BMW N55 Charge Pipe Kit - MMR High-Flow Aluminium Chargepipe Upgrade for 135i & 335i (E-Series E8x/E9x: E82 E88 E90 E91 E92 E93) | Direct Replacement with CNC Connections & 1/8 inch Meth/Water Bungs

MMR alloy boost pipe kit for BMW 1 Series 135i and 3 Series 335i with the N55 engine

Bin the fragile factory plastic ducting and unlock dependable boost with MMR’s free‑flowing aluminium charge air pipework. This direct‑fit hard pipe upgrade replaces the stock turbo to intercooler/throttle body tube on E‑chassis 1 Series and 3 Series N55 cars, giving sharper throttle response, smoother power delivery and a rock‑solid seal that stands up to standard or tuned setups.

Engineered for reliability and performance, the MMR assembly uses rigid lightweight alloy tubing with a smooth internal bore and mandrel bends that have been CFD refined for excellent airflow. Precision CNC machined ends deliver an OE‑style connection that uses the proper retaining clip and a fresh O‑ring for a leak‑free fit. Finished in a durable crinkle black coating with a laser‑etched MMR logo, it looks as good as it performs.

Why this upgrade is a must for your N55

• Stops common boost leaks from the original plastic pipe that is known to split under pressure
• Improves response and drivability thanks to a smoother, less restrictive internal profile
• Rigid aluminium construction resists deformation under load for consistent boost control
• CNC machined connectors with secure c‑clip and new O‑ring for a positive, factory‑style seal
• Crinkle black finish with laser‑etched branding for a premium OEM+ look in the bay
• Direct‑fit replacement that uses the correct fittings and locations
• Two integrated 1/8 inch ports ready for water injection or methanol injection hardware

What you get in the box

• High‑flow aluminium boost pipe with CNC machined connections
• Silicone joining hose
• Replacement c‑clip
• Jubilee clamps
• O‑ring
• Two 1/8 inch bungs for water or meth injection options

Vehicle compatibility

• BMW 135i N55 on the E8x chassis, including E82 Coupe and E88 Convertible
• BMW 335i N55 on the E9x chassis, including E90 Saloon, E91 Touring, E92 Coupe and E93 Convertible

Proven by us

At MJ Modifications we run this MMR pipework on our own builds and have fitted it to many customer cars. Fitment is spot on, the finish is genuinely premium and the reliability improvement over the stock plastic tube is immediate. It is a smart foundation for any remapped Stage 1 or Stage 2 setup and equally valuable on a standard car you want to keep leak free.

Fitting and support

Professional fitting available at MJ Modifications in Warwickshire. For a booking and quote, email info@mjmodifications.co.uk.

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