Better airflow begins before the air even reaches the filter.

The defining feature of the MST WRX1505 / WRX1506 intake system is its newly developed front-facing air inlet design.

Rather than focusing solely on filter size, our engineers took a step further by rethinking how fresh air enters the system in the first place.

The redesigned inlet creates a more direct path for outside air to reach the intake system, helping reduce unnecessary airflow detours while improving access to cooler ambient air during vehicle movement.

It's not just about bringing in more air. It's about giving that air a better path to follow.

The exterior design follows the same philosophy.

Inspired by the WRX's aggressive styling, the front-facing inlet incorporates sharp, purposeful lines that complement the vehicle's performance-oriented character.

Every contour is designed to bring function and aesthetics together, creating a more cohesive and aggressive appearance without losing sight of its engineering purpose.

Paired with a massive 152mm (6-inch) high-flow air filter, the system offers increased airflow capacity and is designed to reduce intake restriction under demanding operating conditions.

Whether at higher engine speeds or elevated boost levels, the oversized filter provides additional airflow headroom to support the engine's growing air demands.

From the front-facing inlet to the airflow path and oversized filter, every detail serves one purpose: A more direct path for air. Greater freedom for performance.