BMW X4 M Performance Exhaust - Dinan Freeflow Axleback (Polished), 2020–2025. Designed for the F98 X4 M, this axle-back delivers a deeper, sportier tone while preserving day-to-day refinement.

Constructed from 100% 304 brushed stainless steel with TIG welding, the system replaces the rear section with 76mm tubing (vs 70mm stock) for freer flow. Factory computer-controlled valves are retained and paired with enlarged 76mm hardware. Quad 114mm (4.5") double-walled polished tips feature an inverted clamp neck and tuck-it design so clamp hardware is largely hidden. Drone abatement within the can helps maintain cabin comfort. The assembly is about 5 lbs lighter than stock and has measured gains of +8 hp and +6 ft-lb at 6600 rpm. Signature straight-cut tips and laser engraving complete the look.

Features

• Fitment: 2020–2025 BMW X4 M (F98)
• Freeflow axle-back; 76mm piping (vs 70mm stock)
• Twin 76mm exhaust valves; ~30% less restrictive than OE
• Quad 114mm (4.5") polished, laser-engraved tips
• 100% 304 stainless steel; TIG welded
• Bolt-on installation; hardware included
• Approx. +8 hp / +6 ft-lb @ 6600 rpm; ~5 lbs lighter
• Retains factory valve control; drone abatement technologies

Have questions or want to schedule installation? Call our specialists. We offer installation and customization at our Austin, Texas and Los Angeles, California area locations: 512-982-9393 (TX), 562-981-6800 (CA).

Purchasing multiple items? Contact us for shipping discounts.

We install on premises at both locations.

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