The RockShox SID Select+ is a high-performance cross-country suspension fork designed for riders seeking lightweight responsiveness and control. Regular servicing of the SID Select+ is essential to maintain optimal performance, extend the life of internal components, and ensure consistent ride quality. This guide covers the installation, adjustment, maintenance, troubleshooting, customization, compatibility, and comparison of the SID Select+.
Tools Required
- 3, 4, 5 mm Allen wrenches [paid link]
- Torque wrench [paid link]
- RockShox 0W-30 suspension oil
- Suspension pump (for air spring)
- Pick tool or seal puller
- Plastic syringe or oil measuring cup
- Clean lint-free cloths
- Suspension grease (e.g., SRAM Butter)
- Lower leg removal tool (if applicable)
- Safety glasses and gloves
Installing the RockShox SID Select+
Installing the SID Select+ fork requires precision to ensure alignment, torque, and setup are correct for your frame and riding style. Begin by inserting the steerer tube into your bike’s head tube. If the steerer is uncut, trim it to match your frame and cockpit setup. Install a star nut or threaded insert, depending on your headset.
Tighten the top cap and stem bolts in sequence to remove headset play. Align the fork and torque stem bolts to the manufacturer’s specs. Lastly, confirm the brake caliper mounts align with the post-mount tabs on the fork. Install the front wheel and test for smooth compression and rebound.
Air Spring Adjustment and Sag Setup
Set the correct air pressure using a suspension pump. RockShox provides a rider weight-to-pressure chart, but a personalized setup is often more accurate. Measure sag by wearing your full riding gear and sitting on the bike in a neutral position. Use the O-ring to determine how much travel is used and adjust air pressure accordingly to achieve 15-25% sag for cross-country use.
Fine-tune the rebound by turning the red dial at the fork’s base. Adjust clockwise for slower rebound and counter-clockwise for faster return. Riders should tune this based on terrain: faster rebound for smooth trails, slower for technical descents.
Routine Maintenance and Lower Leg Service
Routine maintenance extends the performance and lifespan of your fork. For the SID Select+, a lower leg service is recommended every 50 hours of riding. Start by removing the fork from the bike and cleaning it thoroughly.
Release air from the air spring. Using Allen wrenches [paid link], remove the bolts at the bottom of each fork leg. Gently tap them to dislodge the lower legs. Drain the old oil into a container and inspect it for contamination. Clean the stanchions and lower legs with a lint-free cloth.
Replace foam rings and wiper seals if necessary. Apply fresh suspension grease to the foam rings. Pour in the recommended volume and type of suspension oil into each leg (typically 10–15 ml). Reinstall the lower legs, tighten the bolts to spec, and re-pressurize the air spring.
Troubleshooting Common Issues
Sticky Travel or Harsh Compression
This can indicate dry or contaminated wiper seals. Conduct a lower leg service, ensure foam rings are saturated with oil, and inspect stanchions for wear.
Loss of Air Pressure
Check for valve core leaks. If the air spring loses pressure frequently, inspect internal seals within the air spring assembly. A full air spring service may be needed.
Excessive Rebound or Compression Noise
Internal damping fluid may be low or contaminated. A full damper service is recommended in this case, best done by an experienced technician or authorized service center.
Fork Not Fully Extending
This could be due to a negative air spring imbalance. Performing a full air spring equalization procedure or a full service can resolve this.
Performance Optimization and Tuning
Customize your SID Select+ by fine-tuning air pressure, rebound, and volume spacers. Volume tokens can be added to adjust the spring curve, making the fork more progressive. This is ideal for riders who frequently encounter harsh impacts and want to avoid bottom-outs.
The rebound and compression damping adjustments, though more limited on the Select+ compared to the Ultimate version, offer sufficient control for most XC conditions. Consider pairing the fork with a matching RockShox rear shock for balanced ride characteristics.
Compatibility with Other Components
The SID Select+ is compatible with 29-inch wheels and boost-spacing (110mm) hubs. Ensure your wheelset matches this specification. It supports 180mm post-mount brake calipers, with adapters available for larger rotors.
This fork pairs well with SRAM and RockShox components, particularly for integrated remote lockout systems. Riders using Shimano drivetrains or other third-party cockpit components can still use the SID Select+, but compatibility with remote lockout options may require additional adapters.
Comparison with Other RockShox SID Models
The SID Select+ sits below the Ultimate in the SID lineup. It shares the same lightweight chassis but features the Rush RC damper instead of the more advanced Charger Race Day damper in the Ultimate. This results in fewer tuning options but retains excellent small bump compliance and control.
Compared to the SID Select (without the “+”), the Select+ includes a DebonAir spring, improving responsiveness and ride quality. While not as adjustable as the SID Ultimate, the Select+ offers better value and sufficient adjustability for most XC riders.
Frequently Asked Questions (FAQs)
How often should I service my RockShox SID Select+ fork?
Service intervals depend on riding conditions. For typical use, perform a lower leg service every 50 hours and a full damper and air spring service every 100–200 hours.
Can I add volume spacers to the SID Select+ fork?
Yes, the SID Select+ supports volume tokens. These allow you to fine-tune the spring curve for a more progressive feel.
Is the SID Select+ compatible with remote lockout levers?
Yes, but compatibility depends on the exact configuration. The SID Select+ supports remote lockouts with compatible RockShox levers like the OneLoc.
What type of oil should I use in the SID Select+ fork?
Use RockShox 0W-30 suspension oil for lower leg service. Always follow the service manual for correct volumes and viscosity.
How do I fix a fork that won’t extend fully?
A fork that fails to extend is often due to a negative air spring imbalance. Fully release and equalize air pressure, or perform a full air spring service.
Can I upgrade the damper in the SID Select+ to a Charger Race Day?
Technically, it is possible, but it may void warranties and is not officially supported by SRAM. Consult a professional mechanic for compatibility and installation.
Conclusion
Servicing your RockShox SID Select+ suspension fork at home is a valuable skill that helps maintain its high-performance characteristics. By following a consistent maintenance schedule, tuning your settings for your riding style, and addressing issues early, you ensure your fork continues to perform optimally on every ride.