The RockShox Deluxe Coil Ultimate [paid link] rear shock is known for its superior performance and durability. Maintaining this component with regular oil changes is essential for smooth suspension action, optimal performance, and longevity. This guide will take you through the necessary steps to perform an oil change for the Deluxe Coil Ultimate [paid link], ensuring your shock continues to provide the best riding experience.
Tools Required
- 5mm and 8mm Allen wrenches [paid link]
- Shock pump
- Torque wrench [paid link]
- T25 Torx driver
- 10mm socket wrench
- 10mm open-end wrench
- Clean work surface
- RockShox recommended oil (e.g., RockShox 15wt or equivalent)
- Replacement seals (if necessary)
- Clean rags
- Shock fluid syringe or oil fill tool
- Small containers for drained fluid
Preparing for the Oil Change
Before you begin the oil change process, ensure you are working in a clean environment. It’s best to have a flat, stable surface where you can disassemble and reassemble the shock without distractions.
1. Remove the Rear Shock from the Frame
Start by removing the rear shock from the bike. Depending on your bike’s frame, you will need to use a 5mm Allen wrench [paid link] to undo the bolts that secure the shock to the frame. Make sure to keep track of the bolts and washers for reassembly.
2. Clean the Shock
Before performing any work on the shock, it’s important to clean it. Use a clean rag to wipe down the shock body and the area around the shock’s air valve. This will help prevent any dirt or debris from entering the shock during the oil change process.
Disassembly of the Shock
3. Remove the Air Canister
The RockShox Deluxe Coil Ultimate features an air canister that houses the air spring. To remove it, you will need to first remove the top cap of the shock using an 8mm Allen wrench [paid link]. Once the top cap is removed, the air canister will slide off. Be sure to take note of the position and orientation of the parts for reassembly.
4. Drain the Old Oil
Now that the shock is disassembled, you can drain the old oil. Place the shock in a small container to catch the used fluid. Remove the oil fill port and allow the oil to completely drain. Be patient, as this process may take a few minutes.
Cleaning and Inspection
5. Clean the Internal Components
Once the oil has been drained, thoroughly clean the internal components of the shock. Use a clean rag or a brush to remove any dirt or debris from the piston, shaft, and other parts. This ensures that no contaminants enter the new oil when it is added.
6. Inspect the Shock’s Components
Examine the shock’s components for any signs of damage or wear. This includes checking the seals, the air canister, and the damper components. If the seals appear worn or damaged, replace them before proceeding. Proper maintenance of these parts is crucial for the shock’s performance.
Reassembly and Oil Filling
7. Apply New Oil to the Shock
Now that the shock components are clean and inspected, it’s time to apply fresh oil. Use the recommended RockShox oil or an equivalent. Using a shock fluid syringe or oil fill tool, slowly fill the shock with the correct amount of oil. Ensure that you are filling the shock to the level indicated in the user manual for your specific model.
8. Reassemble the Shock
Once the new oil is in place, carefully reassemble the shock. Slide the air canister back onto the shock body and secure the top cap with an 8mm Allen wrench. Make sure all parts are properly aligned, and the shock is sealed tightly to prevent air or oil leaks.
9. Reinstall the Shock on the Bike
With the shock fully reassembled, reinstall it onto your bike frame. Secure the shock using the 5mm Allen wrench, tightening the bolts to the manufacturer’s recommended torque specification.
Final Setup and Testing
10. Set the Air Pressure
Before you ride, it’s essential to set the correct air pressure in the shock. Use a shock pump to inflate the shock to the recommended pressure based on your rider weight and the specific settings for the Deluxe Coil Ultimate model. Check the pressure using the shock pump’s built-in gauge.
11. Perform a Test Ride
Once the shock is installed and the air pressure is set, take your bike for a test ride. Pay attention to any unusual sounds or feels from the rear suspension. If you notice anything out of the ordinary, such as a loss of rebound damping or air pressure, inspect the shock again for leaks or improper setup.
Troubleshooting Common Issues
Low Rebound Damping
If the rebound damping feels too slow or too fast after the oil change, it might indicate that the oil volume or viscosity is incorrect. Check that you’ve used the correct type and amount of oil. Additionally, verify that the rebound adjuster is set correctly.
Air Leaks
If you experience a loss of air pressure in the shock after an oil change, inspect the seals around the air canister and shock body. If the seals are worn, replace them. Air leaks can compromise the performance of the shock and should be addressed immediately.
Unusual Sounds
Unusual sounds, such as knocking or grinding noises, can be caused by improper lubrication, dirt in the shock, or internal damage. If you hear these sounds, disassemble the shock again, clean it thoroughly, and check for any damaged components that may need replacement.
Customization and Optimization
The Deluxe Coil Ultimate shock offers several options for customization to suit different riding styles. Adjusting the rebound and compression settings allows you to fine-tune the shock’s performance for your specific needs. Additionally, experimenting with different spring rates and air pressures can further optimize the ride quality, improving comfort and handling.
Compatibility with Other Drivetrain Components
The RockShox Deluxe Coil Ultimate is designed to work with a wide variety of bike frames and drivetrains. However, compatibility can depend on the specific dimensions and mounting hardware of your bike. Be sure to check the shock’s eye-to-eye length and stroke to ensure it matches your bike’s frame requirements. Using compatible mounting hardware is essential for proper installation and performance.