Swingarm & Linkage Bearing Maintenance Guide

April 30, 2025

ByWILLY JASTRZEMBSKIS 0 Comments

Swingarm & Linkage Bearing Maintenance Guide

Your dirt bike’s swingarm and linkage bearings are vital to rear suspension movement, absorbing shocks and ensuring smooth articulation across rugged terrain. These components are often overlooked but endure some of the harshest riding conditions.

This guide covers how to check, clean, lubricate, and maintain your swingarm and linkage bearings for better suspension performance and longevity.

Why Swingarm & Linkage Bearings Matter

These bearings allow the rear suspension to move freely and consistently. Without regular maintenance, they can seize, wear prematurely, or develop play—leading to poor handling and expensive damage.

Proper care ensures:

• Smooth suspension movement
• Better traction and rear-end control
• Extended bearing and linkage lifespan
• Fewer breakdowns and better ride feel

Signs of Worn or Dry Bearings

Check for these symptoms during or after rides:

• Excessive play in the rear wheel or swingarm
• Creaking or clunking sounds from the rear end
• Stiff rear suspension movement
• Visible rust or dry areas around linkage bolts
• Uneven suspension rebound or feel

If you notice any of the above, it's time for inspection and service.

Tools and Supplies You’ll Need

• Torque wrench
• Socket and Allen key set
• Grease (waterproof, high-pressure bearing grease)
• Cleaning solvent or degreaser
• Bearing puller or punch (if replacing bearings)
• Rubber or nylon mallet
• Rags and gloves
• Service manual for torque specs

Step-by-Step: Bearing Inspection & Maintenance

1. Remove the Swingarm and Linkage

• Place your bike on a stand with the rear wheel off the ground.
• Remove the rear wheel.
• Remove the chain from the front sprocket (or loosen).
• Unscrew the linkage bolts and swingarm pivot bolt.
• Carefully slide out the swingarm and linkage.

2. Inspect the Bearings

• Rotate and move each bearing by hand.
• Bearings should feel smooth with no grinding or notchiness.
• Look for signs of water ingress, rust, or worn seals.
• Wiggle the inner sleeves—any movement may indicate worn bearings or spacers.

3. Clean the Linkage and Swingarm

• Remove old grease and debris with a solvent or degreaser.
• Wipe thoroughly with a clean rag.
• Dry completely before re-greasing.

4. Grease and Reassemble

• Apply fresh, high-quality waterproof grease to all bearings and pivot points.
• Don’t overpack; just coat the bearing and sealing surfaces evenly.
• Reinstall the linkage and swingarm.
• Torque all bolts to manufacturer specifications.

5. Replace Bearings if Necessary

If you find excessive play, rust, or seized movement:

• Use a bearing punch or press to remove the old bearings.
• Clean the housing thoroughly.
• Press in new bearings squarely and fully seated.
• Reapply grease before reassembly.

Pro Tips for Long-Term Bearing Health

• Grease every 15–20 hours of ride time, or more often in wet/muddy conditions.
• Avoid pressure washing directly on bearing areas.
• Store your bike dry to avoid moisture buildup.
• Replace worn seals to prevent dirt and water from entering the bearing area.
• Use OEM or high-quality aftermarket bearings for best fit and durability.

Final Thoughts

Swingarm and linkage bearings are crucial to maintaining rear suspension performance. Regular inspection and lubrication not only improve your bike’s feel on the trail but also prevent expensive long-term repairs.

For bearing kits, service tools, or professional suspension maintenance, trust Pro Power MX—your dirt bike specialists.