BMW F30/F31 Valved Cat-Back Dual-Tip Exhaust System – Fits Sedan & Touring Models with B48 Engine | Select Quiet or Loud Sound, Premium Performance Upgrade

Unleash your 3 Series’ true character with the BAVMODS® Dual-Tip Valved Cat-Back Exhaust System, engineered for the B48-Powered BMW F30/F31 Sedan and Touring. This system delivers the perfect blend of everyday refinement and weekend aggression — complete with a bold dual-exit layout that instantly transforms your car’s rear profile.

Whether you’re after a 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 dual-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 range.

Key Features & Benefits

• Dual-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)
• Dual exhaust tips – available in polished, chrome, or black finishes
• Valve control module or remote toggle system
• Mounting hardware, clamps, and gaskets

Performance & Sound You Can Feel

The BAVMODS® Dual-Tip Valved Cat-Back Exhaust System brings out the best of the B48’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 dual-exit design.

Expect:

• Deeper, more refined tone under load
• Improved exhaust flow for enhanced response
• Aggressive rear-end presence with dual tips
• Balanced sound control for both comfort and 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 (B48 engine), F31 Touring (Wagon): 328i, 330i (B48 engine)

Compatible with RWD and xDrive configurations

Note: Designed specifically for B48-equipped 320i / 330i models (2016–2019). Not compatible with earlier N20/N26 engines or 335i / 340i variants.

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