The RockShox Super Deluxe Coil Ultimate is a high-performance rear shock designed for serious riders who demand the best in suspension technology. Regular maintenance, including oil changes, is essential for ensuring optimal performance, longevity, and comfort. In this guide, we will take you through a detailed, step-by-step process for changing the oil on your Super Deluxe Coil Ultimate. By the end, you’ll be equipped with the knowledge to perform this maintenance yourself, keeping your rear shock functioning at its best.
Tools Required
- 5mm and 8mm Allen wrenches [paid link]
- 2mm Allen wrench [paid link]
- T25 Torx wrench [paid link]
- 10mm spanner wrench
- Small syringe or oil pump
- Rags or shop towels
- 10cc of RockShox recommended oil (usually 15wt for the Super Deluxe Coil Ultimate)
- Suspension grease
- Shock pump (for re-pressurization)
Preparation
Before beginning the oil change, ensure that you have a clean and well-lit workspace. Gather all necessary tools and components. It’s essential to work on the shock in a clean environment to prevent dirt and debris from contaminating the internal components of the shock.
1. Remove the Shock from the Bike
Start by detaching the shock from the frame. Use the appropriate Allen wrenches [paid link] to remove the mounting bolts securing the shock to the bike. Be sure to keep the bolts in a safe place for reinstallation. Once the shock is removed, place it on a clean, stable surface.
2. Remove the Coil Spring
To access the internal components of the shock, you need to remove the coil spring. Use the 10mm spanner wrench to undo the preload collar and then slide the spring off the shock body. Keep the spring clean and inspect it for any signs of wear or damage.
Disassembling the Shock
3. Remove the Air Canister (If Applicable)
Some models of the Super Deluxe Coil Ultimate may feature an air chamber alongside the coil. To access the oil bath inside, you will need to remove this air canister. Using the 8mm Allen wrench [paid link], carefully undo the bolts that secure the air canister to the shock body. Ensure you do not damage any O-rings or seals during this process.
4. Remove the Damper Shaft Assembly
Once the air canister is removed, you should see the damper shaft assembly. Use the 5mm Allen wrench to remove any bolts securing the damper assembly in place. Take care to remember the orientation of the parts for proper reassembly. After the bolts are removed, gently pull the damper assembly out of the shock body.
5. Drain the Old Oil
With the damper assembly removed, you can now drain the old oil. Carefully place the shock in a vertical position, with the oil port facing downwards. Allow the shock to fully drain, ensuring that any residual oil is removed. Use a clean rag or shop towel to wipe away any remaining oil.
Cleaning and Inspection
6. Clean the Shock Components
Before adding new oil, thoroughly clean the shock body, damper assembly, and all internal components. Use a soft rag and suspension-safe cleaning solution. Pay close attention to the damper shaft, seals, and O-rings. Inspect all components for wear or damage, replacing any worn seals or parts as needed.
7. Inspect the Air Canister and Damper Shaft
It’s also a good time to inspect the air canister and damper shaft for any signs of damage or corrosion. If you notice any imperfections, replace the damaged parts before proceeding. Ensure that all internal O-rings are in good condition and are lubricated with suspension grease.
Reassembly and Oil Fill
8. Reinstall the Damper Shaft Assembly
Once the shock and components are cleaned and inspected, begin reassembling the shock. Insert the damper shaft assembly back into the shock body, ensuring it is properly aligned. Tighten the bolts to the recommended torque specification, being careful not to overtighten.
9. Fill with New Oil
Now it’s time to add the new suspension oil. Using a syringe or oil pump, slowly inject the recommended amount of oil (usually around 10cc) into the shock body. Be sure to use RockShox recommended oil, as using the wrong type can affect performance. Once the oil is in, slowly cycle the damper shaft up and down to allow the oil to settle and fill the internal components fully.
10. Reinstall the Air Canister (If Applicable)
If your Super Deluxe Coil Ultimate has an air canister, now is the time to reinstall it. Carefully align the air canister with the shock body and tighten it using the 8mm Allen wrench. Ensure that all O-rings are properly seated and that no oil is leaking.
11. Replace the Coil Spring
After the oil is in place and the air canister is secured, you can now reinstall the coil spring. Slide the spring onto the shock body and tighten the preload collar using the 10mm spanner wrench. Make sure the spring is seated properly and that the preload collar is tightened to the desired level.
Final Adjustments and Testing
12. Reinstall the Shock on the Bike
Once the shock is fully reassembled, reinstall it on the bike. Use the appropriate Allen wrenches to secure the mounting bolts and ensure the shock is positioned correctly.
13. Set the Sag and Re-pressurize (If Applicable)
After the shock is mounted, use a shock pump to adjust the air pressure to your desired level (if your model uses an air canister). Set the sag according to your rider weight and preferences. Test the shock by pushing down on the saddle to check for proper travel and damping.
14. Test Ride and Fine-tune
Once everything is reassembled, take your bike for a test ride. Pay close attention to how the rear shock performs. If necessary, fine-tune the compression and rebound settings to your preference. Make sure to check the shock for any signs of leaks or abnormal behavior. If the shock feels too soft or too firm, adjust the pressure and settings accordingly.
Troubleshooting Common Issues
- Excessive Sag: If the shock feels too soft and you’re experiencing too much sag, increase the air pressure or adjust the coil preload.
- Lack of Rebound Control: If the shock feels sluggish or doesn’t return to its original position, inspect the rebound adjustment dial. Ensure that it is set properly and that the oil is correctly filled.
- Leaking Oil: Leaks could indicate a problem with the seals. Replace any damaged seals and recheck the shock for leaks.
- Squeaky or Noisy Shock: This could be due to dry seals or dirt build-up. Clean the shock and lubricate the seals with suspension grease.
By following these steps, you can perform an oil change on your RockShox Super Deluxe Coil Ultimate rear shock. Regular maintenance ensures that your suspension performs optimally, providing the smooth and controlled ride you need for demanding terrain.