BMW F-Chassis Valved Axle-Back Exhaust System – Version 2

T304 Stainless Steel with Electronic Valves & Cast Y-Pipe

Overview

The Version 2 Valvetronic Designs F-Chassis Valved Exhaust is our most refined system yet for the BMW F-Series lineup. Designed for maximum performance, versatility, and longevity, V2 introduces a host of improvements, including a new valve design for optimal reliability, relocated hangers, and revised muffler internals for a more docile, refined tone when valves are closed.

A newly engineered cast Y-pipe maximizes exhaust flow and enhances tonal quality, delivering a more engaging and sonorous sound across the rev range. Whether paired with the OEM mid-pipe or most aftermarket mid-pipes matching factory dimensions, this system offers seamless fitment and an uncompromising sound experience.

Why It Works

• New Valve Design: Improved durability and responsiveness over previous versions.

• Refined Closed-Valve Acoustics: Reduced volume and smoother tone for daily driving comfort.

• Cast Y-Pipe Upgrade: Increases flow and improves exhaust scavenging for a richer, more balanced tone.

Sound & Control

• Valves Open: Deep, raw, and aggressive tone with loud pops, sharp overrun snaps, and pronounced gear-change sounds.

• Valves Closed: Near-stock volume for quiet commuting or late-night driving.

• Dynamic Drive Mode Integration: Fully compatible with BMW’s factory drive mode settings for instant sound control.

Construction & Quality

• Material: Brushed T304 stainless steel for strength and corrosion resistance.

• Craftsmanship: Precision TIG welds and full mandrel bends for optimal flow.

• Tips: Sleeve-style exhaust tips for perfect alignment and premium appearance.

• Valve System: OEM-style electronic valves with rapid open/close function; extension harness included.

Fitment (Includes xDrive models)

F30:

• 320i (2012–2016)

• 328i (2012–2016)

• 330i (2016–2018)

• 335i (2012–2016)

• 340i (2016–2018)

F32 / F33 / F36:

• 420i (2012–2017)

• 428i (2012–2017)

• 430i (2017–2019)

• 435i (2012–2017)

• 440i (2017–2019)

F22:

• 228i (2014–2016)

• 230i (2016–2019)

• M235i (2014–2016)

• M240i (2017–2019)

F20:

• M135i (2014–2017)

• M140i (2017–2019)

Installation Notes

• 100% reversible—return to stock at any time.

• For non-m sport or 4 cyl applications, an m-sport style diffuser is necessary for dual tip fitment

• B58/B46 Owners: Requires minor mid-pipe modification – Learn More

• 4-Cylinder Owners: Includes adapter pipe (weld recommended). Requires 6-cylinder diffuser or diffuser modification for proper tip exit.

• Non-Valve Cars: Use our Electronic Exhaust Valve Harness to enable in-car valve control.

What’s Included

• T304 stainless steel valved axle-back exhaust

• Cast Y-pipe assembly

• OEM-style electronic valves

• Extension harness for factory valve integration

• Sleeve-style exhaust tips

• All necessary clamps and hardware

Specifications

• Material: Brushed T304 stainless steel

• Valves: OEM-style electronic, integrated with BMW drive modes

• Design: Cast Y-pipe with revised muffler internals for tonal refinement

• Finish: Brushed stainless

🎧 Hear It in Action:

• Sound Clip 1

• Sound Clip 2

Orders are processed same or next business day. Shipping times vary depending on the product, shipping service, and whether freight shipping is required. While we ensure all inventory levels are current and accurate, they can change due to logistics and inventory feeds. Standard shipping typically takes 3-7 business days, but some items may require additional time depending on their origin. Feel free to call us anytime for the latest status of your order.