All Balls 8 Ball Extreme Duty Rear Axle – 2016–2021 Polaris RZR

Upgrade your Polaris RZR with the All Balls 8 Ball Extreme Duty Rear Axle (AB8-PO-8-339)—engineered for riders who push their machines to the limit and demand maximum durability, smoother performance, and unmatched CV strength.

Built to outperform OEM and competing aftermarket axles, this axle is the perfect solution for RZR owners running big tires, high-horsepower tunes, or aggressive suspension setups across mud, rocks, dunes, and desert terrain.

🔥 Key Performance Features

✔ 20% Stronger Than OEM Axles

Resists bending, breakage, and fatigue during hard launches, jumps, and uneven terrain.

✔ 50% Stronger Than Competing Aftermarket Axles

Oversized CV components and premium engineering create industry-leading performance.

✔ Up to 12× Longer Lifespan Than Standard Aftermarket Axles

Heat-treated internals and enhanced CV construction ensure exceptional longevity.

✔ Eight Precision Ball Bearings

Provides smoother CV movement and improved torque handling under extreme loads.

✔ Up to 35% Larger CV Cages & Races

Massively increases CV strength, reduces binding, and improves articulation.

✔ ISO 9001–Certified Manufacturing

Ensures consistent quality, performance, and reliability in harsh off-road conditions.

✔ Upgraded Chromoly Axle Shaft

Thicker, stronger, and designed to handle extreme stress without adding unnecessary weight.

✔ Low-Profile Alloy Clamps

Corrosion-resistant design provides secure long-term CV boot protection.

⭐ Fitment — Rear Left or Right (Direct OEM Replacement)

Fits 2016–2021 Polaris RZR Models, including:

• RZR XP 1000
• RZR XP Turbo
• RZR XP 4 1000
• RZR XP 4 Turbo
• RZR Turbo S (select trims)
• Trail & High Lifter editions
• Additional RZR models using rear axle spec AB8-PO-8-339

If needed, I can generate a full model-by-model fitment chart.

⭐ Why Upgrade to the All Balls 8 Ball Extreme Duty Rear Axle?

This axle is the ideal upgrade for Polaris RZR owners who:

• Ride aggressively
• Run oversized tires
• Use upgraded suspension
• Race or tackle extreme terrain
• Need maximum dependability

When OEM and standard aftermarket axles fail, the All Balls 8 Ball design keeps you moving—offering smoother CV operation, drastically improved strength, and superior torque handling for high-performance builds.