Thule Force 3 L Sport 300L Roof Box – Black Matte

Slimline Aerodynamic Roof Box for Road Trips, Family Holidays & Outdoor Adventures

The Thule Force 3 L Sport 300L Roof Box in Black Matte combines practical storage, rugged durability and a narrow aerodynamic design, making it an excellent choice for drivers who need extra luggage space without occupying the full width of their vehicle's roof.

With a 300-litre capacity, slim 63cm external width and maximum load capacity of 75kg, this versatile roof-mounted cargo box provides valuable additional storage for camping equipment, luggage, skiing gear and outdoor essentials.

Featuring Thule's durable AeroSkin finish, innovative PowerClick quick-mount system, secure SlideLock locking mechanism and convenient dual-side opening, the Thule Force 3 L Sport is designed for everyday practicality and active lifestyles.

Whether you're exploring the Scottish Highlands, travelling the North Coast 500 or heading away on a family holiday, this premium Thule roof box makes it easier to bring the equipment you need.

Key Features & Benefits

• 300L Storage Capacity – Extra space for luggage, outdoor equipment, camping essentials and winter sports gear.

• Narrow 63cm Profile – Designed to leave additional roof space for compatible accessories such as bike carriers.

• 75kg Maximum Load Capacity – Suitable for substantial additional luggage, subject to your vehicle and roof bar weight limits.

• Durable AeroSkin Finish – Tough, textured surface designed for regular use and outdoor adventures.

• Aerodynamic Design – Streamlined shape helps reduce wind resistance and road noise.

• PowerClick Quick-Mount System – Fast and secure installation with an integrated torque indicator that clicks when correctly tightened.

• SlideLock Security System – Separate opening and locking functions help ensure the lid is properly secured.

• Dual-Side Opening – Convenient access to luggage and equipment from either side of your vehicle.

• Lightweight 14.8kg Construction – Practical to handle while providing generous carrying capacity.

• Optimised Boot Access – Forward positioning helps minimise interference with your vehicle's rear tailgate.

• Winter Sports Compatible – Accommodates approximately 3–5 pairs of skis or 3–4 snowboards, depending on equipment dimensions.

• Black Matte Finish – Understated styling that complements modern cars, estates and SUVs.

Narrow Roof Box Design for Extra Versatility

One of the biggest advantages of the Thule Force 3 L Sport is its slimline design.

At just 63cm wide, this narrow car roof box is designed to occupy less space across your vehicle's roof compared with wider luggage boxes.

This can leave room for additional roof-mounted equipment, such as a compatible bike carrier, making it particularly appealing to cyclists, campers and outdoor enthusiasts who need to transport different types of gear.

The available space will depend on your vehicle's roof width, roof bar system and the accessories being fitted.

Practical 300L Storage for Everyday Adventures

The Thule Force 3 L Sport 300L Roof Box is ideal for drivers who want useful additional storage without choosing an unnecessarily large roof box.

Its 300-litre interior provides space for luggage, camping accessories, outdoor clothing and other travel essentials.

Whether you're packing for a weekend in the Highlands, travelling to a campsite or taking additional equipment on a family holiday, the Force 3 L Sport helps free up valuable space inside your vehicle.

Its versatile design makes it suitable for both occasional road trips and regular year-round use.

Durable AeroSkin Finish for Long-Lasting Performance

The Thule Force 3 L Sport features Thule's tough AeroSkin surface, designed to withstand the demands of an active lifestyle.

The textured Black Matte finish provides a durable exterior and a modern, understated appearance.

Combined with robust construction and extensive safety testing, the Force 3 L Sport is designed to provide dependable performance through regular outdoor use.

Aerodynamic Design for Comfortable Travel

The Thule Force 3 L Sport features a carefully shaped aerodynamic profile designed to complement modern vehicles.

Its streamlined construction helps minimise wind resistance and wind noise compared with less aerodynamic roof storage solutions.

This makes it particularly suitable for motorway journeys, family holidays and longer road trips where driving comfort matters.

Actual aerodynamic performance and fuel consumption will vary depending on your vehicle, roof rack setup and driving conditions.

Quick Installation with PowerClick

Thule's PowerClick quick-mount system makes fitting the Force 3 L Sport to compatible roof bars straightforward.

The integrated torque indicator produces an audible click when the mounting hardware reaches the specified tightening force.

This helps provide confidence that the roof box has been correctly secured before travelling.

The convenient mounting system makes it easier to install or remove your roof box whenever additional storage is required.

Secure Storage with SlideLock

The Thule Force 3 L Sport uses the innovative SlideLock security system.

Its separate opening and locking functions automatically secure the lid and provide a clear indication when the roof box is properly closed.

This makes it easier to check that your luggage and equipment are securely enclosed before setting off.

The system combines everyday convenience with practical security for family holidays and outdoor adventures.

Dual-Side Opening for Convenient Access

The dual-side opening design allows you to access the roof box from either side of your vehicle.

This is particularly useful when loading luggage, retrieving equipment during a journey or parking in areas where access is restricted.

The intelligently shaped lid also provides a natural grip for convenient opening and closing.

Ideal for Skiing & Winter Sports

The Thule Force 3 L Sport is a practical option for transporting suitable winter sports equipment.

Its interior can accommodate approximately 3–5 pairs of skis or 3–4 snowboards, depending on equipment dimensions.

With a maximum ski length of 175cm, it offers useful storage for compatible ski and snowboard equipment.

A suitable Thule ski carrier adapter is available separately for securing skis within the roof box.

Perfect for Scottish Road Trips & Outdoor Adventures

From weekend escapes around Loch Lomond to longer journeys through the Scottish Highlands, the Thule Force 3 L Sport 300L Roof Box provides convenient extra luggage space.

Its narrow profile is particularly useful for outdoor enthusiasts who want to combine roof box storage with other compatible roof-mounted accessories.

Whether you're travelling the North Coast 500, heading to the Cairngorms or preparing for a European skiing holiday, this versatile Thule roof box helps make room for your next adventure.

Technical Specifications

Specification	Details
Brand	Thule
Model	Force 3 L Sport
Product Code	645600
Colour	Black Matte
Capacity	300 litres
External Dimensions	191 × 63 × 42cm
Internal Dimensions	183 × 51 × 36.5cm
Height Above Roof Bars	39.4cm
Roof Box Weight	14.8kg
Maximum Load Capacity	75kg
Surface Finish	AeroSkin
Mounting System	PowerClick
Locking System	SlideLock
Opening	Dual-Side
Ski Capacity	3–5 pairs
Snowboard Capacity	3–4
Maximum Ski Length	175cm
Ski Carrier Adapter	Thule 694-5, sold separately
Front Clearance Requirement	Greater than 1265mm
Thule One-Key System	Compatible
Country of Manufacture	Great Britain

Vehicle & Roof Bar Compatibility

The Thule Force 3 L Sport is compatible with a wide selection of Thule roof bar systems, including WingBar Evo, WingBar Edge, WingBar and SquareBar Evo.

Thule SlideBar and ProBar Evo require the appropriate T-track adapter, while Thule Caprock requires a compatible cargo box mounting kit.

Before purchasing, check your vehicle's maximum roof load, roof bar compatibility and rear tailgate clearance.

The roof box weighs 14.8kg and has a maximum carrying capacity of 75kg. The combined weight of the roof box, roof bars and contents must remain within your vehicle's permitted roof load.

Thule specifies a front clearance requirement greater than 1265mm to help prevent contact with the vehicle's rear hatch.

Why Buy Your Thule Force 3 L Sport from West End Outdoors?

At West End Outdoors in Bearsden, Glasgow, we help customers find high-quality Thule roof boxes, roof bars and vehicle carrying solutions for their adventures.

Whether you're looking for a narrow roof box to leave space for a bike rack, additional luggage storage for family holidays or a versatile cargo box for winter sports, our team can help you choose suitable Thule equipment.

Shop the Thule Force 3 L Sport 300L Roof Box in Black Matte at West End Outdoors and enjoy more space for every adventure.