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Performance Exhaust Upgrades for BMW M2 G87

MAD BMW S58 4″ Fat Boy Single Midpipe for M2 G87

SKU: MAD-136

$659.00

Out of Stock – Available January 14th, 2026

Transform your BMW G87 M2’s exhaust performance with the MAD S58 4″ Fat Boy Single Midpipe. Engineered for the high-revving S58 engine, this midpipe delivers unrestricted flow, sharper throttle response, and an intoxicating, deep, aggressive tone that turns heads on the street or track. Say goodbye to rasp and hello to pure power.

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Key Features & Benefits

Built for enthusiasts who demand the best, the Fat Boy Midpipe optimizes every aspect of your BMW M2 G87 exhaust system.

• Maximum Exhaust Flow: Full-length single 4″ center section with a minimum 3″ diameter throughout eliminates bottlenecks for superior performance.
• Enhanced Sound Profile: Deeper, smoother, and more aggressive exhaust tone with significantly reduced rasp—even when paired with aftermarket downpipes.
• Versatile Compatibility: Works seamlessly with both stock and aftermarket downpipes, plus includes 3″ and 2.75″ reducer couplers for factory or custom axle-back systems.
• Easy Installation: Utilizes the factory cut point and clamp system for a straightforward, reversible bolt-on upgrade.
• Precision Fitment: Includes an upgraded brace to ensure proper clearance and flawless integration with the larger pipe diameter.
• Track & Street Ready: Improves throttle response and overall drivability for daily commutes or high-speed pursuits.

Whether you’re tuning for more horsepower or just crave that signature BMW growl, the MAD Fat Boy Midpipe is your gateway to elevated driving dynamics.

Frequently Asked Questions

Is this midpipe compatible with my BMW M2 G87?

Yes, it’s designed exclusively for the S58-powered G87 M2 platform and works with both OEM and aftermarket downpipes.

How does it affect the sound?

It produces a deeper, more aggressive tone with less interior rasp, enhancing the overall auditory experience without drone.

What’s included in the kit?

The midpipe, 3″ and 2.75″ reducer couplers, upgraded brace, and all necessary clamps for installation.

Is professional installation required?

No, it’s a direct bolt-on using factory points, but we recommend a certified mechanic for best results.

When will it be back in stock?

Expected availability: January 14th, 2026. Sign up for notifications to be the first to know!

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