Difflow 5-Element Railer (Jr.) Rear Diffuser for Subaru WRX & STI

  • Sale
  • Regular price $629.00

  • Fits 2012-2014 Subaru WRX & STI
  • All necessary mounting hardware included
  • Compatible with most exhaust systems
  • 20 Minute installation
  • Built from Aircraft-grade Aluminum and Powdercoated Satin Black
  • Weighs only 16LBS (8KG)
  • Built strong and durable to handle curb rash and track abuse like a champ!
  • Highest quality diffuser on the market for Subaru WRX and STI!


Diffuser body is flush with the rear of the car and is designed specifically to match the rear bumper of the GV WRX and STI. The Railer (Jr.) is engineered to reduce lift (thus increasing downforce) on the rear end of your car by directing high pressure air to a low pressure environment (behind your car). All 5 fins extend the full length of the Diffuser to immediately start channeling air from underneath your car under your exhaust and straight out the rear of the car. The diffuser is mounted to the rear of the control arms and to the exhaust hangers using all-included brackets and hardware designed specifically for this diffuser. The rear brackets attached to your exhaus hanger are suspended with dense rubber grommets to prevent any vibration


Weight: 16 LBS

Cutting/Drilling Required: None

Compatibility: 2012-2014 (GV) Subaru WRX and STI Sedans. Will not fit Hatchbacks!

Description: Give your WRX that up to date look with our aggressive 5-Element Railer (Jr.) Rear Diffuser! It's street friendly and the body of the diffuser extends all the way up to the rear frame.