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.   Features: - 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 channel for drain plug   User reported observations and benefits: 1) Product Quality and Packaging2) Strength and Robustness3) Improved rear-end dynamics including increased traction/less wheel hop4) No noticeable increase in NVH   WILL NOT WORK WITH aFe EXHAUST! IMPORTANT: Use of the DIRS may impact the manufacturer's warranty on the differential. Purchaser assumes all responsibility for installation and use.

Differential Integration and Reinforcement System - reinforce your differential case and improve your car's IRS operation and traction with the DIRS-J! 100% satisfaction guaranteed.- Part one attaches the differential using the lower two main case bolts and the two 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.   Fitment: - 2015 and newer SRT 392 and SRT Trackhawk Jeep Grand Cherokees   Features: - American made and CNC machined T-6061 billet aluminum - OEM differential bushing - ARP (or equivalent) and Grade 10.9 hardware - 304 Stainless Steel threaded cross-member inserts - Complete kit with everything needed for installation including Loctite - Hard anodized coating in black   - Access to fill and drain plugs   Note: - Two holes will need to be drilled in the rear cross-member to install the DIRS-J   IMPORTANT: Use of the DIRS-J may impact the manufacturer's warranty on the differential. Purchaser assumes all responsibility for installation and use.