replacement OPF back exhaust system for BMW G20/21 M340i and G22 M440i models. Uses OEM tailpipe trims, requiring no modification to your vehicle. Hand-finished T304L stainless steel construction with mandrel-bent piping engineered for optimal flow and tone character across the rev range.

Available in multiple configurations to suit your performance and sound preferences. Each system is dyno-tested and designed as a complete direct replacement for the original equipment, maintaining factory fitment points and OE hanger compatibility.

• T304L hand-finished stainless steel construction
• Mandrel-bent tubing for optimized flow
• OPF-compatible, no secondary catalyst removal required
• Uses original BMW tailpipe trims
• Direct OEM+ fitment - no modification needed
• Multiple valve and resonance configurations available
• EC type-approved for European market

Engineered to deliver measurable performance gains while preserving the engineered tone character your M340i or M440i demands. Select your preferred configuration above to view system specifications and sound profile options.

Designed and manufactured in the UK with 40+ years of performance exhaust heritage. Tested at the Nurburgring.

Specifications

• Pipe diameter: 76.2mm (3.00")
• Fitting time: 2 to 2.5 hours, including removing the factory system
• E-marked for road use

Fitment

• BMW > 3 Series > G20 M340i Sedan inc Xdrive > 2021 and Later
• BMW > 4 Series > G22 M440i Coupe (NAS/ROW Vehicles Only) > 2021 and Later

• Free US shipping on orders over $250.
• Free pickup at our Dallas shop, usually ready within 24 hours.
• Unused parts can be returned within 30 days. Tunes, opened electronics, merch and installed parts are final sale.
• Want it installed? Book the install at thegbmotors.com.

Full details are on our shipping and returns page.