BMW S55 Stage 2 Twin Turbocharger Upgrade Kit - Mosselman MSL65-80 for F80 M3, F82/F83 M4, F87 M2 Competition - Plug & Play, Up to 800 HP

MSL65-80 S55 Hybrid Twin Turbos for F8x M3 M4 and F87 M2 Competition

Looking to turn your S55-powered M car into a genuine powerhouse without compromising drivability or fitment? This Mosselman MSL65-80 twin turbo set is the direct bolt-in solution for the F80 M3, F82 and F83 M4, and F87 M2 Competition. Built from brand-new OEM MHI units and upgraded in-house by Mosselman, these high-flow chargers deliver outstanding headroom with factory-like integration, supporting up to 800 hp with the right hardware, calibration and fuel.

Expect rapid spool, strong midrange and relentless top-end pull thanks to precision machining, modern aero on the compressor and turbine, and meticulous VSR balancing. If you are chasing reliable, repeatable performance on road, strip or track, this is the benchmark S55 twin turbo upgrade for the F8x platform.

Highlights

• Up to 800 hp potential with suitable supporting mods and mapping
• Brand-new MHI bases upgraded by Mosselman, not refurbished cores
• Direct-fit installation on F80, F82, F83 and F87 M2 Competition
• Reduced exhaust backpressure and improved airflow for sustained high-rpm power
• VSR balanced for durability and smooth operation
• Limited 1-year warranty for peace of mind

Engineering details

• Billet aerospace-grade aluminium compressor wheel
• Latest oversized MHI turbine wheel with slim-nose design
• CNC machined housings for precise tolerances
• Titanium shaft nut
• Manufactured and assembled at Mosselman HQ in the Netherlands
• Bolt-on fitment, no fabrication required
• Very low core charge compared to alternatives

Real-world results our customers love

We have supplied and fitted these Mosselman S55 hybrids on customer M2C, M3 and M4 builds, and feedback has been consistently excellent. Owners praise the OEM-level fit, the crisp response and the huge ceiling for power when paired with the correct intake, exhaust, fueling and bespoke ECU calibration.

What you will need for installation

For a smooth, leak-free install we recommend the following genuine service items:

• BMW S55 F80 F82 F87 Turbo Installation Kit
• BMW S55 F80 F82 F83 Turbo Coolant Supply and Return Lines Kit
• BMW S55 F80 F82 F87 Service Kit
• 2 x Castrol Edge 5W-30 M Fully Synthetic Engine Oil
• 4 x BMW Radiator Engine Antifreeze and Coolant 1.5 Litre
• 8 x De-ionised Water 1 Litre

Fitment

• BMW M2 Competition F87, S55
• BMW M3 F80, including Competition and CS
• BMW M4 F82 and F83, including Competition, CS and GTS

Installation and calibration

Professional fitting and custom ECU tuning are strongly recommended to maximise performance, reliability and safety. For expert installation, choose MJ Modifications in Warwickshire. Request a fitting quote via info@mjmodifications.co.uk.

Important notes

• Every upgraded turbo is built from a new genuine BMW MHI unit
• Core charge available and refundable after inspection and approval by Mosselman
• Final power output depends on supporting components, calibration and fuel quality

Compatibility check

We verify fitment before dispatch using your registration number for UK vehicles or the last 7 digits of your VIN. Enter your details at checkout to ensure the correct parts for your car.

Part number

010210019

Brand

Mosselman

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