[R44 Performance]

Hey everyone, we wanted to make a post about our experience installing a full CSF S55 cooling package on our BMW F87 M2 Competition. Company policy is: we wouldn’t sell you anything we wouldn’t be proud to have on our own car. This is a great example of that.

The Package: https://r44performance.com/collectio...bmw-s55-engine

Watch the Install https://youtu.be/RX9nH7AfDjo?si=ZHpc4jl5k3agfmna



https://youtu.be/RX9nH7AfDjo?si=ZHpc4jl5k3agfmna

Why did we go with CSF?

We were really happy with how the CSF upgrades performed on our F80 M3 track car so we decided to opt for the exact same setup on Dylan’s M2 Competition with the addition of the all-new auxiliary radiators. The car is about to be Stage 2 tuned (possibly even further) so a full overhaul of the cooling system was needed.

We know that the factory cooling setup is pretty good out of the box but the CSF upgrades have larger cores, better capacity and have a much better build-quality. As the F Series cars are starting to get on in age, the factory items get damaged or just become a bit tired so instead of replacing them with OEM items, upgrading to CSF is definitely the way to go.

A major selling point that drew us to CSF was the integrated rock guards. The OEM radiators are left completely exposed leaving your car one rock away from some serious problems - not something you want to happen on track when temps are high!



How was the install?

Overall, the install process was very straightforward albeit a bit messy. It’s just coolant on Rhys’ jeans - he didn’t have an accident. The CSF items dropped nicely into the OEM fittings and everything lined up perfectly. The only tricky bit was catching all the fluids and keeping our workshop floor as clean as possible.

Once complete, we topped up the oil and did a complete flush of the cooling system. And that was that.

How have the results been so far?

This car definitely gets put through its paces. It goes without saying that there have been absolutely no issues with the parts so far + even if there had been, each component is covered under warranty which just gives us peace of mind.

The true benefits will be uncovered during the tuning process as we will be able to push the car a bit further without temperatures being a limiting factor. We’ll be sharing the full tuning process in the near future so definitely stay tuned for that.

We’ve left some of the key features & specs of each component below in case you were curious. You can check out the full package here: https://r44performance.com/collectio...bmw-s55-engine


Top Mount Charge Cooler
60% Increase in Core Size Compared to the OEM Cooler
Left/Right, Cross-Flow, Dual-Pass Core Configuration with 2-Stage Water Cooling for Maximum Efficiency and Intake Temperature Reduction (vs. OEM Single-Pass Vertical-Flow Design)
Designed with 3D Scanning/Rapid Prototype Technology to Ensure Precise Fitment and Maximum Surface Area Utilization
“Drop-in Fit” Design for an Easy & Quick Plug-and-Play Installation, Complete with OEM-Style “Quick-Connect” Water Connections and Sensor Ports




Heat Exchanger
2-row 42mm Core (Dual Core) Featuring CSF’s Exclusive B-tube Technology
Core Features an Ultra-Efficient Fin with 6.5mm Fin Height and Multi-Louvered Design for Maximum Surface Area Contact
Dual-Pass Flow Structure Allows the Coolant to Flow Across the Core of the Radiator Two Times Before Exiting the Radiator for the Lowest Outlet Temperature Possible (OEM Style Design)
CNC Machined, OEM-Style “Quick-Connect” Inlet/Outlet Connections
CNC Machined, OEM-Style Mounting Brackets & Fittings for Superb Fit and Durability
Includes Removable Aluminum Rock Guard
All-Aluminum Race Style Drain Plug




Auxiliary Radiators
2-Row 42mm High-Performance Core Featuring CSF’s B-Tube Technology
Ultra Efficient 6.5mm Tall Fins with a Multi-Louvered Design for Maximum Surface Area Contact
Tank Volume increased by 10% and Core Size Increased by 6.4%
100% All-Aluminum TIG-Welded Construction
OEM Style “Quick Connect” Inlet/Outlet
True “Drop-in Fit” Requires No Modifications to Install
Includes Detachable Rock Guard





Engine Oil Cooler
5.4mm Tall Multi-Louvered Fin vs. OEM 7mm
Made with CSF’s AC Condenser Technology Using a 1-Row Super-High Pressure 32mm 10-Channel Microtube for Optimal Oil Flow and Maximum Surface Area Contact
Utilizes OEM Top/Bottom Rubber Seals for Optimal Airflow
OEM Style Inlet/Outlet Connections
Drop-in Fit Requires No Modifications to Install

[CSF Cooling]

Great writeup and pictures - no bias here