ALREADY HAVE A STAGE 2 DIFF?
WANT TO UPGRADE FROM THE SPOOL TO AUTO LOCKER
 
This is an UPGRADE that allows you to remove the STAGE 2 SPOOL and insert the new AUTO LOCKER CARRIER
 
THIS IS NOT A COMPLETE KIT (No side covers, no bearings, seals, shims, fasteners)
 
Run Rear Axles in your Front X3 Smartlock Diff
Billet Side Covers - Huge Bearings
500% More Carrier Support
KOH Winner 2026
Automaticaly unlocks in 2WD/Cornering
No Wires
No Air Lines
Huge Tapered Roller Bearings (500% more carrier support)
Ring Gear Load Bolt
Adjustable Backlkash
Adjustable Bearing Preload
 
Remove your Stage 2 spool and install the new AUTOMATIC Locking/Unlocking carrier (Uses your Proformance Billet Side Covers, Seals, Shims and Fasteners)
 
IN STOCK NOW !!