BMW 5-Series G30 Downpipes – Catted & Decat Performance Exhaust Upgrades

BMW 5-Series G30 Downpipes – Unlock the Full Potential of Your Executive Sedan

The BMW 5-Series G30, introduced in 2017, represents the seventh generation of BMW’s iconic executive sedan. With a wide range of powerful turbocharged petrol and diesel engines, the G30 combines luxury, performance, and cutting-edge technology. While the platform delivers excellent performance in stock form, the restrictive OEM downpipes limit your car’s full capabilities. Upgrading to performance BMW G30 downpipes is one of the most effective modifications to boost power, reduce turbo lag, and achieve a sportier, motorsport-inspired exhaust tone.

Why Upgrade to Performance BMW G30 Downpipes?

The factory-installed downpipes are designed for emissions compliance and comfort, but they restrict exhaust flow and reduce turbocharger efficiency. Installing high-performance BMW 5-Series G30 downpipes provides significant benefits:

• Increased horsepower and torque – improved exhaust flow reduces backpressure, unlocking hidden performance.
• Faster turbo spool – enjoy sharper throttle response and quicker acceleration.
• Enhanced exhaust tone – catted downpipes offer a refined sporty sound, while decat downpipes deliver an aggressive, motorsport-inspired roar.
• Lower exhaust gas temperatures – optimized flow improves thermal efficiency, protecting engine components.
• Perfect for ECU tuning – essential for Stage 1, Stage 2, and hybrid turbo upgrades.

Types of BMW 5-Series G30 Downpipes

Our selection of BMW G30 downpipes is designed for different tuning levels, driving styles, and performance goals:

Catted BMW G30 Downpipes

Catted downpipes feature a high-flow sports catalytic converter, combining emissions compliance with increased performance. Perfect for street-driven cars in regions with emissions regulations.

Decat BMW G30 Downpipes

Decat downpipes remove the catalytic converter entirely, maximizing exhaust flow for peak performance. Ideal for off-road or track-focused builds, or regions without emissions testing.

Material Options: Stainless Steel & Titanium

The material you choose impacts weight, durability, and thermal efficiency:

• Stainless steel downpipes – durable, corrosion-resistant, and cost-effective; suitable for most builds.
• Titanium downpipes – ultra-lightweight, exceptional thermal properties, and premium motorsport aesthetics.

Engine Compatibility

Our BMW 5-Series G30 downpipes are designed for a wide range of petrol and diesel engines:

• BMW 520i G30 Downpipes – optimized for the B48 2.0 turbo petrol engine.
• BMW 530i G30 Downpipes – designed for improved exhaust flow and efficiency.
• BMW 540i G30 Downpipes – engineered for the powerful B58 six-cylinder turbo engine.
• BMW M550i G30 Downpipes – tailored solutions for the N63 and S63 V8 twin-turbocharged engines.
• BMW 520d & 530d G30 Downpipes – high-flow diesel options for increased torque and reduced turbo lag.
• BMW 540d G30 Downpipes – optimized for dual-stage diesel performance builds.
• BMW M5 F90 Downpipes – extreme-performance solutions for the twin-turbocharged S63 V8.

Performance Gains with BMW G30 Downpipes

Installing performance BMW G30 downpipes provides immediate and measurable gains:

• +20–40 HP with the downpipe alone.
• +50–90 HP when combined with Stage 2 ECU tuning.
• Increased torque delivery for stronger mid-range acceleration.
• Sharper throttle response and reduced turbo lag.

Choosing the Right Diameter

Choosing the correct diameter is crucial to optimizing performance:

• 2.5-inch downpipes – perfect for Stage 1 tuning and lightly modified engines.
• 3-inch downpipes – recommended for Stage 2 setups, hybrid turbos, and high-boost applications.
• 3.5-inch downpipes – designed for extreme-performance applications, including M550i and big-turbo builds.

All our BMW G30 downpipes are designed for direct bolt-on installation, ensuring a seamless fit without cutting or welding.

Build Quality & Engineering

Each performance BMW G30 downpipe is manufactured using premium materials and advanced engineering techniques:

• Mandrel-bent tubing ensures smooth, unrestricted exhaust flow.
• High-quality stainless steel or titanium construction.
• Precision TIG welding guarantees strength and leak-free durability.
• OEM-style flanges and fittings ensure perfect integration.

Tuning Potential

Pairing your BMW G30 downpipes with ECU tuning unlocks their full potential:

• Substantial horsepower and torque increases.
• Optimized turbo boost and fuel mapping.
• Custom exhaust profiles depending on catted or decat configurations.
• Supports Stage 1, Stage 2, and hybrid turbo builds.

Daily Driving vs Track Builds

For everyday street driving, catted downpipes offer a refined upgrade balancing emissions compliance with improved performance. For motorsport applications, decat downpipes deliver maximum flow, aggressive sound, and peak power output.

Conclusion

Upgrading your BMW 5-Series G30 with performance downpipes is one of the most effective ways to increase horsepower, improve turbo response, and enhance exhaust tone. Whether you choose catted for everyday refinement or decat for track-ready performance, our range of BMW G30 downpipes guarantees premium quality, precise fitment, and proven performance gains. Transform your G30 today.