Description

3.5-inch Midpipe • Dual 3-inch Axle-Back • Vacuum Valves

Overview

The Valvetronic Designs Valved Exhaust System for the BMW G29 Z4 M40i is engineered for enthusiasts who want stronger sound, performance and daily-driving flexibility. Developed from B58 platforms including the Supra and M340i, it transforms the Z4's exhaust character while retaining a refined closed-valve mode.

Sound & Control

• Valves Open: Rich, aggressive tone with turbo spool and motorsport-inspired overrun.
• Valves Closed: Refined, stock-like sound for cruising and early starts.

Performance Engineering

• Maximum Flow Design: 3.5-inch midsection transitioning into dual 3-inch mandrel-bent runs.
• Balanced Sound Profile: Tuned for a deep, full-bodied B58 character.
• Precision Construction: TIG-welded T304 stainless steel.

Fitment

• 2017+ BMW G29 Z4 M40i

Features

• Fully mandrel-bent tubing
• Precision TIG welds
• T304 stainless steel construction
• Electronic-actuated valves
• 11.1 lbs lighter than factory exhaust
• Performance-focused exhaust tips

Compatibility

bmw, exhaust, g29, sports, waitlist, z4

Key Features

• Vehicle-specific G29 Z4 M40i fitment.
• 3.5-inch midpipe, dual 3-inch axle-back and valve control.

Installation & Availability

Professional installation is recommended. Installation service is available; contact LXP Forged for fitment and scheduling.