The Storia V3 Trunnion [paid link] rear shock from EXT is a high-performance component designed for serious mountain bikers seeking enhanced control and comfort. Tuning this shock properly is essential for maximizing its performance, improving your ride quality, and ensuring longevity. This guide will walk you through the steps required for installation, adjustment, and maintenance of the Storia V3 Trunnion [paid link], as well as how to troubleshoot common issues and optimize its setup.

Installation of the Storia V3 Trunnion Rear Shock

The installation of the Storia V3 [paid link] Trunnion shock requires careful attention to ensure that the shock functions optimally. Follow the steps below to install the shock properly.

Tools Required

• 5mm and 6mm hex wrenches
• Torque wrench [paid link]
• Shock mounting hardware (if not included with the shock)
• Grease (for mounting hardware)
• Allen key set
• Soft cloth or rag (to protect the shock)

Installation Steps

1. Prepare the Frame: Ensure the frame is clean and free from debris before installing the shock. Use a soft cloth to wipe down the mounting area.
2. Install the Mounting Hardware: Apply a small amount of grease to the mounting hardware. Attach the shock to the frame using the hardware, ensuring the proper orientation of the shock in relation to the frame’s mounts.
3. Secure the Shock: Use a 5mm or 6mm hex wrench to tighten the bolts that hold the shock in place. It’s important to use a torque wrench [paid link] to ensure that the bolts are tightened to the manufacturer’s recommended torque specification (usually around 8-10Nm for rear shocks).
4. Check Alignment: Ensure that the shock is aligned properly with the linkage and does not bind. It should move smoothly through its range of motion.
5. Double Check Tightness: After installation, recheck all bolts for proper torque to avoid any issues during riding.

Adjusting the Storia V3 Trunnion Rear Shock

Proper adjustment is crucial to ensuring your Storia V3 [paid link] Trunnion performs at its best. The Storia V3 features several key adjustments, including rebound, compression, and air pressure settings. These allow you to fine-tune the shock to match your riding style and terrain.

Rebound Adjustment

Rebound controls the speed at which the shock returns to its original position after compression. Setting the correct rebound is essential for maintaining control and comfort.

1. Start with the Rebound Damping: The Storia V3 features an easy-to-access rebound knob on the shock body. Start by turning the rebound knob fully clockwise to the slowest setting.
2. Test the Rebound: After riding a short distance, assess how quickly the shock rebounds. If it rebounds too quickly and causes a “bouncy” ride, slow it down by turning the knob clockwise. If the rebound is too slow, causing the shock to pack down and not fully return, speed it up by turning the knob counterclockwise.
3. Fine-Tune: Repeat the process while adjusting in small increments until you find a comfortable setting.

Compression Adjustment

Compression damping affects how the shock responds to impacts. The Storia V3 offers both low-speed and high-speed compression adjustments.

1. Low-Speed Compression: This adjusts how the shock reacts to slower, less aggressive forces, such as pedaling or small trail undulations. Set this first, starting in the middle of the range. Fine-tune based on how the shock behaves during slower, steady movements. Adjust for a more plush ride or a firmer one as per preference.
2. High-Speed Compression: High-speed compression adjusts how the shock reacts to rapid impacts, like hitting rocks or roots. Adjust this setting to avoid harsh bottom-outs during aggressive riding. Set it to a level where the shock compresses adequately but without bottoming out under heavy impacts.

Air Pressure

The air pressure in your Storia V3 Trunnion rear shock is key to achieving the right sag and overall shock feel.

1. Check Manufacturer Recommendations: EXT provides recommended air pressure ranges based on rider weight. Start with these suggested settings.
2. Adjust for Rider Weight: Use a shock pump to adjust the air pressure. Make sure to check that the shock is at the proper sag by sitting on the bike and measuring how much the shock compresses under your weight.
3. Fine-Tune for Terrain: Depending on your riding style and terrain, you may need to adjust the air pressure slightly for optimal performance. Lowering the pressure slightly can improve small-bump sensitivity, while increasing the pressure can make the shock stiffer for aggressive riding.

Maintenance of the Storia V3 Trunnion Rear Shock

Regular maintenance will ensure that your Storia V3 Trunnion remains in top condition and continues to perform at its best. Follow these steps to keep your shock functioning smoothly.

Cleaning the Shock

1. Wipe Down the Shock: After each ride, use a damp cloth to wipe down the shock body. Avoid using harsh chemicals that could damage the seals or coating.
2. Inspect the Shock: Look for any signs of wear, scratches, or damage on the shock. Pay close attention to the shock seals, as these can wear over time.
3. Check for Leaks: Periodically inspect the shock for any air or oil leaks, especially around the seals and air valves.

Servicing the Shock

1. Replace Seals When Necessary: Over time, the seals on your Storia V3 Trunnion may begin to wear. If you notice oil or air leaks, it’s important to replace the seals as soon as possible to avoid damaging the shock.
2. Full Service: Depending on usage, it’s recommended to perform a full service every 50-100 hours of riding. This typically involves draining the oil, cleaning internal components, and replacing any worn parts.

Troubleshooting Common Issues

Despite the high quality of the Storia V3 Trunnion, some common issues can arise during use. Here’s how to troubleshoot these issues:

Lack of Rebound

If the shock rebounds too quickly or too slowly, it could be due to an incorrect setting on the rebound knob or low oil levels inside the shock. Revisit the rebound settings and ensure that the shock has adequate oil. If the issue persists, it may be time for a full service.

Bottoming Out

If the shock is bottoming out frequently, it may indicate insufficient compression damping or improper air pressure. Adjust the high-speed compression setting or increase the air pressure to prevent bottoming out under aggressive riding conditions.

Air Leaks

Air leaks typically occur around the air valve or seals. Check for leaks after every ride and ensure the valve is tightened properly. If you continue to see air loss, it’s time to inspect and replace seals or get the shock serviced.

Customizing and Optimizing the Storia V3 Trunnion Rear Shock

For riders looking to extract the maximum performance from their Storia V3 Trunnion shock, customization and optimization are key.

Tuning for Terrain

Adjust your settings based on the type of riding you’re doing. For cross-country riding, a more plush, responsive shock is ideal, while downhill riders might benefit from a firmer shock with less sag and more compression damping.

Weight Considerations

Riders who are lighter or heavier than the average recommended range for the Storia V3 Trunnion may need to adjust the air pressure and compression settings further to accommodate their weight. Lowering the air pressure can increase small-bump sensitivity, while increasing the air pressure can prevent bottoming out on rough terrain.

Compatibility with Other Drivetrain Components

The Storia V3 Trunnion rear shock is compatible with a wide range of mountain bike frames, but it’s important to ensure that it pairs well with the rest of your drivetrain components, including the frame, linkage, and rear triangle. Before installation, always double-check compatibility with your bike’s design and make sure you have the correct mounting hardware for the shock.