BlackBoost FTA Adapter for Mercedes-Benz A45(S) AMG (W177) M139 2.0L I4 Turbo (2019+) boots Extra wide viewport

Extra wide viewport

which allows air to travel from the front of the housing to the rear

Pre-curved leg construction helps improve fit and reduce riding fatigue

7% Spandex

Improved face shield ratchet mechanism

BlackBoost FTA Adapter for Mercedes-Benz A45(S) AMG (W177) M139 2.0L I4 Turbo (2019+) boots Extra wide viewportBlackBoost FTA Adapter for Mercedes Benz A45(S) AMG (W177) M139 2. 0L I4 Turbo (2019+) The BlackBoost FTA (free to air) adapter converts the factory diverter valve into a blow off valve by redirecting the compressed air from the turbo to be vented to the atmosphere instead of the air being redirected into the air intake. Features: No Tuning required No Check Engine Light Plug and Play Installation Machined 6 Series Aluminium Iconic Blow off sound The