Evolve Catless Downpipes | BMW F87 M2 Competition | F80 M3 | F82/F83 M4 | S55

Evolve Catless Turbo Downpipes

BMW F87 M2 Competition | F80 M3 | F82/F83 M4

Improve exhaust flow, turbo response, and sound on your S55-powered BMW with the Evolve Catless Turbo Downpipes.

Designed to replace the restrictive factory catalytic downpipes, this system significantly reduces exhaust back pressure and allows the turbochargers to spool more quickly. The result is sharper throttle response, improved performance potential, and a deeper, more aggressive exhaust tone.

Constructed from stainless steel with TIG-welded joints and cast turbo-side connections, these 3-inch downpipes are built for strength, proper fitment, and reliable performance under demanding conditions.

The downpipes are designed to connect to the factory exhaust system or compatible aftermarket exhaust systems that retain the original downpipe connection points.

Product Features

• Catless turbo downpipe configuration
• Reduces restrictive factory exhaust back pressure
• Supports quicker turbo spool and improved response
• Deeper and more aggressive exhaust sound
• Stainless-steel construction
• Precision TIG-welded joints
• Cast turbo-side connection ends
• Three-inch pipe diameter
• Compatible with the stock exhaust system
• Compatible with aftermarket exhausts designed for factory downpipes
• Designed for BMW S55-powered vehicles
• Potential gains of approximately 60–70 bhp and 70–80 lb-ft of torque when combined with compatible Stage 2 tuning

Power gains are manufacturer estimates and can vary depending on tuning, fuel quality, supporting modifications, vehicle condition, and environmental conditions.

Vehicle Fitment

• BMW M2 Competition F87
• BMW M3 F80
• BMW M4 Coupe F82
• BMW M4 Convertible F83
• Vehicles equipped with the S55 engine

Important Notice

This product is not road legal and is intended for closed-course competition or off-road use only.

Removal of factory catalytic converters may cause a check-engine light, increased emissions, exhaust odor, and failure of state or federal emissions inspections. Proper tuning may be required.

The purchaser is responsible for confirming all local, state, and federal laws before ordering or installing this product.

Availability

Available to Order

Contact Uproar Customs for current availability and estimated lead time.

Installation

Professional installation by an experienced BMW technician is strongly recommended. New gaskets and mounting hardware should be inspected or replaced where necessary.

Uproar Customs does not provide installation instructions, tuning, emissions assistance, or technical support for self-installation.