BMW F90 M5 Valved Cat-Back Exhaust System

Grade 5 Titanium, 3.0" Tubing, Large Cross-Section X-Pipe, Electronic Valves

Overview

The F90 M5 carries on the S63 4.4L twin-turbo legacy—but its factory exhaust leaves the soundtrack on mute. The Valvetronic Designs Valved Titanium Cat-Back unlocks the voice this car deserves: refined when you want it, ferocious when you don’t.

Built from Grade 5 titanium with 3.0" tubing from inlet to outlet, the system integrates seamlessly with factory control or runs on a standalone remote for full command in any drive mode. Finish it with your choice of premium tips and let the M5 sing.

Why It Works

• Forward, Large Cross-Section X-Pipe: Increases scavenging, smooths tone, and virtually eliminates unwanted rasp—especially on cars with aftermarket downpipes.

• 3.0" Free-Flow Architecture: Reduces back pressure for sharper throttle response and a cleaner top-end note.

• Valved Control, Your Way: Tie into the car’s ECU (Sport/Sport+) or use the included standalone remote for instant open/close in any mode.

Sound & Control

• Valves Open: Deep, exotic V8 character with crisp overrun and engaging burbles—without the buzzy, raspy edge common on other setups.

• Valves Closed: Subtle, composed tone for daily commuting and highway cruising.

• Flexible Integration: Choose factory valve integration or standalone remote control.

Construction & Options

• Material: Ultra-light Grade 5 titanium throughout.

• Weight Savings: 56.5 lb lighter than the factory exhaust.

• Craftsmanship: Precision TIG welds and smooth, high-flow routing.

• Tips: Multiple finishes available to complement your M5.

Fitment

• 2018–2023 BMW M5 (F90)

Installation Notes

• Direct bolt-on cat-back replacement to OEM mounting points.

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

What’s Included

• Full Grade 5 titanium valved cat-back system

• Forward large cross-section X-pipe

• Electronic valves with standalone remote (factory integration harness option)

• All necessary clamps and hardware

Specifications

• Tubing Diameter: 3.0" inlet to outlet

• Material: Grade 5 titanium

• Valves: Electronic; standalone remote or OEM integration

• Weight Savings: 56.5 lb vs. OEM

• Design: Forward X-pipe for scavenging and tonal balance; drone-free calibration

Valvetronic Designs shipping & returns

• Returns: new, unused and uninstalled parts within 30 days of purchase, in the original packaging, with a return authorization (RMA) number issued first.
• Restocking fee: 25% on all non-warranty returns; the customer pays return shipping unless the part qualifies for warranty.
• Sound: exhaust sound and tone are personal taste and are not grounds for a return or warranty claim.
• Warranty: lifetime on stainless and titanium tubes and welds, 3 years on mufflers and resonators, 1 year on valves, remotes, electronics and tips. If a problem shows up after install, contact us before removing the part.

To start a return or ask a question, contact us with your order number.