Upgrade Your Driveline: The New 2025+ Kawasaki KRX 1000 2-Seat Model Output Shaft Upgrade

The New 2025+ Kawasaki KRX 1000 2-Seat Model Output Shaft Upgrade

The Kawasaki KRX 1000 is a legend in the rock-crawling world, known for its durability and "built-like-a-tank" reputation. However, as many seasoned riders know, every machine has its vulnerabilities. One of the most common failure points has historically been the output shaft and carrier bearing.

With the release of the 2025 Kawasaki KRX 1000, Kawasaki introduced some changes to the driveline but only for the 2-seat models. If you’ve just picked up a 2025 model and are looking to bulletproof your rig, here is everything you need to know about the new output shaft changes and how to install our updated Chromoly upgrade.

What Changed for 2025?

While the 4-seat models remain the same as previous years, the 2-seat 2025 models received a redesigned output shaft and prop shaft system [00:31].

Key differences in the OEM 2025 shaft include:

• Extended Length: The neck-down area is slightly longer [00:45].

• The "Bump": There is a noticeable "bump" on the shaft in the neck down are. If you remove your access panel and see this bump, you have the new 2025+ design [00:55].

• Spline Redesign: The rear spline section is longer and lacks the groove found on earlier models. This is because Kawasaki moved away from the "double pinch yoke" in favor of an integrated yoke and slip-yoke system with a tension spring [01:17].

Why Upgrade to Chromoly?

Even with Kawasaki's updates, the factory output shaft remains a vulnerability when you're running larger tires or riding hard. Our Upgraded Chromoly Output Shaft is designed to handle the stress that snaps OEM parts.

For the ultimate upgraded setup, we highly recommend pairing this upgrade with our Billet Upgraded Carrier Bearing [01:47]. Replacing both at once eliminates two major weak links in one afternoon.

Installation Highlights: Step-by-Step

The installation is straightforward and can be done in a home garage with standard tools. Here’s a quick overview of the process:

1. Front Diff Preparation: You’ll need to remove the four bolts holding the front differential to slide it forward about 1-2 inches. This provides the "wiggle room" needed to disengage the prop shaft [03:07]. Note: If you have a winch or A-Arm tab supports, those may need to be loosened or removed first.

2. Removing the Stock Shaft: From the rear, remove the carrier bearing bolts. You’ll give the bearing a 90-degree turn to free it from its seat, allowing you to pull the entire assembly out [06:51].

3. Assembly: Before installing the new Chromoly Output Shaft, liberally grease the splines of the output shaft and seals on both sides of the carrier bearing. Use the Loctite provided in our kit to secure the bearing onto the shaft, ensuring it is fully seated [08:30].

4. Reusing Key Parts: You will need to reuse the OEM spring and cover from the carrier bearing and output shaft. Make sure to clean out any old dirt and regrease these components before reassembly [09:23].

5. Installing the Upgraded Output Shaft and Carrier Bearing: Insert the short spline section into the transmission coupler. Make sure to line up the spline to not cause any damage. Once the splines are lined up (you should feel when they are aligned) you can start pushing the shaft in further. Next you may need to tap the output shaft into place with a hammer to make sure it goes all the way in with the o-ring. Begin hammering directly on the other end of the output shaft. Keep going until the carrier bearing ears are just passed the connection to the frame. Turn the carrier bearing and line up the ears to attach the bolts.
   
   

6. The "Two-Man" Reconnection: Reconnecting the prop shaft is easiest with two people. One person applies forward pressure on the prop shaft while the other pulls the front diff back into place until the splines lock together [13:37].

Watch the Full Walkthrough

Ready to get to work? Watch Cameron and the team at Full Access UTV walk through the entire process in our latest video:

New 2025+ Kawasaki KRX 1000 Output Shaft Upgrade | Full Access UTV

Final Thoughts

Don't let a snapped shaft ruin your weekend at the park. Whether you're rock crawling or trail riding, upgrading your 2025 KRX 1000 driveline is one of the best investments you can make for long-term reliability.

Shop the 2025+ KRX 1000 Output Shaft Upgrade and Billet Carrier Bearings at [FullAccessUTV.com]!