Thule Arcos Box large hard-shell towbar cargo carrier box

The Thule Arcos L Rear Cargo Box is a premium hard-shell rear-mounted storage solution designed to add substantial extra carrying capacity while maintaining excellent aerodynamics and vehicle efficiency. Mounted to the rear of the vehicle using the dedicated Thule Arcos Platform, the Arcos L provides an impressive 400 litres of secure and easily accessible storage space without occupying valuable roof space.

Perfect for family holidays, road trips, outdoor adventures, and everyday practicality, the Thule Arcos combines modern Scandinavian design with practical functionality. Its aerodynamic wing-shaped profile helps minimise drag and reduce the impact on fuel consumption or electric vehicle range, while the low-mounted position makes loading and unloading significantly easier than traditional roof boxes.

Please Note: The Thule Arcos Box must be used together with the compatible Thule Arcos Platform, sold separately.

• Large 400L rear-mounted cargo storage box
• Designed for use with the Thule Arcos Platform
• Aerodynamic wing-shaped design reduces drag
• Minimal impact on fuel consumption and EV battery range
• Low-mounted position for easier loading and unloading
• Modern hard-shell construction protects contents from dirt and water
• SlideLock system with separate locking and opening functions
• Automatic secure lid locking indication
• One-person mounting capability
• Allows roof space to remain free for bikes, roof tents, kayaks, or roof bars
• Low-profile wedge shape allows access to vehicle boot
• Modular design allows box sections to separate for storage
• Compatible with Thule One Key System

The Thule Arcos L is designed to provide substantial additional storage space at the rear of the vehicle, making it ideal for holidays, touring, sports equipment, camping gear, luggage, or bulky everyday items. By mounting at the rear instead of the roof, the system keeps roof bars free for additional equipment or avoids roof loading altogether on vehicles where roof carrying may be impractical.

This also helps maintain overall vehicle height, which can be particularly beneficial when using ferries, multi-storey car parks, garages, or height-restricted areas.

The Arcos L has been carefully engineered with a modern aerodynamic wing profile that integrates naturally with the rear of the vehicle. The streamlined shape helps minimise wind resistance, reducing the impact on fuel consumption compared to many traditional roof-mounted cargo boxes.

This makes the Arcos particularly well suited to electric vehicles where preserving battery range is especially important during longer journeys.

Unlike roof boxes that require lifting heavy items overhead, the low-mounted design of the Thule Arcos makes loading and unloading far more convenient and ergonomic. The cargo box sits close to ground level, improving access for luggage, camping equipment, sports gear, pushchairs, or heavier items.

The wedge-shaped low-profile design also helps maintain practical access to the vehicle boot area while the box is installed.

The durable hard-shell exterior helps protect stored belongings from road dirt, rain, and outdoor conditions during travel. Built with Thule’s premium quality standards, the Arcos is designed for long-term reliability and everyday usability across a wide range of driving conditions.

The modular construction also allows the cargo box to separate into individual sections for more compact storage when not in use.

The integrated SlideLock system features separate locking and opening functions for improved security and ease of use. The mechanism automatically locks the lid securely in place and visually indicates when the box has been properly closed, helping provide confidence before travelling.

The Arcos L is also compatible with the Thule One Key System, allowing multiple compatible Thule products to be operated using a single key setup.

• Thule Arcos L Rear Cargo Box
• Integrated SlideLock system
• Mounting hardware
• User documentation

Thule is a globally recognised Swedish brand with over 80 years of experience designing premium transport and outdoor lifestyle solutions. Known for combining Scandinavian design with industry-leading safety, durability, and practicality, Thule products are rigorously tested to perform reliably in demanding real-world conditions. Whether travelling, touring, cycling, or camping, Thule equipment is engineered to make transporting your gear simpler, safer, and more efficient.