Fitment Information

• Subaru WRX/ STI (2015, 2016, 2017, 2018, 2019, 2020, 2021) 

Features and Specs:

• Paint-matched finish: Eliminates the need for separate painting; ensures color matching to your OEM paint so the diffuser blends seamlessly.
  
  • Ice Silver Metallic (G1U) 
    
  • Crystal White Pearl (K1X) 
    
  • Pure Red (M7Y)
    
• A1 Style design: Aggressive diffuser styling that enhances the look of the rear bumper, giving a more sporty, finished lower rear look.
  
• Included installation hardware: Comes with screws/hardware so installation is straightforward.
  
• Easy install: Designed for bolt-on fit, includes self-tapping screws and provisions for attachment to trunk/spare tire area; secure even at higher speeds.
  
• Aerodynamic appearance + somewhat functional: While primarily aesthetic, the diffuser can help airflow under rear bumper, especially if other aero parts are installed (wings, side skirts etc.).
  
• “Super easy install”: According to vendor listings: minimal modifications, just align and bolt in.
  

NOTE: Images shown are not an exact representation of product. Product will be the color you select. 

Product Description

Upgrade the rear of your 2015-2021 Subaru WRX / STI with the OLM A1 Style Paint-Matched Rear Diffuser. This is a diffuser designed to be paint-matched to your vehicle’s color, giving a clean, integrated look while adding aggressive styling and aerodynamic enhancement. It mounts under the rear bumper using included hardware, featuring an A1-style design that fills the lower rear region for a more finished, performance-inspired appearance.

Each variant (G1U, K1X, M7Y) is the same basic diffuser design; the difference lies in the finished paint color to match specific factory colors (so you don’t need to have it painted separately).