BMW F30/F31 Valved Cat-Back Quad-Tip Exhaust System – Fits Sedan & Touring Models with N20/N26 Engine | Select Quiet or Loud Sound, Premium Performance Upgrade

Unlock the true personality of your N20/N26-powered 3 Series with the BAVMODS® Quad-Tip Valved Cat-Back Exhaust System, engineered for the BMW F30/F31 Sedan and Touring. This system delivers a perfect balance of everyday refinement and weekend aggression — complete with a bold quad-exit layout that instantly elevates your car’s rear profile.

Whether you’re after deeper tone, improved throttle response, or a sportier stance, this cat-back brings all three together in a precision-built, OEM+ package.

Dual-Mode Valve Control: Quiet or Loud on Demand

Take control of your exhaust note with a valve-actuated system that lets you switch between two distinct sound modes:

• Quiet Mode (Valves Closed): A refined, subtle tone ideal for daily driving or early-morning starts.

• Loud Mode (Valves Open): A sharp, aggressive sound with pronounced turbo spool, deep growl, and exhilarating overrun burbles.

With the push of a button, your F30 or F31 transforms from composed cruiser to head-turning performer — all while maintaining OEM-level fitment and drivability.

Designed for Performance Flow & Aesthetic Impact

This system enhances both flow efficiency and visual appeal. The redesigned exhaust path reduces restriction for improved exhaust velocity and throttle response, while the quad-tip rear section gives your 3 Series the sporty look it deserves.

Each tip is positioned for a symmetrical, performance-inspired finish — perfectly aligning with M-style or aftermarket diffusers for an aggressive, track-ready appearance.

The internal muffler layout balances tone and backpressure, ensuring strong midrange torque and smooth acceleration across the RPM band.

Key Features & Benefits

• Quad-Tip Layout – Instantly transforms your rear-end design with an aggressive, performance-driven appearance.
• Dual-Mode Valve Control – Switch between quiet cruising and open-valve aggression at any moment.
• Enhanced Flow Dynamics – Freer exhaust flow for sharper throttle response and improved performance potential.
• Aggressive Yet Controlled Tone – Deep, resonant sound when opened, refined and subtle when closed.
• Plug-and-Play Installation – Direct bolt-on fitment using factory hangers and mounts.
• OEM+ Design Language – Seamless integration with stock or M-style rear diffusers.

Included Components

• Complete valved cat-back exhaust system (mid-pipe + rear section)
• Quad exhaust tips – available in polished, chrome, or black finishes depending on variant
• Valve control module or remote toggle system
• Mounting hardware, clamps, and gaskets

Performance & Sound You Can Feel

The BAVMODS® Quad-Tip Valved Cat-Back Exhaust System brings out the best of the N20’s turbocharged character.

With valves closed, it hums with a smooth, OEM-like tone. Open them up, and your 3 Series comes alive — delivering a deep, commanding sound that perfectly complements the bold quad-exit look.

Expect:

• Deeper, more refined tone under load
• Improved exhaust flow for enhanced response
• Aggressive rear-end presence with quad tips
• Balanced sound control for daily comfort or spirited driving

This is more than just an exhaust — it’s a statement of performance and precision, built for those who demand both form and function.

FITMENT: BMW 3 Series – F30 / F31 (2012–2019) including F30 Sedan – 320i, 328i, 330i (N20/N26 engines) F31 Touring (Wagon) – 320i, 328i, 330i (N20/N26 engines).

*Compatible with RWD and xDrive variants

*Not compatible with F34 Gran Turismo models

IMPORTANT NOTE: All exhaust systems are custom fabricated to order. These are not generic third-party exhausts — our team handles each system in-house, and you’ll be able to see the craftsmanship immediately upon unboxing.

While materials are sourced worldwide, all final metalwork, quality assurance testing, and fitment/mounting verification are completed at our facility in Texas, United States.

Because of the extensive labor involved and the high cost/risk of return shipping exhaust systems, full returns are not accepted. However, if there is ever a verified fitment issue, we will 100% stand by our guarantee and, with proper documentation, make sure you are taken care of.

Please note: once an order is placed, if we are not contacted within 24–48 hours of order placement, cancellations cannot be promised.

Each exhaust unit takes approximately 2–3 weeks for full fabrication. Once fabrication is complete and the system is in quality assurance testing, we will send detailed photos of your exhaust for you to review and approve so you feel fully confident before it ships.

Please refer to the “Fitment” section in the product description for compatibility details.