Supersprint 525711 BMW B58 Decat Downpipe / Catless Turbo Outlet OPF/GPF/PPF Front Pipe - Primary Cat Delete, Direct Fit Stage 2 for G30/G31 540i, G32 640i, G11/G12 740i, G01 X3 M40i, G02 X4 M40i, G05 X5 40i, G07 X7 40i

Supersprint B58 De-cat Front Pipe for OPF and GPF Vehicles - Part No. 525711

Looking to release real performance from your B58-powered BMW with an OPF or GPF? This Supersprint turbo outlet front pipe replaces the factory primary catalyst section with a free-flow de-cat solution. It is a direct bolt-on upgrade that uses the original lambda sensor positions and mounting points for a clean, factory-style installation. Part number: 525711.

Engineered by Supersprint to maximise gas velocity and reduce back pressure, this front section sharpens throttle response, helps the turbo spool faster and brings a more characterful, motorsport-inspired soundtrack. A premium flex joint is integrated to allow controlled movement of the drivetrain and protect the rest of the exhaust system from vibration and stress. It is the cornerstone hardware piece for B58 tuning, ideal as the base for a Stage 2 calibration and further breathing mods.

We have fitted this unit to multiple customer cars and it has proven consistently excellent for fitment quality, performance feel and reliability. The threaded boss for the oxygen sensor is included.

Why choose this upgrade

• Direct replacement front pipe for B58 OPF and GPF-equipped models
• Bolt-on fitment with OEM-position O2 ports and brackets
• Optimised internal volume for superior flow and turbo response
• High quality flex section to protect the rest of the system
• Perfect foundation for Stage 2 tuning and performance exhaust packages
• Supersprint reference: 525711

Vehicle fitment

For Euro 6 petrol particulate filter models using the B58 engine, including:

• BMW 5 Series G30 540i and 540i xDrive - OPF models
• BMW 5 Series G31 540i xDrive Touring - OPF models
• BMW 5 Series G38 540Li - OPF models
• BMW 6 Series G32 640i GT and 640i xDrive GT - OPF models
• BMW 7 Series G11 740i and 740i xDrive - OPF models
• BMW 7 Series G12 740Li and 740Li xDrive - OPF models
• BMW X3 G01 M40i - OPF models
• BMW X4 G02 M40i - OPF models
• BMW X5 G05 xDrive40i - OPF models
• BMW X7 G07 xDrive40i - OPF models

Please ensure your vehicle is OPF or GPF equipped before ordering.

Fitting and support

Professional installation is recommended. For fitting, speak to MJ Modifications in Warwickshire. For a tailored quote or booking, email info@mjmodifications.co.uk.

Warranty

Manufacturer: Supersprint. Warranty: 1 year from Supersprint.

Important information

De-cat front pipes are intended for motorsport and off road use only. Check local regulations before use on public roads.

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