The E-Storia V3 [paid link] rear shock from EXT is an advanced piece of suspension technology designed for mountain bikers who demand precision, comfort, and performance. Over time, however, like all suspension components, it will require maintenance to keep it performing at its best. Rebuilding the E-Storia V3 [paid link] rear shock at home is entirely possible with the right tools and knowledge. This guide will walk you through the process of disassembling, servicing, and reassembling the E-Storia V3 [paid link], providing a comprehensive approach to keep your shock working smoothly.
Tools Required
- Torque wrenches
- Shock pump
- 2.5mm and 5mm Allen wrenches [paid link]
- 8mm socket
- Suspension oil (specific to the E-Storia V3 [paid link])
- Sealant grease
- Cleaning solvents (rubbing alcohol or similar)
- Internal seal kit (specific to the E-Storia V3 model)
- O-rings and seals (if replacing)
- Seal driver (if necessary)
- Plastic pick tool (for removing seals)
- Towel or clean cloth
Disassembling the E-Storia V3 Rear Shock
Step 1: Remove the Shock from the Bike
Before starting any work, remove the E-Storia V3 rear shock from your bike. This typically involves using a 5mm Allen wrench [paid link] to detach the shock from the frame at both the upper and lower mounting points. Ensure the bike is stable during this process, ideally supported on a stand, to avoid damage.
Step 2: Clean the Shock
Thoroughly clean the shock using a solvent and a clean cloth to remove any dirt and grime. Pay attention to the body and the pivot areas. A clean shock will ensure that you avoid contaminating the internal components during the rebuild.
Step 3: Remove the Air Valve and Remove the Air Pressure
Using a shock pump, release all air from the E-Storia V3 rear shock by removing the air valve. Press the valve down gently to ensure no pressure remains in the system. This step is crucial for safety and to avoid damage to the internal components.
Step 4: Disassemble the Shock Body
Use a 2.5mm Allen wrench [paid link] to unscrew the small bolts that secure the external adjustment dials on the shock. Depending on your model, you may need to remove the rebound and compression adjustment knobs. Make sure to note their positions for reassembly.
Step 5: Remove the Shock’s Internal Parts
Once the external parts are removed, the next step is to gently slide out the internal components such as the damper and spring assembly. Depending on your model, the spring may be under tension, so proceed carefully. If any components are stuck, avoid using excessive force. Instead, use a plastic pick tool or similar tool to gently ease them out.
Servicing the E-Storia V3 Rear Shock
Step 1: Inspect and Replace Seals and O-rings
With the shock components fully exposed, inspect all seals and O-rings for wear. The E-Storia V3 has several critical seals that prevent contaminants from entering and ensure smooth operation. If any seals are damaged, replace them with new parts from the internal seal kit. When replacing seals, always ensure they are properly lubricated with the specified sealant grease to prevent damage during installation.
Step 2: Clean and Re-lubricate the Components
Using a clean cloth and suspension oil, wipe down all internal parts, including the damper, piston, and any other metal parts. Pay careful attention to the shock shaft and its bearing surfaces. Re-lubricate these areas with fresh suspension oil to ensure proper damping and smooth operation. Use only the recommended suspension oil for the E-Storia V3 to avoid damaging the components.
Step 3: Check for Damage
At this point, inspect the shock body, shaft, and damper for any visible damage or wear. If any parts are bent, cracked, or worn beyond acceptable limits, consider replacing them. Failure to replace damaged parts may result in compromised performance and even further damage.
Step 4: Clean and Re-lubricate the Spring Assembly
If you have removed the spring assembly, clean it thoroughly and lubricate it with a light layer of oil. This will help maintain smooth movement and reduce wear on the shock internals. Be sure to also inspect the spring for any signs of cracking or breakage.
Reassembling the E-Storia V3 Rear Shock
Step 1: Install New Seals and O-rings
Start by installing the new seals and O-rings that you previously inspected and lubricated. Carefully insert them into their respective positions. Make sure that all seals fit snugly in place to ensure they will function properly.
Step 2: Reassemble the Internal Components
Once the seals are in place, carefully slide the damper and other internal components back into the shock body. Pay close attention to the orientation of each component, following the manufacturer’s guidelines or the notes you made during disassembly. Avoid forcing any parts into place.
Step 3: Reattach the External Adjustments
With the internal components in place, reattach the rebound and compression adjustment dials. Tighten them to the manufacturer’s recommended torque specifications. Use a torque wrench [paid link] to ensure you don’t over-tighten or under-tighten the adjustment screws, which could affect performance.
Step 4: Reinstall the Air Valve
Before you reinstall the air valve, ensure that the internal pressure chamber is properly seated and that the seals are intact. Once ready, reinstall the air valve and make sure it is tightened securely. Use the shock pump to add the recommended air pressure, adjusting to your personal preferences or manufacturer specifications.
Final Checks and Testing
Step 1: Inspect for Leaks
After reassembly, check the shock for any signs of air leaks around the seals and the air valve. If you notice any leaking air, disassemble the shock again, inspect the seals for damage, and replace them as needed.
Step 2: Reinstall the Shock on the Bike
Once everything is reassembled and leak-free, reinstall the E-Storia V3 rear shock onto your bike. Make sure the mounting bolts are tightened to the correct torque specification. Recheck the shock’s functionality by moving the suspension through its travel and ensuring smooth movement.
Step 3: Test Ride and Fine-Tune
Take your bike for a test ride to evaluate the shock’s performance. Pay attention to how it responds to bumps, jumps, and rough terrain. If needed, fine-tune the rebound and compression settings for your specific riding style and preferences.
Troubleshooting Common Issues
Low or No Air Pressure
If your E-Storia V3 rear shock loses air pressure quickly, the issue could be due to a damaged seal, valve, or a crack in the shock body. Inspect all components for visible damage and replace any faulty parts.
Poor Performance After Rebuild
If the shock doesn’t perform as expected after the rebuild, it could be due to improper air pressure settings, incorrect oil levels, or poorly installed seals. Double-check each of these elements, ensuring everything is within the manufacturer’s specifications.
Comparison with Similar Rear Shocks
The E-Storia V3 is designed for high-performance mountain biking and is known for its precise damping and adjustable features. When compared to other high-end shocks like the Fox Float X2 or RockShox Super Deluxe, the E-Storia V3 stands out for its smoothness and adjustability. However, it does require regular maintenance and rebuilding, which might be more complex compared to simpler shock designs. Riders who prioritize customization and performance will benefit the most from the E-Storia V3’s capabilities, whereas riders looking for lower-maintenance options might prefer shocks with fewer adjustment settings.
Compatibility with Other Drivetrain Components
The E-Storia V3 rear shock is designed to work seamlessly with a variety of mountain bike frames, especially those equipped with advanced suspension systems. It’s crucial to verify compatibility with your bike’s frame and other drivetrain components, such as the linkage and pivot systems, to ensure optimal performance. Compatibility may vary depending on frame type, wheel size, and suspension layout, so always consult with a professional mechanic if you’re unsure.
Rebuilding and maintaining the E-Storia V3 rear shock requires attention to detail and proper tools, but by following these steps, you can keep your shock in top condition, ensuring smooth and consistent performance.