Patented Protection! Differential Integration and Reinforcement System - reinforce your differential case and improve your car's IRS operation and traction with the DIRS! 100% satisfaction guaranteed.


New two-piece transformative product from Per4Mance Development:
- Part one attaches the differential using the lower two main case bolts and the three lower case bolts to reinforce the differential.
- Part two attaches to the rear cross-member and carries an OEM differential bushing (just like the two in the rear cross-member) to add a third, triangulated integration point to "attach" to the reinforced differential.



- American made and CNC machined T-6061 billet aluminum

- OEM differential bushing

- ARP fasteners (or equivalent)/North American made galvanized bushing bolt

- P4D tool-less inserts for cross-member attachment

- Hard anodized coating in black  

- Access and chanel for drain plug


User reported observations and benefits:

1) Product Quality and Packaging
2) Strength and Robustness
3) Improved rear-end dynamics including increased traction/less wheel hop
4) No increase in NVH




100% satisfaction guaranteed, return within 30 days of receipt for a full refund.


Please see the individual item descriptions for the Billet Race Brace and AAD Wheel Hop Eliminator kit OPTIONS!



Use of the DIRS, Race Brace and AAD Wheel Hop Eliminator kit may impact the manufacturer's warranty. Purchaser assumes all responsibility for installation and use.

DIRS for 2015-newer V8 Chargers/Challengers/300 RWD

$599.00 Regular Price
$549.00Sale Price