All Balls Racing Mule SX & 610 Front Diff Bearing Kit (2005-2026)

The All Balls Racing front differential bearing and seal kit for the Kawasaki Mule SX and Mule 610 replaces worn factory parts to cure differential whine, play and oil leaks. It is built to All Balls' application data as a direct replacement, so it goes back in where the original came out and restores quiet, leak-free operation.

Searching for Kawasaki mule sx front differential bearings, Kawasaki mule sx front differential rebuild kit or Kawasaki mule sx front differential seals? Use the exact-model fitment list below to confirm this kit matches your machine.

Kit contents per All Balls: ball bearing x3, needle bearing x1, seal x3, snap ring x2.

Key Features

• Kit contains all the bearings and seals required to repair the differential, per All Balls
• Replaces worn bearings that cause whine, growl or play
• Fresh seals stop gear oil leaks at the input and output shafts
• Built to All Balls' application data for the listed machines

Built To Solve: Worn Kawasaki Mule SX and Mule 610 Front Differential Bearing And Seal Kit Problems

• Whine or growl from the front differential that changes with speed
• Play in the front differential input or output shafts
• Gear oil leaking from worn seals
• Bearings worn by water crossings and mud

Best For: Kawasaki Mule SX and Mule 610 Owners Rebuilding The Differential

• Mule SX owners rebuilding the front differential
• Higher-hour trail and work machines
• Riders who cross water and mud often
• Owners doing their own drivetrain and suspension service

Specifications

• Brand: All Balls Racing
• Product type: front differential bearing and seal kit
• Contents: Ball bearing x3
• Contents: Needle bearing x1
• Contents: Seal x3
• Contents: Snap ring x2
• Kit type: front differential bearing and seal kit
• Position: front
• Country of origin: China
• Manufacturer Part Number: 25-2016

Fitment

All Balls lists this front differential bearing and seal kit for the following UTVs:

• Kawasaki Mule 610 4x4 (2005-2008, 2010-2016)
• Kawasaki Mule 610 4x4 VIN JK1AFEA1 9B547191 and lower (2009)
• Kawasaki Mule 610 4x4 VIN JK1AFEA1 9B547192 and above (2009)
• Kawasaki Mule 610 4x4 XC (2010-2015)
• Kawasaki Mule SX (2019-2020)
• Kawasaki Mule SX 4X4 FI (2019-2026)
• Kawasaki Mule SX 4X4 FI FE (2025)
• Kawasaki Mule SX 4X4 SE FI (2020-2021)
• Kawasaki Mule SX 4X4 XC Camo FI (2019-2021)
• Kawasaki Mule SX 4X4 XC FI (2019-2026)
• Kawasaki Mule SX 4X4 XC LE FI (2019-2026)

All Balls also lists this part for some ATV models; D2D lists UTV fitment only.

Fitment is based on the manufacturer's application data. Fitment is not guaranteed on unlisted models; confirm your exact year, model and package before ordering.

FAQ

How do I know my Mule SX front differential bearings are bad?

A whine or growl that rises with speed, play in the input or output shafts, or gear oil leaking around the seals are the usual signs. Metal in the drained gear oil is another warning.

What comes in the kit?

All Balls lists three ball bearings, one needle bearing, three seals and two snap rings per kit.

Which models does it fit?

All Balls lists Kawasaki Mule 610 4x4 (2005-2008, 2010-2016); Kawasaki Mule 610 4x4 VIN JK1AFEA1 9B547191 and lower (2009); Kawasaki Mule 610 4x4 VIN JK1AFEA1 9B547192 and above (2009); Kawasaki Mule 610 4x4 XC (2010-2015); Kawasaki Mule SX (2019-2020); Kawasaki Mule SX 4X4 FI (2019-2026); Kawasaki Mule SX 4X4 FI FE (2025); and more, see the full fitment list below.

Is installation difficult?

The differential comes out of the machine and is split so the bearings can be pressed and the seals driven in. This is a shop-level job; follow your service manual and refill with the correct gear oil. All Balls does not publish an install sheet for this kit.

Which position does it fit?

All Balls lists this kit for the front differential on the machines it covers.

Should I buy the full kit or just seals?

If the differential only leaks and the bearings are quiet and tight, the All Balls seal-only kit may be enough. If there is noise or play, the bearings need replacing and this full kit covers both.

Why All Balls Racing

All Balls Racing specializes in replacement bearings, seals, steering and suspension rebuild parts for ATVs and UTVs, packaged by application so the right parts arrive for the job. Its kits are built as direct replacements for the factory parts they cover.

Complete Your Mule SX Differential Rebuild

Confirm your exact year and model in the fitment list before ordering. Replace the matching seals and check the axles and CV boots while the differential is out.