Mosselman S55 Upgraded Turbocharger Set

Mosselman BMW S55 Turbocharger Set

The Mosselman Upgrade Turbocharger (MSL65-80) for the BMW S55 engine combines a huge boost in performance with an unmatched spool. Our S55 turbocharger set does not only make your car faster, it is designed to make the car feel better to drive: smoother, stronger and more alive. Airflow is the core of every Mosselman design. By increasing airflow and reducing backpressure, our turbos deliver faster spool, stronger mid-range performance and clean, consistent power right up to the redline, with boost that builds naturally, without lag, surges or sudden steps. Resulting in a predictable, controlled and seamlessly integrated driving experience. Depending on the modifications done to the car and fuel type, this turbo set can deliver up to 800hp!

Thanks to their OEM origins, the set is easy to install and requires no additional modification. The Mosselman S55 Turbocharger Set is available for the BMW F8x (M2 Competition, M3 and M4) with the BMW S55 engine. If you have any doubts about your turbocharger version, feel free to contact us. With the vehicle’s VIN number, we can verify exactly which turbo version you need.

Mosselman S55 Turbocharger Set

Available for the BMW F8x (M2 Competition, M3 and M4) with the BMW S55 engine.

Performance up to 800 hp*

No core charge

Based on NEW MHI S55 Turbochargers

Billet aerospace grade aluminum compressor wheel

Latest design oversized MHI turbine wheel with “slim nose”

High precision CNC machined housings

VSR balanced

Titanium shaft nut

Manufactured In-House at the Mosselman HQ, located in The Netherlands

Plug and Play installation

At Mosselman Turbo Systems, every performance turbo begins with precision engineering.

The compressor wheels are CNC-milled from forged billet aluminum for maximum strength and airflow efficiency, while the turbine wheels are built from Inconel or MAR–M to withstand extreme exhaust gas temperatures. Each component is machined to exact tolerances before being assembled into the CHRA, the core of the turbo where strength, sealing and smooth rotation are critical.

Balancing is the defining step in our process. Our turbos operate at speeds up to 200,000 rpm, so every wheel is balanced individually before the complete CHRA is high-speed balanced under oil pressure to replicate real-world conditions. Microscopic corrections are made until the core runs flawlessly, ensuring fast spool, stable boost and long term durability. The result is a compact, high-performance unit that delivers predictable response, clean power delivery and the reliability Mosselman is known for. Engineered to elevate BMW engines far beyond their factory limits.