Enhance rear-end stability and underbody airflow on your Challenger with this Deluxe Rear Diffuser engineered for all 2015–2023 Dodge Challenger models. Designed as a fully functional aerodynamic component, this diffuser improves airflow exiting the differential area while adding meaningful downforce at speed.
The design features an aluminum belly pan to smooth and diffuse airflow, paired with an integrated rear wing that provides additional downforce. The diffuser assembly is attached to durable HDPE panels with an automotive-grade finish, delivering both performance and long-term durability.
This diffuser bolts directly to the factory rear valance as an add-on upgrade and includes all required mounting hardware. Compared to the standard Challenger diffuser, the Deluxe version features fins that are approximately 1.75” taller, increasing aerodynamic effectiveness.
Downforce becomes noticeable at 75+ MPH, resulting in a more planted and stable feel during spirited driving or track use.
Vehicle Fitment
- 2015–2023 Dodge Challenger
- Fits all trim levels
Hardware Update (Important)
This diffuser now ships with hardware compatible with both threaded and unthreaded rear differential cross braces.
- If your rear differential cross brace is unthreaded, a rivet nut (Rivnut) tool is required to install the supplied inserts
- Please verify your cross brace type prior to installation
Ground Clearance Warning
- This diffuser sits low and close to the ground by design
- Will likely contact the ground on steep driveways or inclines, even on a stock-height vehicle
- Vehicles with lowering springs or air suspension should expect scraping during sharp angle transitions
- This product prioritizes function over clearance.
Finish Options
Standard Aluminum
- HDPE diffuser and fins
- Raw aluminum attachment plate
Black Powder-Coated Aluminum
- HDPE diffuser and fins
- Black powder-coated aluminum attachment plate
* Note: Raw aluminum mounting plates may show light scratches or machining marks from manufacturing. These areas are not visible once the diffuser is installed.
Construction Details
- HDPE diffuser body and fins
- Aluminum belly pan and attachment plate
- Designed to properly diffuse airflow from the differential rearward
- Functional aerodynamic design, not cosmetic-only
Shipping & Lead Time
- Built to order
- Standard Aluminum: 7–10 business days before shipment
- Black Powder Coat: 14–21 business days before shipment
