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Thule One-Key System Lock Cylinders - Qty 4

Thule One-Key System Lock Cylinders - Qty 4

Item # TH450400

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Thule Roof Rack,Hitch Bike Racks,Roof Bike Racks,Roof Box,Ski and Snowboard Racks - TH450400
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In Use/Installed

  • Roof Rack
  • Hitch Bike Racks
  • Roof Bike Racks
  • Roof Box
  • Ski and Snowboard Racks
  • Lock Cores and Cylinders
  • Keys
  • Thule
This kit lets you add new locks or replace existing cores for all your Thule products. These keyed-alike cylinders let you lock your racks, accessories, and other gear with one key. Extra-thick tumblers help prevent forced opening. Call 800-298-8924 to order Thule accessories and parts part number TH450400 or order online at Free expert support on all Thule products. Guaranteed Lowest Price and Fastest Shipping for Thule One-Key System Lock Cylinders - Qty 4. Accessories and Parts reviews from real customers.

  • All Info
  • Reviews (7)
  • Q & A (331)
  • Videos (2)
  • Photos
  • Why etrailer?

Thule Accessories and Parts - TH450400

This kit lets you add new locks or replace existing cores for all your Thule products. These keyed-alike cylinders let you lock your racks, accessories, and other gear with one key. Extra-thick tumblers help prevent forced opening.


  • 4 Lock cylinders let you make all your Thule accessories keyed alike
    • Replace existing Thule locks or add new locks to racks, carriers, and other gear
  • 2 Premium, over-molded keys are comfortable to grip and easy to identify on your key chain
  • Universal master key lets you remove existing Thule lock cores and install new ones
  • Enhanced security with extra-thick tumblers and long protrusions
    • Helps to prevent forced opening with screwdriver or like device
  • 2-Year limited warranty

Note: Key numbers should be recorded on Thule's product registration page and written down in the space provided in the One-Key System manual.

Key Number location

Thule's One-Key System makes it easy to secure all of your Thule racks, accessories, and other gear with just a single key. This kit includes 4 keyed-alike lock cylinders that are designed to mount in the empty lock core sockets of your Thule rack or to replace your rack's existing cores. It includes 2 over-molded keys that are comfortable to grip and easy to identify on your key chain, and 1 universal master key for adding or replacing lock cores.

Thule Traverse foot pack accepts OKS cylinders

Many Thule products - including roof rack feet - come ready to accept One-Key System cylinders. Just pop out the plastic lock plug, then use the included universal master key to install the new core in its place.

Thule Flat Top ski carrier accepts OKS cylinders

To replace an existing lock core simply unlock it and use the included master key to remove it. Once the existing core has been removed, pop in the new One-Key System lock.

450400 Thule One Key System Lock Cores with Keys - 4 Pack

Replaces Thule TH544

Video of Thule One-Key System Lock Cylinders - Qty 4

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Thule One-Key System Lock Cylinders Review

Hey guys. Today we're going to be taking a look at the Thule one key system locking cylinders. These are going to replace your factory plastic locking cylinders on your Thule products. They're going to be an upgrade. They're going to add security and prevent anyone from removing or tampering with your gear. Now you can pick these up in quantities of two, four, six or eight.

Really as many as you need to add more security to your accessories. They're very easy to install. What's great about this is we don't need to remove our accessories or our bikes or whatever to get these installed. We can keep it all in place. I'll go ahead and show you how to do that.The first thing we'll need to do is remove those plastic locking cores.

So I'm gonna unlock mine here. Then we can take off the whole cover and we're going to bring it down to our table so it's easier for you to see. Now to get it out of there, pretty simple, just push it out and then we can move on to grabbing our actual locking core. Now, in order for this to work out you'll need to have your master key. So go ahead and push that in.

You can see how that's going to allow some of the portrusions to come out there. You can see how the whole thing has that tumbler design with a master key in place. It's gonna allow us to insert it into the open cylinder here.Now we need to do this a certain way. You can see where those portrusions are sticking out. We'll need to line it up with the open slot right here to your right.

So it's going to push it all the way in until it stops. Then we can remove it and you can see with it in place, we're not going to be able to easily push it out like the plastic locks. So just goes to show you that no one is going to be able to tamper with it with the design that way.From there it's very simple. We just replace it and then lock it with one of our new keys. So we'll go back up top, put it in place, make sure it's all the way on, lock it up, and then we're all set. And then we just repeat the same process with our other accessories. Let's go ahead and do the bike rack next. So as I said, no need to remove the bike or the bike rack. Just going to align it up with the master key. Push it in place, make sure I've got it all the way in then to make sure it doesn't pull out I'll hold it in place my finger, pull out the master key. Bring in my new key and lock it up. And that's going to prevent anyone from removing our bike.So now just like I said in the title, one key system, we have our evo clamps and our bike rack keyed to the same key. Now we're not carrying around a bunch of keys so we can use one key to access all of our accessories. This is a huge plus. Now when it comes to removing your existing locking cores, the way we do that is you'll want to unlock them. Go ahead and take that cover back off. Come back down to our table here so we can see. Then you can use that same master key, push it in there and then push out.So what I'm saying is if you already have locking cores but you want to replace it with the one key system, you can use that same master key to push that lock out and replace it with a one key system. So again, a very simple design. Pick up as many locking cores as you'd like for all of your accessories. And again, that way you're only carrying around one key. Now the system does include two keys, so you can store maybe one in your glove box, one on your key ring, and you don't have to worry about losing anything.The keys themselves are fairly large, so they're going to be easy to operate. You're not gonna have any issues locking or unlocking your accessories. Now they also have a unique design with a textured grip. This is a step up compared to your older generic style can use that all look the same. You're not going to have any problem identifying these keys. They also have a large slot, so you can easily attach a key ring.Now let's take a closer look at the actual tumbler. One thing I'd really like to say is they really are tamper resistant. Thule makes them extra thick with long protrusions, that way they can't be accessed with a screwdriver or a similar device. Again, very heavy duty. We don't need to worry about anybody accessing these with anything but the keys. But with that being said, that's going to complete our look at the Thule one key system lock cylinders. Again, you can pick these up in either two, four, six, eight quantities, really, however many you need for your Thule accessories.

Customer Reviews

Thule One-Key System Lock Cylinders - Qty 4 - TH450400

Average Customer Rating:  4.9 out of 5 stars   (7 Customer Reviews)

This kit lets you add new locks or replace existing cores for all your Thule products. These keyed-alike cylinders let you lock your racks, accessories, and other gear with one key. Extra-thick tumblers help prevent forced opening.

- TH450400

Customer Service at etrailer is par none, both before the sale and after. I had an unpleasant experience elsewhere buying and installing a roof rack for my old Prius. After a few days of frustrations, I sent it back to that old online store. This time, I contacted etrailer to see what ALL I needed to install a rack on my new 2018 Honda CRV. They sent me the part numbers and a link to purchase. Viola! After they arrived, I had difficulty with one of the parts (at 69 yo my hands are not too strong or flexible) and contacted etrailer. They sent pictures and more thorough instructions on installing the rubber strip. Another VIOLA! I'm so very happy with my total experience at etrailer. Customer Service, truly, is not better any where else I have made online or brick-n-mortar purchases. 642341

- TH450400

I purchased the optional lock kit for the Thule Crossbar set. The price seems a bit high for this product but hopefully it will deter theft. 657366

- TH450400

My order was processed very quickly and shipped in a timely manner. Everything arrived in great shape. I am pairing my Thule crossbar kit with a Thule Force XT cargo box to increase my capacity for hauling camping gear for a family of 4 in a 2019 Subaru Forester. The installation and product review videos on your website are very helpful. 657365

- TH450400

Very informed personal will do business again 657262

- TH450400

Customer service was excellent. 656620

- TH450400

Super easy to change out the cylinders. 650147

- TH450400

Absolutely splendid. Well packaged arriving much sooner than I expected. Easy quick assembly and everything went together perfectly. I want to thank Natalie for all of the time and effort she put in to assure it was exactly what I needed. Thank you. 628333


Ask the Experts about this Thule Accessories and Parts
Do you have a question about this Accessories and Part?

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  • For a similar bike rack that can be converted from 4 to 2 bikes, I recommend the Pro Series Q-Slot # PS63138. This bike rack fits in 2 inch receivers but the 2 bike add-on can actually fit in a 1-1/4 inch hitch receiver. When you are hauling 2 bikes the weight capacity is 90 lbs, and when you install the add-on, that weight capacity is increased to 140 lbs. It secures the bikes to the bike rack by using the cushioned hooks and the hook-and-loop wheel straps This is our basic version of...
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  • I will be happy to help you pick out a Thule roof rack for your 2018 Honda CR-V! I recommend going with the AeroBlade crossbars as they will reduce both wind noise and drag when compared to traditional square or round crossbars. If your CR-V has flush mounted rails that run front to back then I recommend going with the roof rack which consists of the 47" WingBar Evo Bars # TH711200 Silver or # TH711220 Black, the Rapid Podium foot Pack # TH460R, and the Fit Kit # THKIT3166. This roof...
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  • For your 2019 Subaru Outback Wagon with the stowable rack system I recommend going with the Thule roof rack that uses the AeroBlade crossbars because they have reduced wind noise and drag over the square bar plus they can accommodate more accessories than the AeroBlade Edge crossbars. The parts that you need for this system include the 47" WingBar Evo Crossbars # TH711220 Black or # TH711200 Silver, the Podium Foot Pack # TH460R, and the Fit Kit # THKIT4063. I also recommend installing...
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  • Are Locks Included with Thule WingBar Evo System and Roof Clearance When Mounted to 2016 Mazda CX-5
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  • Lock Core Kit for Thule Evo Clamp Rack Feet TH710501
  • Thule Evo Clamp Foot Pack part # TH710501 on the Thule site does indeed show locks are NOT included but can be added. I also called Thule to confirm this is what they show. So, I went to our warehouse and checked several of these kits. Lock cores are NOT included but can be added using part # TH450400.
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  • To lock the Thule Hullavator part # TH898 to your Thule Aeroblade roof rack you'd need the # TH450400. This comes with four matching lock cores. Two that you'd install in the Hullavator and two that you'd install in the roof rack to lock it to the vehicle.
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  • Height Added to 2019 Jeep Wrangler JL Hard Top When Adding Thule Roof Rack
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  • Will Thule Aeroblade Edge Interfere with Panoramic Sunroof on 2018 BMW X1?
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  • Replacement Endcap for Thule AeroBlade Edge Roof Rack
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  • Thule SquareBar or Aero WingBar Roof Rack With Gutter Feet For 2016 Jeep Wrangler Unlimited
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  • Why is There a Crossbar Spread Difference Between Rhino-Rack, Thule, and Yakima Brands
  • The crossbar spread difference that you are seeing between different brands of roof rack systems has to do with the way that the racks are built. Each manufacturer tested their specific roof rack on a 2013 Toyota Prius and based the placement of the crossbars off of the data that they gathered. The specific spots are the best spots for weight capacity and performance. All manufacturers have great roof rack systems and I would have no hesitation recommending any of them. I do recommend...
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  • What Length of Crossbars Will Work With Thule Hullavator on 2017 Audi Q3?
  • To use the Thule Hullavator # TH898 with your 2017 Audi Q3 you would use the 47" crossbars, # TH711200; these would give you the necessary room for the Hullavator. A complete roof rack for your '17 Q3 would include those crossbars, along with the Thule Foot Pack for Aero Bars # TH460R and Thule Fit Kit # THKIT4027. The Hullavator # TH898 is a unique and highly effective kayak carrier due to its lift assist feature, which makes mounting your kayak a much less daunting prospect after...
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  • Recommended Roof Rack Components Compatible With Leer Topper with Rail Tracks
  • For your 2013 Ford F-150 with Leer Topper you can use the Thule Podium Roof Mounted Foot Pack # TH460R along with the fit kit # THKIT3101. Then you can use aero bars like # TH711520 or SquareBar # TH712500. An alternative option is the discontinued Thule Tracker II Foot if you have them along with the foot base # 753-2149. Then you can use the discontinued square load bars if you already have them. To lock your roof rack feet, I recommend the Thule One-Key System Lock Cylinders...
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  • Can the Thule Hullavator be Used With Thule WingBar Evo Bars
  • Yes, the Thule Hullavator Pro # TH898 is compatible with the Wingbar Evo Bars # TH711400 that you referenced. You will not need any adapters for this. I have attached our review video where the Hullavator has actually been installed on Thule Aero Crossbars. If your 2008 BMW 5 Series doesn't have existing rails or crossbars then you will want to use the Traverse Roof-Rack foot Pack # TH480R and Fit Kit # THKIT1325. You will want to use the 47 inch WingBar Evo Bars # TH711200 along with...
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  • Recommended Thule Roof Rack for 2008 Kia Soul with Flush Rails
  • For your 2018 Kia Soul with flush rails, the Thule Aeroblade Edge Roof Rack # TH7602B-TH7602B is a confirmed fit when using fit kit # THKIT4051. You will also want the lock cylinders # TH450400 for this application as well to secure your roof rack. We do ship to Puerto Rico and I've attached the shipping information for you. You will be able to view the exact shipping cost and the payment plan option we offer in your cart at checkout. Let me know if you have any further questions.
    view full answer...

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Info for this part was:

Video by:
Andrew K
Edited by:
Tyler C
Video Edited:
Jacob T
Installed by:
Cole B
Installed by:
Hayden R
Updated by:
Sarah W
Written by:
Matthew S

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