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The 1% Award · Auto Parts Store of the Year 2026 The 1% Award · Auto Parts Store of the Year 2026

AeroflowDynamics

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Rear Diffuser V3

Fits: 15-21 WRX/STI

Options

V3 Middle Section V3 Full Rear Diffuser V3 Rear Spats (ONLY)

$39999

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Auto Parts Store of the Year 2026

AeroflowDynamics Rear Diffuser V3

Fits: 15-21 WRX/STI

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Fitment

Please Note: Fits 2015-2021 Subaru WRX/STI. AeroflowDynamics V3 rear diffuser; aerospace-grade lightweight aluminum (no ABS plastic); CNC-cut, gloss black powder-coated; mounts to factory rear bumper w/ no cutting or trimming; pre-drilled w/ hardware; Made in USA. Variants: AFD-VA-AL-DIFF-V3-MID (Middle Section), AFD-VA-AL-DIFF-V3-FULL (Full = middle + rear side spats), AFD-VA-AL-DIFF-V3-SPAT (Rear Side Spats).

2015–2021 Subaru | WRX STI
2015–2021 Subaru | WRX

Description

The AeroflowDynamics V3 Rear Diffuser for the 2015-2021 Subaru WRX/STI reduces drag and creates downforce by accelerating underbody airflow. Precision CNC-cut from aerospace-grade lightweight aluminum and professionally powder-coated in gloss black, it mounts directly to the factory rear bumper with no cutting or trimming required. Made in the USA.

Fits 2015-2021 Subaru WRX/STI
Made from aerospace-grade lightweight aluminum - no ABS plastic
Made in the USA
Precision CNC-cut and professionally powder-coated gloss black
Mounts directly to the factory rear bumper - no cutting or trimming required
Pre-drilled with all required hardware included
Available as: V3 Middle Section, V3 Full Rear Diffuser (middle + rear side spats), or V3 Rear Side Spats
Fitment guaranteed
Professional installation highly recommended

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