Trusted by Industry Leaders
Leading shipping and retail companies rely on ENFORCER locks to protect their fleets, reporting significant theft reductions. Join them in safeguarding your assets, reputation, and customer trust.








Featured Products
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Buying for a Fleet? Let's Talk First.
If you are securing multiple trucks, trailers, or containers, our team can help you build the right solution and provide fleet pricing based on your operation's volume.
We can also provide custom keying, product recommendations, and demo locks for field testing.
Request Fleet PricingThe ENFORCER Security Kit
All locks keyed alike with ABLOY cylinders; sized for the International ProStar Air Cuff fitment.
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ABLOY 341-25 padlock
7/16-inch boron steel shackle, 1-inch shackle length.
King Pin Lock 1111
Heavy-duty cast steel lock covers and locks the king pin to block unauthorized hookups.
Air Cuff Lock 3030
Thermoformed polycarbonate housing covers the dash-mounted air valves so the brakes cannot be released.
220K+
Keys cut last year at TSI
Precision-cut and managed at our Minnesota facility for fleets and operations across North America.
1215
Master systems currently on file
Supporting complex fleet, facility, and cargo security operations with organized master key control systems.

Protecting your bottom line from theft and pilferage
Since 1982, Transport Security has helped fleets protect cargo, equipment, and operations with rugged physical security solutions built for real-world trucking environments. Four decades later, ENFORCER® products continue to secure some of the most recognized fleets and supply chains in North America.
About Us
Transport Security continues to invest in U.S. manufacturing, stronger key control, and next-generation security solutions designed to meet the evolving challenges of cargo theft and fleet protection.






Strong, case hardened steel padlock with protected shackle. The extended case hardened steel body surrounding the shackle makes this padlock virtually impregnable against attack by cutting and prying tools. Suitable for heavy sliding doors, rail, trailers and warehouses. Engineered and proven for the demanding transportation environment.
342-25 padlocks are equipped with a 10 mm diameter, case hardened boron steel shackle to protect against physical attacks with drills, chisels, and cutting tools.
- Shrouded shackle: Yes
- Shackle Diameter: 7/16"
- Shackle Length: 1"
- Keyway: Sentry
- Keys Included: 2
- Restricted Keyway: Yes
Compare
Which swing door trailer security solution do I need?
Not sure which one to choose? We selected two heavy-duty options to protect your freight. Compare them below and choose the one that best fits your fleet's needs.
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Rear Door
Rear or Side Door
No
Yes
Yes
Yes
Stainless Steel
Heavy Guage Steel
Have a question? We are here to help.
Check out the most common questions our customers asked. Still have questions? Contact us at 952-442-5625 and our customer service will be happy to place your order.

Do you ship overseas?
Orders through our website can only be delivered to the United States. If you would like to place an order for international delivery, please call: 952-442-5625 and our customer service will be happy to place your order.
Do I need to setup an account to place an order?
You do not need to set up an account to place an order. However creating an account allows you to store your shipping information and see order history.
Can I reorder keys?
Yes, if you would like to reorder keys, please contact our customer service team for assistance at 952-442-5625 or orders@transportsecurity.com.
How long will it take to get my orders?
Please allow 7-10 days for orders to ship. All orders are custom-built. A restocking fee of 20% will apply to cancellations or returns.
What is your return policy?
If you are not completely satisfied with a purchase, we invite you to review our policy on refunds and returns.
A restocking fee of 20% will apply to all online orders that are canceled or returned except in cases where we fail to fulfill the shipment within our standard lead time. All other returns must be authorized within 30 days of receipt of shipment for a credit, less any applicable shipping, admin, miscellaneous charges. A 20% restocking fee will be assessed on returns over 30 days from receipt of shipment. No returns and refunds are acknowledged after a year from shipment date.
Please contact your sales rep or call us at 952-442-5625 or email us at orders@transportsecurity.com to get a return authorization number BEFORE you send back the items. Mark the outside cartons with the (RMA) return authorization number. Authorized returns MUST be shipped within 10 days from return approval date to our address. Unauthorized returns will be refused. Any items that are used or improperly handled, or damaged due to improper care will not be eligible to be returned. Customized sale items are classified as a final sale and are not returnable.
Any questions?
You can contact us at 952-442-5625 and we will be happy to assist you.


































