One of the easiest and best ways to upgrade the breathing abilities of the F2x N55-powered M135i / M235i is with a replacement performance panel air filter. Replacing the filter for the MMR Performance item will allow a small increased in performance and also means it doesnt need to be replaced at every service interval.
- Enhanced engine performance
- Enhanced induction tone
- Designed to be used with the OE air filter housing
- Available in a lightly oiled, or dry filter material
- Easily fitted and completely washable.
- Lifetime guarantee