BMW G29 Z4 M40i Rainbow Titanium Metal Charge Pipe Upgrade Kit – Fortified Reliability, High-Strength Metal, Improved Throttle Response & Heat Resistance | Fits 2019–2025 (B58 Gen 2 / B58TU Engine)

Elevate both the performance and appearance of your BMW Z4 M40i (G29) with the BAVMODS® Rainbow Titanium Metal Charge Pipe Upgrade Kit, engineered specifically for vehicles equipped with the B58 Gen 2 (B58TU) engine.

From factory, the Z4 M40i comes with a plastic charge pipe that’s prone to failure — known to crack, split, or blow apart under sustained boost, especially in tuned or high-heat conditions. The BAVMODS® Titanium Charge Pipe eliminates that risk with a fortified, precision-built metal design that ensures long-term reliability and improved airflow.

What sets this version apart is its rainbow titanium finish — an iridescent, heat-treated surface that transitions through vivid gold, violet, and blue tones. Beyond its stunning aesthetic, this finish reflects heat more effectively than bare metal, helping reduce heat soak while adding a premium, motorsport-inspired presence to your Z4’s compact engine bay.

Each pipe is CNC-machined for smooth internal airflow, ensuring faster turbo spool, sharper throttle response, and consistent boost pressure even under demanding driving conditions. Whether you’re daily driving or pushing limits on the track, this upgrade combines functional engineering with visual artistry in true OEM+ fashion.

Key Features & Benefits

• High-Strength Metal Construction – Replaces the OEM plastic charge pipe to prevent cracking, separation, and boost leaks.
• Rainbow Titanium Finish – Heat-treated for color stability and heat reflection, giving your bay a striking gradient effect.
• Precision Airflow Design – Smooth internal surfaces enhance charge velocity and reduce turbulence.
• Boost-Tested Durability – Built to handle high boost pressures from tuned B58TU setups.
• OEM+ Fitment – Direct bolt-on installation using factory clamps, sensors, and couplers.
• Corrosion & Heat Resistant – Designed to maintain reliability under high thermal stress.
• Visual Enhancement – Adds a vibrant, high-performance finish that stands out every time you open the hood.

Performance You Can Feel

The BAVMODS® Rainbow Titanium Charge Pipe delivers immediate improvements in throttle precision, boost response, and turbo consistency. Its rigid structure resists expansion under boost, ensuring smooth airflow and steady power delivery.

Beyond function, the titanium gradient finish turns your Z4’s engine bay into a centerpiece of performance design. It’s not just a part — it’s a statement: engineered for endurance, finished for perfection.

Why It Matters

Your charge pipe connects the turbo to the intercooler — a high-pressure section of your B58TU engine’s boost system. The factory plastic design can fail under load, causing sudden boost loss, limp mode, and reduced performance.

The BAVMODS® Rainbow Titanium Charge Pipe eliminates that weak point, delivering long-term dependability and an unmistakably high-end appearance.

It’s durable, it’s functional, and it’s visually stunning — built to perform, designed to impress.

FITMENT: BMW Z Series – G29 (2019–2025) including

• Z4 M40i (B58 Gen 2 / B58TU Engine)

Rear-wheel drive configuration only.

Compatible across U.S., European, and Asian markets.

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