Unleash the full potential of your N54-powered BMW with the Ramair Twin Cone Performance Intake Kit, engineered specifically for the BMW 135i E8X platform.

Designed to replace the restrictive factory airbox, this high-performance intake system delivers dramatically improved airflow, sharper throttle response, and an aggressive turbo induction sound that transforms the driving experience.

Built for enthusiasts who demand real results, this is one of the most effective upgrades for unlocking power from the legendary twin-turbo N54 engine.

Proven Performance Gains

• +35.7 HP increase (dyno tested) on a Stage 2 BMW N54 setup

• Power increased from 393.6 HP to 430 HP after removing the restrictive OEM airbox

This isn’t just a sound upgrade—it’s a real performance gain backed by testing.

Key Features

• Twin cone high-flow foam filters for maximum, unrestricted airflow

• Significantly improved throttle response and turbo spool

• Aggressive intake and turbo sound – signature N54 induction noise

• Direct replacement for the OEM intake system

• High-quality silicone intake pipe for smooth airflow delivery

Performance & Driving Experience

Ramair SR intake systems are engineered to eliminate the key airflow restrictions found in the factory intake setup. By allowing the N54 to breathe more freely, this kit delivers:

• Faster turbo response and boost build-up

• Stronger mid-range and top-end power

• More engaging, performance-focused driving feel

The dual foam filters are designed to provide near-unrestricted airflow, while still maintaining effective filtration to protect your engine under all conditions.

What’s Included

• 2x Dual-layer foam cone air filters

• Black silicone intake pipe

• Full installation hardware kit (brackets, bolts, fittings)

• Step-by-step installation guide

Compatibility

• BMW 1 Series E81 135i (2005–2013) – N54 Engine

• BMW 1 Series E82 135i (2005–2013) – N54 Engine

• BMW 1 Series E87 135i (2005–2013) – N54 Engine

• BMW 1 Series E88 135i (2005–2013) – N54 Engine