Thule 605 Ascent 1700 Rooftop Cargo Box (Black)

Carries 17 cubic feet or up to 110 lbs of cargo per box
QuickGrip mounting system
Dual-Side access to stowed gear

Thule’s new Ascent series is designed to reflect the styling of today’s vehicles and care for the carrying needs of active outdoors people and travelers alike. The addition of the Quick Grip¿ mounting hardware adds to the long list of features this box series offers. High grade affect & scratch resistant material sets the Ascent series with the exception of the entire rest. NEW! Quick Grip¿ hardware for easy on/off attachment to roof racks. Access gear from either side of the car the use of our patented Dual-Side opening feature. Smooth, aerodynamic design for minimal wind resistance. Easy opening and closing with Thule’s NO-GO¿ Central Locking, One Key System. Mounts to most factory installed and aftermarket racks. Four box sizes to be had.

Thule’s new Ascent series is designed to reflect the styling of today’s vehicles even as handling the carrying needs of active outdoors people and travelers alike. Depending on the model chosen, it provides from 11 to 17 cubic feet/110-lbs of rooftop stowage per unit. This frees up precious space in your vehicle, even as complementing your overall appearance on the road with the classic Thule rooftop look. It is compatible with all Thule base racks and most any aftermarket or factory roof rack, and installs and will also be removed from your rack in minutes without using tools via the Thule Quick-Grip mounting system. Additional features include and aerodynamic design for increased fuel efficiency and a quieter ride, access to the box from the left or right side, a Safe locking system and more.

A mounted Thule Ascent Rooftop Cargo Box used to haul gear to the beach

Reclaim your vehicle’s interior space for outside adventure or trip with the Ascent Rooftop Cargo Box series.
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Get Your Gear Out of the Car and onto Your Roof

Thule’s cargo boxes are designed with your active life in mind. Compatible with all Thule rack systems, in addition to round bar and most factory racks, they will let you get your gear out of your car and onto the top of your roof – saving precious interior space, keeping moisture out of your vehicle when hauling snowsport or watersport gear and securing items that would in a different way roll around all the way through transit. They’re innovative, built to last, are easy to load and unload and break down quickly and easily when the time comes. In spite of everything, Thule’s assortment of rooftop boxes offers you many options to transport your gear safely, easily and in style. Simply make a choice the person who best fits the length of your vehicle roof and rack and experience the difference they make in your travels.

Thule Ascent Rooftop Cargo Box

Compatibility ensured with the availability of four cargo box sizes (Ascent 1700 pictured).
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Schematic of the mounting parts and procedure of the Thule Ascent Rooftop Cargo Box

Easy rack mounting and securing with the Quick-Grip mounting system and included tie down straps.
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A demonstration of the dual-side opening capabilities of the Thule Ascent Rooftop Cargo Box

Convenient dual-side access to cargo.
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The One-Key lock system used with the Thule Ascent Rooftop Cargo Box

Heavy-duty lid and lock safety and security.
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Installation with the Quick-Grip System

Installation and/or removal of the Ascent Rooftop Cargo Box from your rack is easy via Thule’s patented Quick-Grip mounting system. This tool-free mounting system permits you to attach your rooftop box to virtually any roof rack in less than 5 minutes. The Quick-Grip system utilizes a two-armed pincer mechanism controlled by a simple knob keep an eye on. The Ascent contains four of these knobs each embedded along internal tracks/strips within the bottom of the box. These will also be moved forward or back along these tracks to accommodate your existing rack crossbar configuration and the length of your vehicle. As a knob is turned, the pincers of the Quick-Grip are released down and inward from the bottom the cargo box. These clamp around crossbars providing fast, maximized holding power that you’ll count on.

Simple Use, Stowage and Security

Once Thule’s Ascent Rooftop Cargo Box is installed it is ultra easy to use. Safe, slip-free stowage of gear is provided via two tie down straps, included with the cargo box, that connect to the inner edges of the Quick-Grip units and cinch down tightly. In addition, easy access to gear is guaranteed with Thule’s dual-side opening system built into the lid of Ascent series models that allows the lid to be opened from either lengthwise side of the box. This system allows for one-handed usage, with the lid staying in place when opened. In spite of everything, the Ascent Rooftop Cargo Box provides for maximum and convenient security of your gear via an oversized lock with an ergonomic knob that may be easy to grasp and turn, even even as wearing gloves. A duplicate key is included with each unit, and new lock cores and lock upgrades will also be added to existing units as you should.

What’s in the Box

1-Thule Ascent Rooftop Cargo Box, 2-tie down straps, 2-lock keys, 1-user’s manual/warranty card.

Key Features

  • Dual-side opening for easier loading and unloading from either side of the vehicle
  • Quick-Grip mounting system for fast, easy, tool-free installation and removal
  • Heavy-duty lid and base protects gear and keeps out the elements
  • SecureLock ensures that every one gear is locked and box is properly closed prior to driving
  • Allows for between 11-17 cubic feet of cargo depending on model, or up to 110-lbs of cargo by weight per box
  • 2 One-Key Locks (included) Safe box contents and lock the box to the carrier
  • Fits Thule rack systems, in addition to round bars and most factory racks
  • Reduces over-head clearance
  • Aerodynamic design minimizes wind resistance for greater fuel efficiency and quieter travel
  • Four box sizes available

Technical Specifications

605 Ascent 1700
604 Ascent 1600
603 Ascent 1500
602 Ascent 1100
Volume (CF)
17 cubic feet
16 cubic feet
15 cubic feet
11 cubic feet
Length (in)
Width (in)
Height (in)
Weight (lbs)
40 lbs.
37 lbs.
35 lbs.
31 lbs.
Mounting System
Box Opening
One-Key Lock System
SecureLock Box Closure
Capacity – Skis
6-8 pairs
(max length 217 cm)
6-8 pairs
(max length 186 cm)
5-6 pairs
(max length 210 cm)
Capacity – Snowboards
(max length 155 cm)

Limited Lifetime Warranty

Thule will warranty all Thule brand car rack systems and its accessories manufactured by Thule all the way through the time that an original retail purchaser owns the product. This warranty terminates if a purchaser transfers the product to any other person. No warranty is given for defects caused by normal wear and tear, cosmetic rust, scratches, accidents, unlawful vehicle operation, or modification of, or any types of repair of a load carrier system other than those authorized by Thule.

About Thule

Thule was once founded in 1942 by the Thulin family, when Eric Thulen, a true lover of the outdoors, put the Thule name on a pike trap he designed and began to sell in Scandinavia. It wasn’t long before he added other practical items to the company’s portfolio. By the 1960s, the company began to pay attention to car-related products, including its first roof rack. The Thulin family sold Thule to the publicly listed company Eldon in 1979, and it has continued to grow both organically and through acquisitions ever since. The Thule Group is a world leader in providing transport solutions for an active life.

Carries 17 cubic feet or up to 110 lbs of cargo per box
QuickGrip mounting system
Dual-Side access to stowed gear
Mounts to all Thule Racks and most factory installed and aftermarket racks
Holds 6-8 pairs of skis up to 217cm or 110 lbs 4-6 snowboards