Exhaust BMW 4 Series F32 / F33 / F36 (2013-2020)

For the BMW 4 Series F32 (Coupe), F33 (Convertible), and F36 (Gran Coupe) produced from 2013 to 2021, the main exhaust system options include stainless steel sport exhausts such as downpipes, center and rear silencers. These systems focus on enhanced sound quality, premium style with different exit designs (quadruple or round), and sometimes subtle performance improvements. They are compatible with diesel engines (420d, 425d, 435d) and petrol engines (420i, 428i, 435i).

The Active Sound System electronically simulates V8 or V6 engine sounds on diesel BMWs like the 418d, 420d, and 425d xDrive. It is a plug & play system, compatible with vehicle inspection and BMW warranty, providing no horsepower increase. It activates via the original button and analyzes engine RPM in real time. There are two versions available, depending on AdBlue compatibility. Professional installation is recommended.

Exhausts for the BMW 4 Series F32/F33/F36 are primarily made from stainless steel for corrosion resistance and durability. Popular designs feature polished or black gloss finishes and include details like carbon fiber inserts and twin or quadruple tailpipes for a premium, aggressive style.

• Stainless steel construction with precision engineering
• Options for black gloss or chromed tips
• Quadruple exits to emulate M4 style or elegant round tips

These systems are designed to seamlessly integrate with the vehicle's original layout, sometimes requiring mild modifications like pipe cutting.

Some components like downpipes are not road-legal as they are not homologated for emissions compliance and may require ECU remapping. However, other exhaust parts, such as the Active Sound System, are approved for technical control (inspection) and maintain factory warranty. Certain exhausts may demand cutting of the original pipe for installation, and others fit bolt-on without modification.

• Downpipes: Non-homologated, require remapping and careful attention to pollution norms
• Active Sound System: Road-legal and OEM warranty compatible
• Sport silencers: Mostly bolt-on, some require pipe cutting

Confirm compatibility and legal compliance based on your vehicle’s engine and chassis number before purchase.

Upgrading the exhaust system enhances the vehicle's driving experience by:

• Providing a sportier and more aggressive exhaust tone, including simulated V8 sounds on diesel models
• Improving the exhaust gas flow which can subtly increase performance and throttle response
• Giving the car a premium and aggressive aesthetic with upgraded tip styles
• Ensuring durability and quality with premium stainless steel materials and expert design
• Maintaining compatibility with original vehicle systems and warranties (depending on component)

These enhancements enrich both visual appeal and auditory pleasure while driving.

Most sport exhaust components are designed for direct bolt-on installation, meaning they fit into the existing exhaust layout with minimal effort. However, some parts, like certain downpipes or sport silencers, may require cutting the original exhaust pipes for fitment.

• Professional or workshop installation is recommended, especially for parts requiring cutting or ECU remapping
• Some systems come plug & play for easy installation without tools
• Quality installation ensures proper fitment, sound balance, and avoids damage

Contact a qualified installer or authorized workshop for best results.

Compatibility depends on your vehicle’s chassis number, engine code, and model year. Key points include:

• Check your vehicle’s VIN or engine type (e.g., N20, N26, B47) when selecting exhaust parts
• Ensure that the exhaust system matches your diesel or petrol engine variant (e.g., 420d, 435i)
• Consult sellers or professional installers who can cross-check fitment with vehicle specifics
• Refer to manufacturer or distributor catalogs for compatibility details

Proper verification prevents installation issues and ensures legal compliance.

Krosfou offers a 3-year warranty on its high-quality stainless steel parts related to exhaust systems such as catalytic converters and DPFs (Diesel Particulate Filters). This warranty covers use up to 100,000 kilometers and requires professional installation following manufacturer guidelines. Support includes:

• Technical assistance via email for installation and product queries
• Free returns within 30 days if products are unused and in original condition
• Access to detailed catalog and compatibility information through the PRO account
• Direct factory support and fast delivery options

Krosfou prioritizes quality, reliability, and compliance with European standards to enhance customer confidence and driving experience.