BMW G22/G23/G26 4 Series M440i Rainbow Titanium Metal Charge Pipe Upgrade Kit – Fortified Reliability, High-Strength Metal, Improved Throttle Response & Heat Resistance | Fits 2021–2025 (B58 Gen 2 / B58TU Engine)

Unlock both performance reliability and visual excellence with the BAVMODS® Rainbow Titanium Metal Charge Pipe Upgrade Kit, designed exclusively for the BMW G22 M440i Coupe, G23 M440i Convertible, and G26 M440i Gran Coupe equipped with the B58 Gen 2 (B58TU) engine.

The factory plastic charge pipe is one of the most failure-prone components on modern BMWs — known to crack, flex, or completely separate under higher boost pressure, especially in tuned or spirited driving. The BAVMODS® Titanium Charge Pipe eliminates this issue entirely with a reinforced, high-strength metal body that delivers factory precision with aftermarket performance.

The rainbow titanium finish isn’t just a visual statement — it’s heat-treated for resilience and color stability, capable of withstanding extreme under-hood temperatures. The iridescent spectrum shifts across tones of gold, violet, and blue, adding a show-stopping, motorsport-inspired look to your 4 Series engine bay.

Inside, the precision-machined interior promotes smoother airflow, reducing turbulence and pressure loss for faster turbo spool, sharper throttle response, and more consistent boost levels. Designed for both stock and tuned M440i models, this upgrade represents the perfect blend of engineering durability and premium aesthetics.

Key Features & Benefits

• High-Strength Metal Construction – Replaces the OEM plastic pipe to eliminate cracking, flex, and boost leaks.
• Rainbow Titanium Finish – Heat-treated for durability and vibrant color stability under high temperatures.
• Optimized Airflow Path – Smooth bore design reduces turbulence for efficient boost delivery.
• Boost-Tested Reliability – Withstands elevated boost pressures and extended heat cycles.
• OEM+ Fitment – Direct bolt-on installation with factory sensors, clamps, and couplers.
• Corrosion & Heat Resistant – Designed for longevity under demanding conditions.
• Engine Bay Enhancement – Adds a striking, color-shifting titanium finish that redefines your 4 Series aesthetic.

Performance You Can Feel

Experience immediate gains in throttle precision, boost consistency, and turbo response. The solid metal construction prevents flex and pressure drop, while the titanium coating minimizes heat soak, allowing your B58TU engine to perform with stability and confidence through every gear.

Whether you’re cruising or pushing your M440i to its limits, the BAVMODS® Rainbow Titanium Charge Pipe ensures reliable performance with a premium visual impact — a perfect fusion of function and form.

Why It Matters

Your charge pipe connects the turbocharger to the intercooler — a high-stress component critical to your BMW’s performance. The OEM plastic version is prone to failure, which can cause boost loss, limp mode, or inconsistent power delivery.

The BAVMODS® Rainbow Titanium Charge Pipe offers permanent peace of mind. It enhances flow, stability, and temperature management while adding an unmistakable aesthetic edge.

It’s durable, functional, and beautifully designed — built to perform and made to impress.

FITMENT: BMW 4 Series – G22 / G23 / G26 (2021–2025) including

• M440i Coupe (B58 Gen 2 / B58TU Engine)

• M440i Convertible (B58 Gen 2 / B58TU Engine)

• M440i Gran Coupe (G26, B58 Gen 2 / B58TU Engine)

Compatible with both RWD and xDrive variants across U.S., European, and Asian markets.

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