Step-by-Step: Rebuilding Your ZEB Select+ Suspension Fork

Posted on
in Uncategorized

The RockShox ZEB Select+ suspension fork is built to handle aggressive riding with excellent performance and durability. Whether you’ve encountered issues such as loss of rebound control, stiffness, or just general wear over time, rebuilding your ZEB Select+ fork is a necessary skill for any dedicated rider. This detailed guide will take you through the steps to rebuild the ZEB Select+ fork, ensuring it performs at its best after every ride.

Tools Required

  • 8mm, 10mm, and 15mm wrenches
  • Torque wrench [paid link] (3-15 Nm)
  • T25, T30, and T40 Torx bits
  • Allen wrenches [paid link] (5mm, 6mm, and 8mm)
  • RockShox 10wt or 15wt suspension fluid
  • Syringe or oil pump for suspension fluid
  • Oil drain pan
  • Clean rags or towels
  • Suspension grease
  • Replacement seals and bushings (if necessary)
  • Pliers or shock pump (if necessary)

Step 1: Prepare the Fork

Before beginning the rebuild process, ensure the bike is in a stable position and the fork is fully unloaded.

  1. Remove the fork from the bike: Use a 15mm wrench to loosen the axle and remove the wheel. Then, unscrew the fork from the headset and remove it from the bike.
  2. Drain the old oil: Place the fork upside down into an oil pan or container to allow the suspension fluid to drain completely.

Step 2: Disassemble the Fork

  1. Remove the damper: Use a T30 or T40 Torx wrench [paid link] to loosen the damper cap on the top of the fork. Carefully remove the damper from the stanchion. If needed, use pliers for extra grip.
  2. Remove the spring assembly: Next, remove the air spring from the fork by unscrewing it from the lower leg. Be cautious when handling the air spring, as it may contain some residual air pressure. Use a shock pump to fully release the air before removing the spring.

Step 3: Clean the Components

  1. Thoroughly clean the fork: Use clean rags or towels to wipe down all components, including the stanchions, damper, and lower leg. It is essential to remove all old oil, dirt, and grime before reassembling the fork. This ensures proper lubrication and performance.
  2. Inspect the seals and bushings: Check for any signs of wear, tears, or damage on the seals and bushings. If you notice any issues, replace them with new components.

Step 4: Rebuild the Damper

  1. Disassemble the damper: Carefully unscrew the damper body to expose the internal components. Use a T25 or T30 Torx wrench [paid link] to remove the screws holding the internal damper parts.
  2. Replace the seals: After removing the damper internals, inspect the seals for any wear. Replace them as needed, ensuring they are seated properly.
  3. Rebuild with fresh oil: Apply fresh suspension fluid to the damper internals. Use the correct weight oil as specified by RockShox, usually 10wt or 15wt. Reassemble the damper, making sure all components are tightly secured.

Step 5: Install the Air Spring

  1. Lubricate the air spring: Apply a thin layer of suspension grease to the air spring components, including the seals, to prevent excessive wear during operation.
  2. Insert the air spring: Carefully install the air spring back into the fork lower leg, ensuring it is seated correctly and secured tightly.

Step 6: Reassemble the Fork

  1. Install the damper back into the fork: Carefully slide the rebuilt damper back into the stanchion and secure it in place by tightening the damper cap.
  2. Add fresh suspension fluid: Pour fresh suspension fluid into the lower legs of the fork, as per the manufacturer’s specifications. This is crucial for maintaining proper damping and lubrication throughout the fork.
  3. Reinstall the fork lowers: Slide the fork lowers back onto the stanchions and secure them with the appropriate fasteners. Tighten all bolts to the specified torque values using a torque wrench [paid link].

Step 7: Set the Air Pressure

  1. Reinstall the air spring cap: Secure the air spring cap on the fork’s top, ensuring it is threaded in properly.
  2. Add air to the fork: Using a shock pump, adjust the air pressure according to your weight and riding style. Be sure to follow the manufacturer’s recommended air pressure range for optimal performance.

Step 8: Final Adjustments

  1. Test the rebound and compression: Before reinstalling the fork onto the bike, check the rebound and compression adjustments to ensure they are functioning smoothly. Adjust them to your preferred settings, based on your riding style.
  2. Reinstall the fork onto the bike: Place the fork back into the headset and secure it with the appropriate torque settings.
  3. Install the wheel and check alignment: Reinstall the front wheel and tighten the axle. Ensure the wheel is aligned properly within the fork dropouts.

Troubleshooting Common Set-up Issues

  1. Rebound issues: If you find the rebound too slow or fast, it may be necessary to adjust the rebound damper or replace the damper oil. Old or contaminated oil can significantly affect rebound performance.
  2. Stiction or rough performance: If the fork feels sticky or rough, inspect the seals and stanchions for any debris or damage. Ensure that all components are properly lubricated.
  3. Air pressure leaks: If you experience air pressure loss, check for damaged seals in the air spring or damper. Ensure the air valve is properly closed and sealed.
  4. Excessive bottom-out: If the fork bottoms out too easily, try increasing the air pressure or adjusting the compression setting to make the fork stiffer.

Customization and Optimization for Better Performance

To optimize the performance of your ZEB Select+ suspension fork:

  1. Adjust the air pressure: Tailor the air pressure to your weight, riding style, and terrain. Lighter riders may need to lower the air pressure, while heavier riders may need to increase it for better support.
  2. Fine-tune rebound and compression: Customize the rebound and compression settings for better control based on the type of terrain you ride. Softer settings may provide more comfort, while firmer settings may enhance performance on technical trails.
  3. Upgrade the seals: Consider upgrading to higher-quality seals for improved performance and longer-lasting durability. High-performance seals can reduce friction and improve overall suspension performance.

Compatibility with Other Drivetrain Components

The ZEB Select+ fork is highly compatible with most modern drivetrain systems, including SRAM and Shimano components. However, when rebuilding or upgrading your fork, it’s essential to ensure that the fork’s axle type, brake mount configuration, and headset compatibility align with your bike’s setup. Double-check these components before making adjustments or purchasing additional parts.

By following these detailed steps and recommendations, you’ll ensure that your RockShox ZEB Select+ suspension fork remains in top condition, delivering optimal performance for all your trail and aggressive riding needs.