RockShox Sid RCT3 A3 Compression Damper
RockShox

RockShox Sid RCT3 A3 Compression Damper

$165.00
In Stock

OEM RockShox SID RCT3 A3 compression damper kit with crown compression knobs for 2014–2016 SID forks. Precision replacement for Motion Control DNA setups — ideal for rebuilds and long-term service.

Add to Cart
🚚 Fast Shipping 🔒 Secure Checkout ↩ Easy Returns

Product Details

Overview & Technology

RockShox SID RCT3 A3 Compression Damper is the factory replacement compression cartridge used in SID RCT3 A3 forks (model years 2014–2016). It houses the Motion Control DNA compression stack and the crown-mounted compression adjuster so your fork's low-speed and pedal-stability characteristics return to factory spec after a service or repair. The damper assembly features a precision-machined aluminum body, a hardened piston/shaft, and high-quality sealing hardware to control oil flow through calibrated shim stacks. This oil-based damper provides consistent damping, crisp crown adjust response and improved small-bump sensitivity compared with worn or tired internals.

Key Features & Benefits

What makes this damper worth fitting: • Motion Control DNA damping—balanced low/high-speed control for efficient climbing and composed descents. • Crown compression adjust with tactile knobs included — tune pedal platforms and firmness on the fly. • OEM construction with CNC-machined housing and hardened internals for long service life and exact fitment. Replacing the damper restores factory damping characteristics, eliminates stiction and improves small-bump compliance — translating to better traction, more efficient pedaling and consistent handling on mixed XC trails.

Fit, Installation & Compatibility

Compatibility: This part is the OEM compression damper for RockShox SID RCT3 A3 forks from 2014 to 2016 and matches RockShox part number 11.4015.544.270 and Forest SKU 942379. The available variant is the SID RCT3 Black (includes compression knobs). Installation notes: Designed as a direct swap into the SID RCT3 A3 damper cartridge. Installation requires basic fork service tools and familiarity with damper removal, oil draining and correct torque settings. New seals and the correct damper oil are recommended during service — if you’re unsure, have a qualified suspension tech perform the install to avoid contamination or seal damage.

Who It's For

This damper is aimed at cross-country and light trail riders who own a SID RCT3 A3 fork (2014–2016) and want to restore factory damping performance without replacing the whole fork. It's ideal if your fork shows reduced small-bump sensitivity, harsh compression, or the crown adjust no longer influences feel. Mechanically competent home mechanics will appreciate the plug-and-play nature of this OEM replacement, while workshop techs will value the exact-fit internals and genuine RockShox specification for rebuilds and race-prep maintenance.

Key Features

  • ✓ OEM RockShox compression damper for SID RCT3 A3 forks (2014–2016)
  • ✓ Includes crown-mounted compression knobs for on-the-fly tuning
  • ✓ Precision CNC-machined aluminum body with hardened piston shaft
  • ✓ Motion Control DNA damping restores balanced low/high-speed control
  • ✓ Direct-fit replacement — restores factory feel and pedal platform
  • ✓ Ideal for rebuilds and service to eliminate stiction and harshness
  • ✓ RockShox MPN 11.4015.544.270, Forest SKU 942379

Product Identifiers

Vendor Item # 11.4015.544.270
UPC 710845738593

Frequently Asked Questions

Will this damper fit my SID fork?

This compression damper is specifically for RockShox SID RCT3 A3 forks from model years 2014–2016. Check your fork crown and damper body to confirm you have the A3 variant. If in doubt, compare part numbers or contact us with your fork serial/model for verification.

Can I install this myself at home?

If you have basic suspension service experience and the appropriate tools (torque wrench, suspension oil, damper removal tools), you can install this damper. However, correct oil volumes, bleed procedures and seal replacement are important — consider a professional service if you’re not confident.

What tools and consumables are required for the install?

Typical install requires an 8–10 mm hex for crown hardware, torque wrench, suspension-specific oil, clean rags, and new damper seals/foam rings if you're performing a full service. A RockShox service manual for SID RCT3 provides step-by-step torque and oil-volume specs.

How often should I service my damper?

Service intervals depend on riding conditions, but RockShox recommends lower-leg service at least every 50 hours and a full damper service roughly every 100–200 hours of riding. If you notice performance loss, increased friction, or oil leaks, service sooner.

Does this part include the compression knobs?

Yes — the available variant (SID RCT3 Black A3) includes the crown-mounted compression knobs so you regain on-the-fly adjustability as delivered from the factory.

What is the manufacturer part number and shipping weight?

Manufacturer Part #: 11.4015.544.270 (Forest SKU 942379). Shipping dimensions are 6.5" x 5" x 1.5" and the package weight is approximately 0.1 lb.

Buying Guide

When replacing a compression damper, always match the exact RockShox part number and fork model year — internal dimensions, shim stacks and adjuster interfaces change between variants. Buying the OEM RCT3 A3 cartridge guarantees the crown-knob interface and damping characteristics will be correct for 2014–2016 SID forks. Decide whether you need a simple cartridge swap or a full fork service: a cartridge swap restores compression behavior quickly, but a full service (new seals, oil change, lower-leg refresh) will return the fork to the best possible performance. If you ride aggressively or in wet/muddy conditions, plan for more frequent service intervals.

Ready to order?

Shop with confidence at Scenders — premium cycling parts, fast shipping.

View Full Product