Thule One-Key System lock cylinders 4-Pack — Silver/Black with Comfort Key, keyed alike for Thule racks and carriers

The Thule One-Key System 4 Pack lets you swap the lock cylinders on several Thule products so a single Thule Comfort Key opens them all.

If you own multiple Thule carriers, roof racks, or accessories, juggling different keys can be a hassle. This 4-pack of Thule lock cylinders provides a straightforward way to standardize your locks: remove the old cylinders and install these matching ones so one key operates everything. The set includes the grip-friendly Thule Comfort Key and fits into compatible Thule products that accept replaceable cylinders.

How do I install these replacement lock cylinders?

Installation is designed to be quick and tool-minimal, typically requiring only the existing key and a simple turn-and-pull action to remove the old cylinder. Each new cylinder slides into the lock housing and locks in place so the single Thule Comfort Key can operate it immediately.

• Remove original cylinder using the current key or instructions from the product manual
• Insert the new Thule cylinder until it clicks into the housing
• Test with the Thule Comfort Key to confirm smooth operation

Which Thule products are compatible with this One-Key pack?

These cylinders are compatible with many Thule roof racks, boxes, bike carriers, and accessories that use replaceable lock cylinders. Check your product manual or Thule’s compatibility guide to confirm whether your specific model accepts this cylinder design.

• Roof boxes and cargo carriers with removable cylinders
• Bicycle and ski carriers that use Thule-style lock inserts
• Accessory locks on roof rack components and adapters

What are the set contents and physical specs?

This package contains four lock cylinders keyed alike and includes the Thule Comfort Key for improved grip and turn control. The product ships in compact packaging sized about 1.3" high × 5.7" long × 2.9" wide, making it easy to store or carry as spares.

• Set of 4 matching lock cylinders (silver and black finish)
• Ergonomic Thule Comfort Key included for better handling
• Compact package dimensions for straightforward storage

Can I expand or replace lost keys later?

If you need additional keys or want to change which locks are keyed alike, Thule offers spare keys and other One-Key cylinders that can be matched to your set. Keep your key code or product details handy to order compatible replacements.

• Order extra Thule Comfort Keys or matched cylinders as needed
• Keep original key code for easier replacement ordering
• Mix and match cylinders across Thule products to standardize keys

Who is this for: The Thule One-Key System 4 Pack is ideal for active vehicle owners who use multiple Thule accessories—roof boxes, bike racks, or load carriers—and want the convenience of one key instead of several. It suits DIY installers who want a quick, no-fuss cylinder swap and anyone looking to simplify daily access to their Thule gear while keeping original security and fit intact.