Rebuilding your Fox Float X Performance Elite rear shock is a rewarding and cost-effective way to extend the life of your bike’s suspension. Whether you’re experiencing poor performance, excessive sag, or a loss of rebound damping, rebuilding the rear shock can restore its functionality and enhance your riding experience. This guide provides a comprehensive, step-by-step process for rebuilding the Float X Performance Elite at home.
Tools Required
- 8mm, 10mm, and 12mm wrenches
- Torque wrench [paid link] (0-200 in-lbs)
- Fox Float X seal kit (specific to the Performance Elite model)
- 15mm spanner wrench (for damper removal)
- Flat-head and Phillips screwdrivers
- Suspension oil (specific weight for your riding style)
- 4mm, 5mm, and 6mm Allen wrenches [paid link]
- Shock pump
- Isopropyl alcohol (for cleaning)
- Teflon tape (for thread sealing)
- Rags for cleaning
Step 1: Remove the Rear Shock from the Bike
Start by removing the rear shock from the bike frame. Use a 5mm Allen wrench [paid link] to remove the bolts connecting the shock to the frame. Make sure to carefully support the bike and prevent any unnecessary strain on the frame while removing the shock. Place the shock on a clean, soft surface to avoid any damage during the rebuild process.
Step 2: Drain the Air Pressure
Before disassembling the shock, it’s crucial to release any air pressure. Using a shock pump, remove the air from the positive and negative air chambers. If your shock is equipped with a bladder, ensure it is also fully depressurized. This step ensures safety and reduces the chance of unexpected pressure release during the rebuild.
Step 3: Disassemble the Rear Shock
- Remove the Air Can
Using an 8mm wrench, unscrew the air can from the body of the shock. Apply gentle, consistent pressure to avoid damaging the threads. Once the air can is free, you’ll have access to the internal components of the shock. - Extract the Damper Cartridge
The damper is held in place by a 15mm spanner wrench. Carefully use the spanner wrench to remove the damper assembly. Take note of the position and orientation of any washers or spacers for proper reinstallation. - Inspect for Internal Damage
Check the damper and air can for any signs of internal damage or wear, such as scratches or bent components. If any components are visibly damaged, they should be replaced before continuing the rebuild.
Step 4: Clean All Components
Thoroughly clean all internal and external parts of the shock. Use isopropyl alcohol and a clean rag to wipe away any old oil or dirt. It’s essential to avoid introducing contaminants into the shock, as this could lead to poor performance or even damage the shock.
Step 5: Replace the Seals and O-Rings
- Remove Old Seals
Using a flat-head screwdriver, gently remove the old seals from the air can and damper. Be careful not to scratch or damage the surfaces where the new seals will be installed. - Install New Seals
Carefully install the new seals from the Float X seal kit. Apply a small amount of suspension oil to the seals and the surface they will contact. This will help create a smooth, tight seal and reduce friction.
Step 6: Reassemble the Shock
- Reinsert the Damper Cartridge
With the new seals in place, reinsert the damper cartridge back into the shock body. Ensure that any washers or spacers are in their correct positions as you reassemble the shock. Tighten the damper using the spanner wrench, ensuring it is securely fastened but not over-tightened. - Install the Air Can
Once the damper is back in place, screw the air can back onto the shock body. Tighten it with an 8mm wrench, making sure it’s properly aligned and there are no gaps between the air can and the shock body.
Step 7: Add Suspension Oil and Air Pressure
- Add Suspension Oil
Check the shock’s maintenance manual for the recommended suspension oil weight for your riding conditions. Pour the correct amount of oil into the shock, paying attention to the specific oil volume requirements for both the air can and damper. - Pump Up the Air Chambers
Use a shock pump to add air to the positive and negative air chambers. Set the recommended air pressure based on your rider weight, terrain, and riding style. Check the shock for any signs of air leakage before moving on.
Step 8: Test the Shock
Before reinstalling the shock on the bike, test it by compressing it by hand to ensure it moves smoothly and the rebound and compression damping are functioning properly. If the shock feels sticky, or if the rebound or compression settings are not responding as expected, disassemble it again and check for any issues with the seals, oil, or damper assembly.
Step 9: Reinstall the Shock on the Bike
Once the shock has passed your testing, reinstall it on the bike. Tighten the mounting bolts to the specified torque settings to ensure a secure fit. It is essential to use a torque wrench [paid link] for this step to avoid damaging the shock or the frame.
Step 10: Set Up Suspension Performance
Once the shock is back on the bike, use a shock pump to fine-tune the air pressure and adjust the rebound and compression settings to your liking. If your shock has external adjusters, fine-tune them based on your riding conditions. Ensure that the shock provides the desired level of performance and comfort by testing it under load, such as by hopping on the bike and compressing the suspension.
Troubleshooting Common Set-Up Issues
- Shock Feels Bouncy or Too Soft
This could be due to insufficient air pressure. Check and adjust the air pressure in both the positive and negative air chambers according to the rider’s weight and riding style. - Excessive Sag
Excessive sag may indicate low air pressure or the need to replace worn-out seals or oil. Double-check the air pressure and ensure the seals are installed correctly. - Rebound Not Responding
If the rebound is too fast or too slow, the issue could lie with the damper. Check if the damper needs servicing or if the oil viscosity has changed. Consider replacing the damper if the issue persists.
Customization and Optimization for Better Performance
The Float X Performance Elite rear shock offers several opportunities for customization:
- Adjusting Compression and Rebound
The shock allows for fine-tuning both the rebound and compression settings. Experiment with these adjustments based on your riding style and terrain. Stiffer compression settings can help reduce bottoming out, while a faster rebound setting can improve the shock’s responsiveness. - Tuning for Weight and Riding Style
Tailor the shock setup to your specific weight and riding conditions. Heavier riders or those riding aggressive terrain may need higher air pressure and more oil to prevent excessive sag and bottoming out. - Upgrading to High-Performance Seals or Dampers
For riders seeking maximum performance, upgrading to higher-quality seals or dampers may offer improved performance and longer-lasting durability.
Comparison with Similar Models
The Float X Performance Elite stands out due to its advanced damping technology and user-friendly adjustments. Compared to other shocks in its category, such as the Fox Float X2, the Performance Elite provides excellent value with a slightly more affordable price tag while still offering a high level of customization. Riders who are looking for a lighter, more budget-friendly shock without sacrificing too much in terms of performance may prefer the Float X Performance Elite over more advanced models.
Additionally, compared to brands like RockShox, the Float X Performance Elite offers more precise damping control and a smoother feel for trail and cross-country riding, making it a top choice for riders looking for a reliable, high-performance rear shock.
Understanding Compatibility with Other Drivetrain Components
The Float X Performance Elite is compatible with a wide range of drivetrain components. However, it is essential to ensure the shock’s mount type and size are compatible with your bike’s frame. It’s also important to check the recommended air pressure settings based on the specific model of your bike’s suspension geometry.
The shock’s overall performance will be influenced by how well it pairs with other components like the fork and drivetrain, so ensure the suspension system is tuned to work cohesively for the best performance.