Description

The Polaris RZR RS1 tackles big terrain with compact agility, but its front differential often bears the brunt. When engagement gets sloppy or the front end loses precision, it’s time for a full rebuild. This Premium Front Differential Rebuild Kit gives your RS1 upgraded metal internals, stronger components and rebuild-level durability.

Inside the kit you’ll find new seals, precision bearings, a reinforced metal sprague cage, fresh roller weights, strengthened hub components, updated cage and armature plates—all built for serious performance. For those who want technical drive-train insight, our blog offers maintenance and upgrade articles.

Questions about fitment, shipping or rebuild steps? Check our FAQ page. For instructions on how to prepare your core or manage your order, visit our Help Center. Warranty coverage details are available in our warranty policy. You can also reach our team at any time through the contact page.

Many customers also explore this related option: RS1 Premium Front Differential Seal Kit 2018-2022.

THIS KIT INCLUDES

• Pinion Shaft Oil Seal
• Internal Oil Seals (x2)
• Diff Housing O-Ring
• Pinion Shaft Bearing
• Upgraded Metal Sprague Cage
• Sprague Cage Roller Weights (x24)
• 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

OEM PART NUMBERS SUPPORTED

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

Order your master rebuild kit today and restore precise 4WD engagement and long-term durability for your RS1. Every kit includes our 1-year, no-questions-asked warranty, and veterans and active servicemembers can ask about our available discounts.