The RockShox SID Select+ represents a significant evolution in XC and light trail suspension, combining precision performance with user-friendly features. Specifically engineered for riders seeking race-worthy efficiency without compromising trail capability, the SID Select+ strikes a balance between lightweight construction and trail-readiness. This article provides a comprehensive guide on installation, adjustment, maintenance, and optimization of the SID Select+, including insights into its compatibility and performance compared to similar models.
Tools Required
- Torque wrench [paid link] with 5 mm and 6 mm hex bits
- Shock pump with digital or analog gauge
- Star nut setting tool (for first-time steerer tube installation)
- Crown race setting tool
- Suspension grease and isopropyl alcohol
- Torque spec chart (as per RockShox manual)
- Clean microfiber cloths
Installation Guide for the SID Select+
Proper installation is critical for optimal performance and rider safety. Begin by ensuring compatibility with your bike’s head tube diameter and axle type (SID Select+ uses a 15×110 mm Boost axle and tapered steerer).
Preparation involves trimming the steerer tube to the appropriate length, pressing in a star nut, and fitting the crown race. Slide the fork into the head tube, install spacers, stem, and top cap, and preload the headset. Secure the stem bolts to the correct torque value. The front wheel is then mounted using the Maxle Stealth thru-axle, tightened to the recommended specification to prevent slippage during aggressive descents.
Suspension Setup and Adjustment
Setting the correct air pressure in the DebonAir spring is foundational. Use a shock pump to match the rider’s weight with RockShox’s recommended air pressure chart. Fine-tune from this baseline based on sag measurements—targeting 15-25% of travel for XC or up to 30% for light trail use.
The SID Select+ utilizes the Charger RL damper. Rebound adjustment is done via the red dial on the fork’s lower leg; slower rebound improves control on rough descents, while faster rebound helps maintain traction over small, repetitive bumps. The compression lockout lever atop the damper lets riders quickly toggle between open and firm modes for climbing and descending.
Routine Maintenance Procedures
Regular maintenance extends the SID Select+ fork’s lifespan and keeps it performing consistently. Every 50 hours of riding, inspect and clean the lower leg seals and foam rings. Remove the lowers using a 5 mm hex wrench and drain the lubricant. Clean internals with isopropyl alcohol and re-lubricate with RockShox-specified suspension grease and 15W oil.
At 100-hour intervals, conduct a full damper and air spring service. This requires disassembling the Charger RL damper and DebonAir spring to replace seals, inspect for wear, and refresh the damping oil. Always adhere to factory torque specs during reassembly to prevent damage and ensure proper function.
Troubleshooting Common Setup Issues
Improper fork setup often leads to poor ride quality. Excessive dive during braking usually points to low air pressure or insufficient compression damping. Bottoming out can be mitigated by increasing air pressure or adding volume spacers inside the air spring shaft.
If the fork feels harsh or unresponsive, check for contamination in the lower leg oil or dry foam rings. Inconsistent rebound indicates possible air migration between the positive and negative air chambers—a full air spring service can restore performance.
Riders experiencing noise during compression should inspect bushings for wear or stanchion scoring, which may require professional replacement.
Performance Customization and Optimization
The SID Select+ can be tailored to individual riding preferences. Volume spacers are a simple way to adjust spring progression. Adding spacers increases ramp-up, ideal for aggressive riders needing bottom-out resistance. Conversely, removing them softens mid-stroke support.
Rebound damping can be fine-tuned in the field to match terrain. Rocky, technical trails often benefit from slower rebound, while flow trails allow for a faster setting. The Charger RL damper’s remote lockout compatibility also adds flexibility for racers looking to minimize cockpit interaction during rides.
Swapping the Maxle Stealth for the Maxle Ultimate adds tool-free convenience and slight weight savings, contributing to an improved race-day setup.
Compatibility with Other Drivetrain and Frame Components
The SID Select+ fork fits frames with a 44/56 mm tapered head tube and supports 29-inch wheels with up to 120 mm travel configurations. It is compatible with both SRAM and Shimano brake mounts using post-mount adapters, supporting rotor sizes up to 180 mm without the need for unconventional spacers.
It pairs seamlessly with RockShox rear shocks tuned to similar damping curves, allowing balanced suspension performance. For dropper posts, the fork’s crown accommodates remote lever cable routing without interference, an essential detail for modern trail bikes.
Comparison to Similar RockShox Models
The SID Select+ sits between the SID Ultimate and SID Base in RockShox’s hierarchy. While it lacks the Ultimate’s machined crown and ultra-light damping system, the Select+ offers the same Charger RL damper performance at a lower cost, with only a minor weight penalty.
Compared to the SID Base, the Select+ gains a more sophisticated damper and improved chassis stiffness. For riders prioritizing trail-capable performance on a budget, the Select+ provides the best value-to-performance ratio in the SID lineup.
Frequently Asked Questions
Is the SID Select+ good for aggressive trail riding?
While designed primarily for XC and light trail use, the SID Select+ offers enough stiffness and support for moderate trail riding when properly tuned.
Can I install a remote lockout on the SID Select+?
Yes, the fork is compatible with RockShox OneLoc and TwistLoc remote lockout systems for on-the-fly damping control.
How often should I service the SID Select+?
Routine lower leg maintenance should be performed every 50 hours, with full service at 100-hour intervals or annually.
What tire width can the SID Select+ accommodate?
It supports tires up to 2.4 inches wide with 29-inch wheels, making it versatile for various terrain and trail conditions.
Is the SID Select+ compatible with 27.5″ wheels?
No, the SID Select+ is optimized for 29″ wheels and should not be used with smaller wheel sizes due to axle-to-crown geometry.
What’s the main difference between SID Select and SID Ultimate?
The SID Ultimate uses higher-end materials and a lighter damper (Charger Race Day), whereas the Select+ focuses on performance and value without premium weight savings.
Conclusion
The RockShox SID Select+ is a standout choice for riders demanding efficiency, adjustability, and lightweight design for XC and trail applications. Its advanced damper, air spring design, and user-focused features make it a fork that enhances ride quality while remaining serviceable and customizable. Whether racing or exploring technical terrain, the SID Select+ elevates performance through thoughtful engineering and reliable execution.