ApexFlow Valvetronic - BMW M3/4 F80/82 T304 Catback Exhaust

Description:

Why It Works

• One-Piece System Design: Complete cat-back exhaust system engineered as a single solution — no mixing components from multiple vendors, ensuring perfect fitment and optimized exhaust flow.

• Electronic Valve Control: Instantly switch between aggressive performance sound and refined OEM-style tone with remote-controlled exhaust valves.

• Mandrel-Bent Construction: Full mandrel-bent tubing maximizes exhaust flow, improving throttle response, turbo efficiency, and overall performance.

Sound & Control

• Valves Open: Deep, aggressive exhaust note with a rich midrange and sharp overrun crackles during deceleration.

• Valves Closed: Quiet, refined, OEM-like sound profile for comfortable daily driving and long highway trips.

• No Drone: When paired with the OEM downpipe, cabin comfort remains unaffected with minimal interior resonance.

Construction & Options

• Material: T304 stainless steel for long-term durability and superior corrosion resistance.

• Weight Savings: 16.4 lb/7.4 kg lighter than the factory exhaust system, improving overall vehicle efficiency.

• Craftsmanship: Precision TIG welds and smooth mandrel bends for maximum strength and unrestricted airflow.

• Tips: Includes premium exhaust tips for a clean, aggressive, performance-oriented appearance.

What’s Included

• Full T304 stainless steel valved cat-back exhaust system

• Electronic exhaust valves with key fob remote control

• All necessary clamps, brackets, and installation hardware

Specifications

• Tubing: Full mandrel-bent T304 stainless steel

• Valves: Electronic, remote-controlled

• Weight Savings: 16.4 lb/7.4 k lighter than OEM

• Finish: Brushed stainless steel

Fitment

• 2014-2021 BMW M4 F82

• 2014-2021 BMW M4 F83

• 2014-2021 BMW M3 F80