The RockShox SID Select+ is a high-performance cross-country suspension fork designed to deliver lightweight efficiency, precise control, and dependable compliance on technical terrain. Maintaining and tuning this fork properly ensures lasting performance and smooth operation over time. This guide provides detailed instructions on installation, adjustment, maintenance, and optimization of the SID Select+, tailored for riders aiming to maintain their fork at home without compromising factory-level performance.
Tools Required:
- 3mm, 5mm, 6mm Allen wrenches [paid link]
- Torque wrench [paid link] with appropriate bits
- Suspension pump (for air spring adjustment)
- RockShox suspension oil (per service manual spec)
- Clean microfiber cloths
- Isopropyl alcohol (90% or higher)
- Pick tool or seal puller
- Bath oil syringe (for lower leg service)
- Plastic mallet (for safely dislodging lowers)
Installation of the SID Select+
Proper installation is crucial to maximizing the performance and longevity of your SID Select+.
Steerer Tube Preparation and Cutting
Before installing, ensure the steerer tube length matches your frame and cockpit stack height. Measure precisely, accounting for headset bearings and spacers. Cut the steerer cleanly with a guide and file any burrs.
Crown Race and Star Nut Installation
Press the correct crown race onto the fork using a crown race setter. If your headset uses a compression plug instead of a star nut (common for carbon steerers), install it as per the manufacturer’s specifications.
Fork Fitment and Torque Settings
Insert the fork into the head tube and assemble the headset. Align the stem and top cap, then torque the stem bolts to the manufacturer’s recommended specs (typically 5–6 Nm). Avoid overtightening to prevent damage.
Brake and Rotor Compatibility
The SID Select+ typically supports 160mm or 180mm rotors with the proper post mount adapters. Ensure rotor bolts are torqued evenly and the caliper is aligned without rotor rub.
Adjusting the SID Select+ Suspension Settings
Dialing in your suspension correctly enhances comfort and control over varied terrain.
Air Spring Pressure
Use the RockShox air pressure chart as a baseline. Connect the shock pump to the Schrader valve and inflate or bleed air to reach the recommended pressure based on rider weight. Fine-tune by riding and adjusting in small increments.
Sag Setting
With the rider in full gear, position the bike against a wall and assume riding position. Measure sag by observing the o-ring movement on the stanchion. Aim for approximately 15–25% sag for cross-country applications.
Rebound Damping
Turn the red rebound knob at the fork’s lower leg. For beginners, start in the middle of the range and adjust based on trail feedback. Slower rebound suits technical terrain, while faster rebound works better for flowy singletrack.
Compression Adjust (Charger RL Damper)
The Charger RL damper includes a lockout lever and a threshold adjuster. Use the blue lever to toggle between open and lockout. The threshold setting controls how firm the lockout feels—ideal for climbs where minimal suspension movement is desired.
Routine Maintenance and Service Intervals
Maintaining your SID Select+ ensures consistent performance and prevents premature wear.
Lower Leg Service (Every 50 Hours)
Remove the lowers using a plastic mallet and drain the old bath oil. Clean the internals with isopropyl alcohol. Inspect dust seals and foam rings for contamination. Refill with new oil (per RockShox spec) before reinstalling.
Air Spring and Damper Service (Every 100–200 Hours)
Full air spring and damper servicing requires disassembly and specialized tools. This should be done by experienced home mechanics or a suspension service center. Replace all o-rings and seals during this service.
Stanchion and Seal Cleaning (Every Ride)
After every ride, wipe down stanchions and dust wipers with a clean microfiber cloth. Inspect for dirt ingress or oil weeping. Keeping seals clean reduces friction and prolongs service intervals.
Troubleshooting Common Setup Issues
Common issues with the SID Select+ often stem from installation errors or lack of maintenance.
Harsh Ride or Bottoming Out
If the fork feels overly stiff or blows through travel too easily, verify the air pressure and sag settings. Recheck rebound and compression tuning, especially the lockout threshold.
Oil Leaks
Persistent oil around the stanchions typically indicates worn seals or overfilled bath oil. Perform a lower leg service and inspect for damage. Use genuine RockShox seals to ensure compatibility.
Creaking Crown or Steerer
Unusual creaking can originate from headset interfaces or the fork crown itself. Check all torques and apply carbon paste if using a carbon steerer. If the creak persists, it may require professional evaluation.
Customization and Performance Optimization
Enhancing your SID Select+ beyond factory settings can yield noticeable gains in ride quality.
Volume Spacers for Air Spring Tuning
Installing Bottomless Tokens can change the spring curve of the fork, making it more progressive. This is especially useful for aggressive riders who need additional bottom-out resistance without affecting sag.
Upgrade to Remote Lockout
The SID Select+ is compatible with TwistLoc or OneLoc remote lockout systems. This upgrade allows on-the-fly adjustments without taking your hands off the bars—ideal for race situations.
Aftermarket Damper Upgrades
Although the Charger RL is a robust performer, RockShox offers higher-end dampers like the Charger Race Day for riders seeking ultimate performance. Check compatibility and budget before considering this upgrade.
Comparing the SID Select+ With Similar Models
The SID Select+ sits between the SID Select and SID Ultimate in RockShox’s cross-country lineup.
SID Select vs. SID Select+
The key difference lies in the damper—Select+ features the Charger RL, offering a more refined compression control than the Rush damper in the standard Select.
SID Select+ vs. SID Ultimate
While both use the same damper, the SID Ultimate uses lighter materials like a carbon crown and features anodized finishing. Riders looking to shave grams may prefer the Ultimate, but performance is nearly identical.
Compatibility With Other Drivetrain Components
Understanding fork compatibility ensures smooth integration into your current bike setup.
Axle and Hub Standards
The SID Select+ uses a 15x110mm Boost thru-axle. Ensure your hub spacing and disc brake mount align with this standard.
Steerer Tube and Headset
The fork features a tapered steerer (1 1/8″ to 1.5″), compatible with most modern headsets. Verify that your frame’s head tube can accommodate this standard.
Rotor Size and Brake Calipers
Designed for post-mount brakes, the fork supports up to 180mm rotors without adapters. Caliper alignment may need adjustment after fork installation.
Frequently Asked Questions
How often should I service the SID Select+?
Basic lower leg service is recommended every 50 hours, while full damper and air spring service is typically needed every 100 to 200 hours.
Can I upgrade the damper in my SID Select+?
Yes, the Charger RL can be replaced with a Charger Race Day damper for improved performance, though this involves a significant cost.
Is the SID Select+ compatible with remote lockouts?
Absolutely. The fork is compatible with TwistLoc and OneLoc remote lockout systems for handlebar-mounted control.
What pressure should I run in the air spring?
Start with the RockShox chart based on your weight, then fine-tune based on sag and trail feel. Always use a shock pump for accurate adjustment.
Does the SID Select+ work with 29-inch wheels?
Yes, this fork is optimized for 29-inch wheels and up to 2.4-inch tires, depending on the model year.
Can I run this fork on a trail bike?
The SID Select+ is designed for cross-country use. While it may physically fit trail bikes, its tuning and construction are not ideal for aggressive riding.