BMW 4 Series Custom Cat-Back Exhaust

Transform the sound, appearance, and driving experience of your BMW 4 Series with a premium custom cat-back exhaust from Monaco Motorworks. Our systems are made for drivers who want an aggressive, refined exhaust note, premium construction, and outstanding value without the excessive markup often associated with high-end aftermarket exhaust brands.

Monaco Motorworks combines industry-leading pricing with knowledgeable, responsive customer service. Our team is available before and after your purchase to answer questions, review available configurations, and help ensure you receive the correct system for your vehicle.

VIN-Based Fitment Accuracy

Every exhaust is built to order using your vehicle’s VIN. This allows us to verify the factory configuration and produce the system for the highest possible fitment accuracy. Your VIN must be provided and confirmed before production begins.

• Vehicle-specific, made-to-order construction
• Aggressive yet refined exhaust tone
• Performance-focused sound and flow
• Competitive pricing backed by dedicated customer support
• VIN verification for precise fitment

Production and Material Options

Production Time: All exhaust systems are made to order. Please allow approximately 4-6 weeks for production before shipping.

Titanium Upgrade: Full titanium construction is available for an additional $650 upcharge.

Important: Final configuration, exhaust tip design, valve compatibility, emissions-equipment retention, and exact fitment may vary by vehicle. Customers with aftermarket downpipes, headers, body modifications, or a previously modified exhaust should contact Monaco Motorworks before ordering.

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