Centre silencer replacement pipe for BMW X3 / X4 M40i
This centre silencer replacement pipe for BMW X3 and X4 M40i G3X / G4X non-OPF models optimises sound, flow and exhaust gas routing to motorsport standards. Removing the standard centre silencer creates a noticeably more direct, deeper and more emotional straight-six sound, whilst reducing exhaust back pressure.
Flow-optimised Full-Flow design
A key feature is the carefully designed pipe routing: the system uses a 3″ inlet and then transitions into a 2 × 70 mm pipe layout. This configuration provides:
- high exhaust gas flow without restrictions,
- optimised flow characteristics,
- reduced back pressure,
- clean distribution of the exhaust flow into both branches,
- improved throttle response and freer-revving engine performance.
Especially with the powerful B58 engine, this design provides ideal conditions for a highly free-flowing exhaust layout and a distinctive sound character.
Compatible with the standard exhaust system or EGO-X
A major advantage of this centre silencer replacement pipe is its versatile compatibility. It can be used with the standard exhaust system or together with the EGO-X exhaust system. The system is therefore suitable as:
- a sound upgrade for vehicles with the standard exhaust system,
- an addition to existing performance setups,
- the perfect extension for the EGO-X exhaust system, providing even greater flow and sound character.
When combined with EGO-X, it creates an especially uncompromising Full-Flow exhaust concept.
Motorsport sound with a precise fit
Manufactured from high-quality stainless steel and precisely matched to the vehicle, the pipe replaces the standard centre silencer with a direct-fit installation and integrates accurately into the existing exhaust system.
The result: more sound, more flow and more character.
Technical details
- Fits BMW X3 / X4 M40i G3X / G4X
- For 360 PS non-OPF models
- Replaces the standard centre silencer
- Inlet: 3″
- Outlet: 2 × 70 mm
- Compatible with the standard exhaust system and EGO-X exhaust system
- Flow-optimised design
- High-quality stainless steel construction
- TIG-welded
- Direct-fit installation
- Motorsport component
Benefits at a glance
- noticeably sportier straight-six sound,
- 3″ to 2 × 70 mm Full-Flow design,
- reduced exhaust back pressure,
- optimised exhaust gas flow,
- compatible with the standard system and EGO-X,
- improved throttle response,
- high-quality stainless steel construction,
- perfect fit for B58 models.
Road use: This product has no road approval and is not approved for use on public roads. It is intended exclusively for motorsport and export use.
Suitable for: BMW X3 III (G01), BMW X4 II (G02).
Manufacturer’s vehicle data
- MSD Ersatzrohr BMW X3 / X4 M440i G3X/G4X 360 PS non OPF Modelle
Original product name by HG Motorsport (»z.B.« = e.g.). Please check model, year and engine of your vehicle before ordering; if in doubt, contact us and we will check for you.
Approval
The manufacturer does not state an ECE, ABE or Teilegutachten approval for this part.
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