Fitment

• 2012 RZR 900
• 2013 RZR 900

BULLETPROOF Front Differential Re-Build – 2012-2013 RZR 900

Say goodbye to plastic OEM failures! Upgrade to the 2nd Generation BULLETPROOF Front Differential Rebuild by Side by Side Sports—engineered to dominate extreme terrain and solve your four-wheel drive issues once and for all.

Included in the BULLETPROOF Package

• Billet Torsion Spring Retainer – Reinforced strength where it counts
• Upgraded 6 Tooth Billet Sprague Cage – Built to withstand hardcore use
• 6 Tooth 4130 Cage Plate – Premium durability and performance
• High-Quality Bearings & Seals – For smooth, quiet, and reliable operation
• Custom Shims – Set perfect lash on ring & pinion gears
• Bench Load Testing – Fully tested before return shipment

Eliminate Common 4WD Problems

Whether you're stuck in 4WD or can’t get into it, this front diff rebuild is the fix you’ve been looking for. Replace unreliable stock parts with precision-engineered billet components and hit the trails with confidence.

How It Works

Ship your differential to our certified techs. We’ll install the upgraded parts, fine-tune the setup, and bench load test it before sending it back—battle ready.

*** You are responsible for shipping the diff to us! ***

*** Diff ships with 2 oz of Justice Bros gear oil treatment – be sure to top off with oil before use! ***

🛠️ Don't settle for weak OEM parts— get the BULLETPROOF differential rebuild and feel the difference. Available now at SideBySideSports.com