Many of you will already be aware that the original plastic charge pipe is a real weak link on the N55, and over the last 6 months, we have received many requests after the charge pipes fail. If you take a look at the images above you can see how the coupler becomes brittle leading to cracking, fracture and ultimate failure. Our alloy replacement uses a CNC coupler to ensure this is a permanent solution.

We would recommend that whilst replacing this you also consider the Forge turbo to intercooler pipe upgrade.

You may wish to consider the replacement OEM Circlip and o-ring if your stock one is missing, damaged, or perished.

NOTE: HARDPIPES ARE NOW MADE WITH A WATER METH BOSS BUILT IN. THE BOSS CAN BE PLUGGED IF NOT USED, THE PLUG IS SUPPLIED WITHIN THE KIT.

• The Forge boost pipe for BMW M2, M135I, M235I, 335I & 435I will Increase throttle response and decrease turbo lag.
• The Forge boost pipe allows you to retain the factory style O-ring throttle lock flange. 
• Precision CNC couplers allow for a quick and easy connection and disconnection.
• Precision CNC machined flanges.
• The alloy hard pipes are powder coated to allow for a more durable hard wearing product.
• You can retain the factory electronic diverter valve.
• One meth bung for Water/Meth Integration
• This replaces OEM Pipe Part No. 13717604033

Compatible models

• M2,
• M135I
• M235I
• 335I
• 435I