BJ's Garage 570,  Chrysler 300, Dodge Magnum (Defender Series Comp Diffuser)

Made from 3003 Aluminum, Etched and Painted Matte Black. The Science: The Defender Series Comp Diffuser will improve your car's aerodynamic properties by enhancing the transition between the high-velocity airflow underneath the car and the much slower freestream airflow of the ambient atmosphere. This diffuser acts as an expansion chamber to manage the air as it exits from underneath the car and reintegrates it with higher-pressure ambient air. Smoothing this transition reduces turbulence and drag in the vehicle's wake and improves airflow under the vehicle.The laws of fluid dynamics state that as the velocity of air increases, its pressure decreases. An F1 car is low to the road, and thus its flat bottom acts as a venturi to pinch the air and force it to move faster relative to the air above the car. This pressure differential manifests as increased load on the tires and sucks the car closer to the road providing a more stable environment in Higher Speed Applications.

WEIGHT: 2.46 LBS
All Hardware Supplied

 Our Price: $322 +Shipping 
vs.
Competition Pricing:  $399-$450 + Shipping
FOR OFFROAD USE ONLY,
PROFESSIONAL INSTALLATION PREFERRED
RESONATOR DELETES, MUFFLER DELETES, AXLE BACK EXHAUST SYSTEMS,  AND MOST CAT-BACK SYSTEMS MAY NOT EFFECT MOUNTING DIFFUSER.


  1. Managing Director
  2. Managing Director
2005-2008 Dodge Magnum, 2005-2017 Chrysler 300
(2-4 Week Lead Time)

Quick Tips/ Q/A
-Need Installation Instructions? Check out our Installation Video Tab linking you directly to our YouTube Channel
-Looking for an Installer near you, Check out our Authorized Installer Listing Tab
-Need to contact us directly about your order, perhaps help with your Installation, or would like to become a distributor/Authorized Installer please Contact us!

Sales/Customer Service Department:
Ashley Ochwat
Sales Representative
sales.bjsgarage570.ashley@gmail.com

Product Development Department:
Bryan J. Causer
Motorsports Product Developer
bryancauser7@gmail.com
(570) 677-2569