Cybex 522005671
Cybex EOS 5-in-1 Travel System Stroller + Lightweight Aton G Infant Car Seat User Manual
Model: 522005671
Introduction
Welcome to the Cybex EOS 5-in-1 Travel System. This comprehensive system is designed to adapt to your child's growth, offering a seamless transition from infancy through toddlerhood. It combines the versatility of the EOS stroller with the safety and convenience of the Aton G Infant Car Seat, providing a complete travel solution for your family.
The EOS stroller features an innovative 2-in-1 seat unit that effortlessly converts from a lay-flat carriage mode for newborns to a reversible toddler seat. Coupled with the Aton G Infant Car Seat, this system ensures advanced safety, smooth rides with all-terrain wheels and front wheel suspension, and practical storage with an oversized shopping basket.

Figure 1: Overview of the Cybex EOS 5-in-1 Travel System components.
Setup and Assembly
Before first use, ensure all components are present and undamaged. Refer to the included quick start guide for visual assembly steps.
Stroller Frame Assembly
- Unfold the stroller frame until it locks securely into place.
- Attach the wheels by pushing them onto the axles until they click. Ensure all wheels are firmly attached.
- Adjust the handlebar to your desired height.
2-in-1 Seat Unit Conversion
The seat unit is designed to convert between carriage mode (for newborns) and toddler seat mode without additional components.
- Carriage Mode: For infants, the seat unit can be configured into a lay-flat position, providing a comfortable and secure space.
- Toddler Seat Mode: As your child grows, the seat unit can be adjusted to an upright, reversible toddler seat. This allows your child to face you or face forward.

Figure 2: The 2-in-1 seat unit converting from carriage to toddler mode.
Attaching the Aton G Infant Car Seat
To create a travel system, attach the Aton G Infant Car Seat to the stroller frame using the included adapters.
- Ensure the stroller seat unit is removed from the frame.
- Insert the car seat adapters into the designated slots on the stroller frame until they click.
- Align the Aton G Infant Car Seat with the adapters and lower it until it securely locks into place. Always check for a secure connection by gently pulling upwards on the car seat.

Figure 3: The Cybex EOS Travel System with Aton G Infant Car Seat attached.
Operating Instructions
5 Modes of Use
The Cybex EOS Travel System offers five distinct modes to adapt to your child's needs and your lifestyle:
- Carriage Mode: Lay-flat position for newborns.
- Infant Car Seat Mode: Aton G Infant Car Seat attached to the frame.
- Toddler Seat Facing Parent: Toddler seat unit facing towards the parent.
- Toddler Seat Facing Forward: Toddler seat unit facing away from the parent.
- Compact Fold: Stroller folded for storage or transport.

Figure 4: Visual representation of the 5 modes of use.
Reversible Seat Unit
The toddler seat unit can be easily reversed to allow your child to face you for interaction or face forward to explore the world. To reverse, disengage the seat unit from the frame, flip its direction, and re-attach until it clicks securely.
One-Hand Recline
The toddler seat features a one-hand recline mechanism, allowing you to easily adjust the seat angle for your child's comfort, whether they are awake or napping.
All-Terrain Wheels and Front Wheel Suspension
The puncture-proof all-terrain wheels and front wheel suspension system ensure a smooth and comfortable ride across various surfaces, from city pavements to uneven paths.
Spacious Shopping Basket
The stroller is equipped with a spacious shopping basket with a maximum capacity of 11 lbs (approximately 5 kg), providing ample storage for your essentials during outings.

Figure 5: The spacious shopping basket for convenient storage.
Maintenance and Care
Regular maintenance ensures the longevity and safe operation of your Cybex EOS Travel System.
Cleaning
- Fabric Parts: The stroller seat cover is made of 89% Polyester Fiber and 11% Polyurethane Foam Pad. Refer to the care label for specific washing instructions. Generally, spot clean with a mild detergent and cold water. Do not bleach. Air dry.
- Frame and Plastic Parts: Wipe clean with a damp cloth and mild soap. Dry thoroughly. Do not use abrasive cleaners.
- Wheels: Periodically clean wheels and axles to remove dirt and debris. Lubricate moving parts with a silicone-based lubricant if necessary.
Storage
When not in use, store the travel system in a dry, cool place away from direct sunlight and extreme temperatures. Ensure the stroller is clean and dry before storing to prevent mold or mildew.
Troubleshooting
If you encounter any issues with your Cybex EOS Travel System, please refer to the following common solutions:
- Stroller not folding/unfolding smoothly: Check for any obstructions in the folding mechanism. Ensure all locks are disengaged.
- Wheels squeaking or stiff: Clean any debris from the wheel axles and apply a small amount of silicone lubricant.
- Car seat not attaching securely: Ensure adapters are correctly installed and free of debris. Verify that the car seat is aligned properly with the adapters before pushing down firmly. Listen for a click.
- Harness difficult to buckle/unbuckle: Check for any fabric or debris obstructing the buckle mechanism. Ensure straps are not twisted.
If problems persist, please contact Cybex customer support for further assistance.
Specifications
| Feature | Detail |
|---|---|
| Brand | Cybex |
| Model Number | 522005671 |
| Color | Moon Black (Black Frame) |
| Material | Polyester (Fabric), Metal (Frame) |
| Stroller Seat Cover Fabric | 89% Polyester Fiber, 11% Polyurethane Foam Pad |
| Age Range Description | Infant |
| Included Components | Car Seat |
| Maximum Weight Recommendation | 50 Pounds |
| Item Height | 44.3 inches |
| Item Weight | 22.7 Pounds |
| Folded Size | 26.8"L x 23.6"W x 16.5"H |
| Item Dimensions L x W x H | 37.4"L x 23.6"W x 44.3"H |
| Harness Type | 5 Point |
| Stroller Type | Standard Stroller |
| Is Car Seat Compatible | Yes |
| Seating Capacity | 2 (referring to the system's ability to accommodate both car seat and stroller seat) |
| JPMA Certified | Yes |
Warranty and Support
For detailed warranty information, please refer to the warranty card included with your product or visit the official Cybex website. Warranty terms and conditions may vary by region and product.
For customer support, technical assistance, or to inquire about replacement parts, please contact Cybex directly through their official website or the contact information provided in your product packaging.
Cybex Official Website: www.cybex-online.com
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