AEM Wrinkle Red Cold Air Intake Subaru WRX STI 2015-2017 | 21-735WR Vehicle Model Bump-steer is the concept of

Bump-steer is the concept of bumps or imperfections in the road causing a car to steer off-track on its own without any driver input

Ideal for performance street and race builds

requiring zero modifications to your vehicle

The increased surface area (9

New 2-3/4" diameter 1-piece Carbon-Fiber driveshaft with no clearance issues or MPH restrictions coming soon

AEM Wrinkle Red Cold Air Intake Subaru WRX STI 2015-2017 | 21-735WR Vehicle Model Bump-steer is the concept ofFitment: 2015 2017 STi ONLY The AEM 21 735WR Performance Cold Air Intake System produces horsepower and torque gains by replacing your vehicle's restrictive factory air filter and air intake housing. This air intake system was designed, tuned and dyno tested to fit specific Subaru WRX STI models. Air enters the system through an oversized AEM Dryflow synthetic washable air filter for outstanding air flow, filtration and performance. The air filter is