Abarth 500 Downpipes – Performance, Catted & Decat Exhaust Upgrades

Abarth 500 Downpipes – Unlock the True Potential of the Iconic Hot Hatch

The Abarth 500 is a legend in the world of compact performance cars, known for its aggressive styling, sharp handling, and turbocharged punch. But even this fiery hatchback has its limits with restrictive factory exhaust components. That’s where Abarth 500 downpipes come in. By replacing the OEM part with a free-flowing performance downpipe, you can unleash hidden horsepower, reduce turbo lag, and achieve the aggressive exhaust sound that defines the true Abarth spirit.

Why Upgrade to a Performance Abarth 500 Downpipe?

The stock downpipe in the Abarth 500 is designed with emissions and noise compliance in mind, which restricts airflow and robs the engine of potential power. A performance Abarth 500 downpipe improves efficiency, flow, and response. Benefits include:

• More horsepower and torque – increase turbo efficiency and overall output.
• Sharper throttle response – reduce turbo lag for instant acceleration.
• More aggressive sound – catted options deliver a sporty note, while decat downpipes provide raw motorsport sound.
• Lower exhaust gas temperatures – helps the turbo run cooler and last longer.
• Perfect tuning foundation – essential for ECU remaps and Stage 2 upgrades.

Types of Abarth 500 Downpipes

Not all downpipes are created equal. Depending on how you use your car, there are several different options:

Catted Abarth 500 Downpipes

Catted downpipes feature a high-flow sports catalytic converter that reduces emissions while improving flow. Perfect for daily drivers who want added power without triggering engine warning lights or risking MOT issues.

Decat Abarth 500 Downpipes

Decat downpipes remove the catalytic converter completely, giving your Abarth 500 maximum flow, aggressive exhaust tone, and uncompromised performance. This option is typically reserved for track cars or off-road use where emissions regulations don’t apply.

Sport Abarth 500 Downpipes

Sport downpipes are designed to strike a balance between power, comfort, and sound. With optimized diameter and smoother bends, they deliver noticeable performance improvements without making the car excessively loud. Perfect for enthusiasts who drive their Abarth 500 daily but still want extra performance.

Stainless Steel & Titanium Abarth 500 Downpipes

Stainless steel downpipes are the most popular option thanks to their durability and resistance to corrosion. For the ultimate upgrade, titanium downpipes offer lightweight construction, extreme heat resistance, and a premium motorsport appearance.

Abarth 500 Downpipe Performance Gains

One of the biggest reasons enthusiasts install Abarth 500 downpipes is the performance boost. Gains vary depending on whether you choose catted or decat, and whether your ECU is tuned. On average you can expect:

• +10–20 HP with a downpipe alone.
• +25–40 HP when combined with ECU tuning.
• Improved mid-range torque for stronger pull in everyday driving.
• Reduced turbo lag and quicker spool.

Diameter and Fitment Options

The right size Abarth 500 downpipe depends on your build:

• 2.5-inch downpipes – suitable for lightly tuned Abarth 500 models.
• 3-inch downpipes – perfect for cars running ECU Stage 2 or hybrid turbos.

Most downpipes are designed as direct bolt-on upgrades for easy installation, fitting the factory turbo and exhaust system without modification.

Build Quality and Design

High-quality Abarth 500 performance downpipes are built to last under extreme conditions. The best options include:

• Mandrel-bent tubing for smooth airflow.
• Thick-gauge stainless steel or titanium construction.
• Precision TIG welding for durability.
• OEM-style flanges for perfect fitment.

Daily Driving vs. Track Builds

Choosing between catted and decat downpipes depends on how you use your Abarth 500. If your car is primarily a daily driver, a catted downpipe gives you performance while remaining emissions-friendly. If you want a weekend toy or track car with maximum sound and power, a decat is the best option.

Tuning Potential

A performance downpipe is often considered a must-have upgrade for Stage 2 ECU remapping. By improving exhaust flow, it allows the ECU to run higher boost levels safely and efficiently. This means:

• Stronger top-end power.
• Improved mid-range torque.
• Better throttle response and drivability.
• Customizable exhaust tone depending on catted or decat choice.

Abarth 500 Downpipes and Motorsport

The Abarth heritage is built on racing, and performance downpipes are part of that DNA. Many Abarth 500 track cars run decat systems for maximum flow and power. Motorsport-grade stainless steel or titanium ensures reliability under extreme racing conditions and repeated heat cycles.

Conclusion

Installing a performance Abarth 500 downpipe is one of the most impactful modifications you can make. From improving horsepower and torque to unlocking a deep and aggressive exhaust tone, this upgrade transforms your small hot hatch into a serious performance machine. Whether you prefer the road-friendly balance of a catted downpipe or the raw power of a decat downpipe, upgrading your Abarth 500’s exhaust system is the ultimate step toward unleashing its true potential.