Description

The Polaris RZR RS1 puts serious load on the front differential, especially during tight turns, hard landings and aggressive 4WD engagement. When the diff starts slipping, grinding or losing consistent engagement, this Premium Front Differential Master Rebuild Kit gives you the upgraded components needed to bring back strength and reliability.

This master kit replaces the weaker OEM plastic sprague components with upgraded metal parts built for long-term use. You also receive fresh seals, new bearings and stronger internal gears. Because the kit includes the input pinion shaft, main pinion gear, center output hub, cage plate, armature plate and hardware, it gives the RS1 a full internal overhaul instead of only repairing the common wear points. Riders comparing options often look at the lighter RS1 Premium Seal Kit as well.

If you need help with installation or ordering, start with our FAQ page. Every parts kit comes with our 1-year, no-questions-asked warranty. Coverage details are listed in our warranty policy. For shipping steps or rebuild preparation, the Help Center is a great resource. You can reach our team directly through the contact page, and our blog offers more drivetrain tips.

WHAT’S INCLUDED

• Pinion Shaft Oil Seal
• (2) Internal Oil Seals
• Diff Housing O-Ring
• Pinion Shaft Bearing
• Upgraded Metal Sprague Cage
• (24) Sprague Cage Roller Weights
• Differential Center Output Hub
• Upgraded Metal Cage Plate
• Upgraded Metal Armature Plate
• Differential Retainer Ring
• Input Pinion Shaft
• Differential Main Pinion Gear

FITMENT

• 2018–2022 Polaris RZR RS1

COMPATIBLE OEM DIFFERENTIAL PART NUMBERS

• 1337228
• 1337145
• 1334432
• 1334398
• 1334363
• 1334306
• 1334305
• 1334183
• 1334141
• 1333877

Upgrade your RS1 with proven, long-lasting differential components. Order your master rebuild kit today. Veterans and active servicemembers can also ask about the discounts we proudly offer.