The Storia V3 [paid link] rear shock from EXT is known for its high performance and durability, making it a popular choice for serious riders who demand the best in suspension technology. Regular maintenance is key to ensuring optimal performance, and one of the most crucial tasks is changing the oil inside the shock. Over time, shock oil degrades, which can lead to a loss in performance, reduced responsiveness, and increased wear. This guide will walk you through the necessary steps to change the oil in your Storia V3 [paid link] rear shock, ensuring that it continues to deliver smooth, controlled suspension for all your riding needs.

Tools Required

• 5mm hex wrench
• 10mm socket wrench
• Torque wrench [paid link]
• Small flathead screwdriver
• Shock oil (suitable for EXT Storia V3)
• Grease (for seals and O-rings)
• Seal driver (if necessary)
• Shock pump
• Clean rag or towel
• A shock absorber work stand or a secure mounting point

Preparing for the Oil Change

Before diving into the oil change, it’s important to properly prepare your workspace and ensure that you have all the necessary tools at hand. Cleanliness is critical when working on suspension components to avoid introducing dirt and debris into the shock. Make sure you have a clean, well-lit area to work in, and set up your shock absorber securely to avoid accidental damage during the process.

Step 1: Remove the Shock from the Bike

1. Lift the bike and secure it in a stand if available.
2. Use a 5mm hex wrench to remove the bolts securing the shock to the frame.
3. Carefully detach the shock, ensuring you keep track of any washers or spacers that might come loose during removal.

Step 2: Disassemble the Shock

Once the shock is removed from the bike, place it on a clean, soft surface to avoid damaging any components. Begin the disassembly process:

1. Remove the air valve cap if applicable, using a small flathead screwdriver to carefully pry it off.
2. Use the 10mm socket wrench to loosen the damper shaft assembly.
3. Carefully remove the damper shaft from the shock body.

Step 3: Drain the Old Oil

With the shock components disassembled, the next step is to drain the old oil. Here’s how to do it:

1. Position the shock so that the oil drains into a container. You may need to rotate the shock to ensure all oil is removed from the internal chamber.
2. Allow the oil to drain completely. Depending on how long it has been since the last oil change, this could take a few minutes.

Cleaning and Preparing Components

Step 4: Clean the Shock Components

After draining the old oil, it’s time to clean the shock components to remove any dirt, debris, or old grease.

1. Use a clean rag or towel to wipe down the shock body, damper shaft, and other components.
2. Check the seals for wear. If the seals look damaged or cracked, now is the time to replace them to ensure the shock remains airtight and functions properly.
3. Apply a small amount of grease to the seals, paying special attention to the main seal and any O-rings.

Step 5: Inspect for Wear and Damage

This is the ideal time to inspect your shock for any signs of wear or damage. Look closely at the shock body, damper, and other internal parts for any visible cracks, scratches, or significant wear. If you notice any serious damage, consider replacing the affected parts before reassembling the shock.

Reassembling the Shock

Step 6: Add New Oil

Now that the shock is clean and all parts are inspected, it’s time to add fresh oil. Use the recommended shock oil for your Storia V3, ensuring you use the correct type and weight for your specific riding style and conditions.

1. Fill the shock body with the new oil until it reaches the specified level.
2. Use a syringe or pour the oil carefully to avoid spilling.

Step 7: Reinstall the Damper Shaft

Once the oil is added, carefully reinstall the damper shaft into the shock body.

1. Ensure the shaft is aligned properly with the shock body and that it is seated securely.
2. Tighten the shaft assembly using the 10mm socket wrench. Make sure the torque specifications are followed to avoid overtightening, which can damage the threads.

Step 8: Reassemble the Air Valve and Other Components

1. Reinstall the air valve cap, ensuring it is seated properly and secure.
2. Check all other components, such as the shock bushings and mounts, for proper alignment and secure attachment.

Testing and Adjusting the Shock

Step 9: Reinstall the Shock on the Bike

Once the shock is fully reassembled, it’s time to reinstall it on the bike:

1. Align the shock with the mounting points on the frame and secure it with the appropriate bolts.
2. Use the 5mm hex wrench to tighten the bolts, following the recommended torque specifications.

Step 10: Set the Pressure

Before riding, make sure to set the correct air pressure in the shock. Use a shock pump to inflate the shock to the manufacturer’s recommended PSI based on your weight and riding style. After inflating, check for any air leaks, and recheck the pressure after a short test ride.

Final Inspection and Performance Check

Step 11: Perform a Final Inspection

Once everything is reassembled, take the time to inspect the shock for any leaks, improper alignment, or loose bolts. Ensure that the shock operates smoothly by manually compressing it and checking for even rebound.

Step 12: Test Ride and Fine-Tune Settings

Perform a test ride to assess the shock’s performance. Pay attention to how it handles bumps, drops, and other trail features. If necessary, fine-tune the rebound and compression settings to match your riding preferences.

Troubleshooting Common Issues

Issue 1: Rebound Not Functioning Properly

• Cause: The oil inside the shock may be too thick, or there could be air trapped in the system.
• Solution: Check the oil viscosity and ensure that the shock is properly bled to remove any air bubbles. If the problem persists, inspect the damper components for wear.

Issue 2: Shock Leaking Oil

• Cause: Damaged seals or improper reassembly.
• Solution: Replace any worn or damaged seals and ensure that all parts are correctly assembled with the proper torque.

Issue 3: Poor Performance or Sagging

• Cause: Incorrect oil level, inadequate air pressure, or worn-out internal parts.
• Solution: Recheck the oil level, inflate the shock to the correct pressure, and inspect the shock internals for wear. Consider replacing the damper or air can if the issue persists.

Conclusion

Changing the oil in your Storia V3 rear shock is a necessary part of maintaining the shock’s performance and longevity. By following the steps outlined in this guide, you can ensure that your shock is operating at its best, providing you with the smooth, controlled suspension that EXT is known for. Regular maintenance will keep your shock functioning optimally, allowing you to ride with confidence on any trail.