Between your airbox and the B48A20T1's turbocharger inlet sits a length of factory silicone engineered with cost and NVH targets in mind, not airflow. It flexes under boost pressure, its geometry creates turbulence, and it was never built to hold up through hard track sessions. MMX replaced it with multi-layer reinforced silicone built to the spec the engine deserves.
The large-diameter smooth-flow construction minimizes turbulence through the entire run between the airbox and intake elbow. The embedded reinforcement resists deformation under heat and sustained boost pressure that degrades stock hoses over time. Fitment is direct to the OEM airbox and intake elbow, and the hose pairs with the MMX Intake Resonator Delete Pipe if you want to address the full intake path in one go.
Key Features
- Multi-layer reinforced silicone construction resists deformation under heat and boost pressure
- Large-diameter smooth-flow design minimizes airflow turbulence
- Direct replacement for the factory intake hose, no modification required
- Compatible with OEM airbox and intake elbow, fits without alteration
- Pairs with the MMX Intake Resonator Delete Pipe for a complete intake path upgrade
- OEM-quality fit and finish using factory mounting points
- Engineered and designed in the UK by MMX Performance
Vehicle Fitment
Confirmed fitment for vehicles equipped with the B48A20T1 engine:
- MINI F56 GP3 / John Cooper Works GP (2020-2021)
- BMW F40 M135i xDrive (2019-2024)
Installation Notes
A straightforward hose swap that requires no specialist tools. Most owners complete this in under 30 minutes using basic hand tools.
- Loosen the clamps securing the OEM intake hose at each end
- Remove the factory hose from the airbox outlet and intake elbow
- Route the MMX silicone hose into position
- Secure using the factory clamps or upgrade to stainless worm-drive clamps
- Start the engine and check for air leaks before driving
