Bombproof Front Differential Rebuild – Turbo S / RS1 / PRO XP
Upgrade your Polaris 4WD system with the Bombproof Front Differential Rebuild—the strongest solution available for your Turbo S, RS1, or PRO XP. Built to eliminate weak OEM internals, this rebuild kit features:
- A billet torsion spring retainer
- Steel sprague cage
- 6-tooth 4130 chromoly cage plate
- Upgraded bearings and seals
If you’re stuck in 4WD, can’t engage 4WD, or dealing with front diff noise and play, this rebuild kit is the bulletproof fix you’ve been waiting for.
Included in the Rebuild:
✔️ Billet Torsion Spring Retainer
✔️ Steel Sprague Cage
✔️ 6-Tooth 4130 Cage Plate
✔️ Upgraded Bearing & Seal Kit
✔️ Custom Shimming for Gear Lash
✔️ Full Bench Load Test
Why Choose Bombproof:
🔥 Eliminates common 4WD failures
🛠 Stronger than stock—built for abuse
🔧 Professionally assembled and tested by certified techs
⚙️ Designed for extreme off-road and racing conditions
Send-In Service Notice:
📦 You must ship your front differential to SandCraft'sfacility.
🧴 SandCraft uses high-quality assembly lube during build/test—fill with oil upon return.
Vehicle Fitment:
Polaris RZR Turbo S
- 2018, 2019, 2020, 2021, 2022
Polaris RZR RS1
- 2018, 2019, 2020, 2021, 2022
Polaris RZR XP PRO
- 2020, 2021, 2022, 2023, 2024
Ensure long-lasting 4WD performance and confidence on every trail with the Bombproof Front Diff Rebuild Kit—a true upgrade over Polaris OEM design.
