Forge Motorsport Charge Pipe Kit for BMW N55 M135i M235i M2 F87

The plastic charge pipe is one of the N55's (F2x, F3x, F87) known weak points. Heat cycling makes the factory coupler brittle, and over time it cracks, fractures and eventually fails — usually taking your boost with it. We've had a steady run of enquiries from owners after exactly this failure. Our alloy replacement fixes it for good: a CNC coupler that won't go brittle like the original.

Fitment
Will not fit xDrive. On xDrive cars the steering rack sits where the pipe needs to go, so there's no clearance.

What you get
CNC-machined alloy coupler and flanges — no more brittle plastic, no more cracking
Sharper throttle response and reduced turbo lag
Retains the factory-style O-ring throttle lock flange for a clean, OEM-style fit
Precision CNC couplers for quick, easy connection and disconnection
Powder-coated hard pipes for a durable, hard-wearing finish
Keeps your factory electronic diverter valve
Water/meth injection boss built in — run it if you want it, or fit the supplied plug if you don't
Direct replacement for OEM part 13717604033

Before you fit
Keep your original O-rings and seals during removal — they're reused on the Forge hoses.