Thule One-Key System lock cylinders 4-pack — Silver/Black, keyed alike with Comfort Key

The Thule One-Key System 4 Pack lets you swap out up to four Thule lock cylinders so a single comfort key operates them all.

If you own multiple Thule accessories—roof boxes, bike carriers, tow bars or roof racks—managing several different keys is tedious. This 4-pack of lock cylinders replaces existing Thule locks quickly and rekeys them to a single, grip-friendly Thule Comfort Key so you can lock and unlock all matched products with one key. The set includes four cylinders finished in a silver and black trim and fits the standard Thule locking interfaces.

How do I install these replacement lock cylinders?

Installation is straightforward and designed to be completed with minimal tools. Each cylinder is designed to fit Thule products that accept replaceable cores; you remove the old cylinder and insert the new one following the product-specific instructions. No special cutting or locksmithing is required when you’re replacing compatible cylinders.

• Remove retaining screw or clip from the original cylinder
• Pull the old cylinder out and align the new cylinder with the housing
• Secure the cylinder with the original screw/clip and test the Comfort Key
• Repeat for each Thule product to standardize on one key

Which Thule products are compatible with the One-Key System?

The One-Key system is compatible with a wide range of Thule roof racks, cargo boxes, bike carriers, and hitch-mounted accessories that use replaceable lock cores. Check the product manual or Thule support pages to confirm compatibility for a specific model. If a product uses a fixed or non-replaceable lock, this cylinder will not fit.

• Commonly compatible: Thule roof boxes and rack feet using replaceable cores
• Works with many bike carriers and hitch locks designed for replaceable cylinders
• Not suitable for models with integrated, non-removable locks
• Refer to Thule product documentation for exact fit details

What is included in the 4-pack and what are the physical details?

This kit contains four lock cylinders keyed alike plus a Thule Comfort Key for easy handling. The cylinders have a silver and black appearance to match many Thule accessories and are packaged compactly for storage or shipment. The set dimensions are suitable for shelf storage or carrying in a vehicle service kit.

• Four lock cylinders keyed to the same code
• One Thule Comfort Key with an ergonomic grip
• Package dimensions: 1.3" H × 5.7" L × 2.9" W
• Silver and black finish to coordinate with Thule products

How does standardizing to one key help in everyday use?

Using one key for multiple Thule accessories reduces time and hassle when loading or securing gear. You won’t need to search for different keys at the roadside or when preparing for a trip, and the Comfort Key design makes inserting and turning easier in cold or wet conditions. It also simplifies spare-key management for family members or co-users.

• Eliminates multiple keys for roof and hitch accessories
• Speeds up loading and locking tasks before travel
• Comfort Key improves grip and ease of use in varied weather
• One spare key covers all rekeyed Thule products

Who is this for? The Thule One-Key System 4 Pack is intended for Thule owners who use several lockable accessories and prefer the convenience of a single, shared key. It’s ideal for families, fleet vehicles, or anyone who wants fewer keys without replacing their entire set of Thule products. If your Thule equipment accepts replaceable lock cylinders, this set provides a quick, practical way to standardize key access across multiple items.