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  • S5 Coupler Locks Demco 2-5/16" Adjustable Coupler Lock (LCS002 Demco) – Custom Fit for Dump and Equipment Trailers with C-Channel Mounts. (Includes Trimax Puck Lock)
  • S5 Coupler Locks | LCS002 DEMCO Product OverviewS5 Locks
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Demco 2-5/16" Adjustable Coupler Lock (LCS002 Demco) – Custom Fit for Dump and Equipment Trailers with C-Channel Mounts. (Includes Trimax Puck Lock)

4.8 out of 5 stars (30)

$239.00
Get $10 off instantly: Pay $229.00 $239.00 upon approval for the Amazon Store Card. No annual fee.
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Style: DEMCO 2-5/16"
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Customers usually keep this item.

About this item

  • SECURE YOUR TRAILER: Specifically designed for DEMCO 2-5/16 inch adjustable couplers with C-channel mounts, providing a tight, custom fit for ultimate trailer security.
  • CUSTOM FIT DESIGN: Specifically engineered for Demco 2-5/16” Adjustable Couplers on dump and equipment trailers with C-channel mounts.
  • MAXIMUM SECURITY: Provides robust theft prevention with a durable locking mechanism and high-strength materials.
  • HEAVY-DUTY CONSTRUCTION: Built to withstand harsh environments and daily wear and tear.
  • MADE IN THE USA: Proudly manufactured in the United States, ensuring top-quality craftsmanship and materials.
  • TRUSTED BRAND: Backed by S5 Coupler Locks’ reputation for reliable trailer security solutions.
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This item: S5 Coupler Locks Demco 2-5/16" Adjustable Coupler Lock (LCS002 Demco) – Custom Fit for Dump and Equipment Trailers with C-Channel Mounts. (Includes Trimax Puck Lock)
$239.00
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Ships from and sold by S5 Locks.
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$81.01
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$66.99
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Sold by Dune Auto Company and ships from Amazon Fulfillment.
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Product description

LCS001
LCS002 RAM
LCS002 Demco
LCS006 Combo
LCS005D
LCSPIN3
Customer Reviews
5.0 out of 5 stars 3
4.4 out of 5 stars 12
4.8 out of 5 stars 30
5.0 out of 5 stars 2
1.0 out of 5 stars 1
Price $185.00 $239.00 $239.00 $285.00 $185.00 no data
Material Steel Steel Steel Steel Steel Steel
Compatible Sizes 2" & 2-5/16" 2-5/16" 2-5/16" 2-5/16" 2-5/16" 3" Pintle/Lunette Ring
Finish Powder Coated Powder Coated Powder Coated Powder Coated Powder Coated Powder Coated
Made in USA

Product information

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S5 Coupler Locks Demco 2-5/16" Adjustable Coupler Lock (LCS002 Demco) – Custom Fit for Dump and Equipment Trailers with C-Channel Mounts. (Includes Trimax Puck Lock)


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Customer reviews

4.8 out of 5 stars
30 global ratings
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Customers say

Customers find the coupler lock to be solidly constructed. They consider it a cost-effective solution.
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6 customers mention durability, 6 positive, 0 negative
Customers praise the lock's solid construction.
This thing is well built and solid. It would take a lot of time and effort to steal a trailer with this lock.Read more
Heavy duty lock. Very well built.Read more
I bought this lock and It is a solid built lock....Read more
Works great. A little cumbersome to put on every time but its heavy duty and seems to deter would be thieves.Read more
5 customers mention cost-effective, 4 positive, 1 negative
Customers find the lock to be cost-effective, with one mentioning it offers the best value for security.
...high quality materials to help prevent theft of your trailer...worth every penny and HIGHLY RECOMMENDED!Read more
Just get this !!! It's worth it. The other guy at "proving industry's " makes you purchase 2 products to secure your trailer....Read more
...It’s a much more cost-effective solution than the Proven lock, which requires a separate $150 add-on just to secure the coupler hardware....Read more
This is a high quality trailer lock. The initial cost seems expensive but when you consider the value you get it is a no brainer....Read more
Best Value to security
5 out of 5 stars
Best Value to security
This is a high quality trailer lock. The initial cost seems expensive but when you consider the value you get it is a no brainer. I like the fact it covers the hitch bolts, other brands would require you to buy an additional lock. Will definitely buy again when I aquire more trailers.
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Top reviews from the United States

  • 5 out of 5 stars
    Best Value to security
    Reviewed in the United States on December 18, 2025
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    This is a high quality trailer lock. The initial cost seems expensive but when you consider the value you get it is a no brainer. I like the fact it covers the hitch bolts, other brands would require you to buy an additional lock.

    Will definitely buy again when I aquire more trailers.

    Best Value to security
    5 out of 5 stars
    Best Value to security
    Reviewed in the United States on December 18, 2025

    This is a high quality trailer lock. The initial cost seems expensive but when you consider the value you get it is a no brainer. I like the fact it covers the hitch bolts, other brands would require you to buy an additional lock.

    Will definitely buy again when I aquire more trailers.

    2 people found this helpful
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  • 5 out of 5 stars
    Buy it.
    Reviewed in the United States on December 13, 2025
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    I definitely recommend this product. Good quality and craftsmanship and keeps my trailer safe.

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  • 5 out of 5 stars
    Great coupler locks... Couldn't be happier.
    Reviewed in the United States on April 9, 2026
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    I recently picked up a new side-by-side trailer that came with a bolt-on bulldog-style coupler. While I use Proven and Gus Hill locks on my other two trailers, those couplers are welded on, so there are no bolts to worry about.

    To secure this new setup, I swapped the factory coupler for a Demco EZ-Latch with the S5 Coupler Lock. I went this route specifically because the lock design prevents anyone from removing the bolts and the hitch. It’s a much more cost-effective solution than the Proven lock, which requires a separate $150 add-on just to secure the coupler hardware. This setup handles both jobs for a lot less.

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  • 5 out of 5 stars
    This thing is solid and seems bulletproof!
    Reviewed in the United States on June 2, 2026
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    The description provided by the seller is accurate. Be sure you’re getting the correct one for the coupler you have or that 20% restocking fee is going to hurt. This works great for the C channel coupler that bolts on. Specifically, the Demco 2 5/16 coupler that bolts on to equipment trailers. Unlike some of the other knock-off brands (I know cuz I bought one for another trailer), this thing is well built and of solid construction. There are no pieces that screw together like the knock-offs which means thieves would have to cut this thing off with a torch since a pry bar won’t do anything. Weak points? I don’t think so! I’m happy with this purchase!

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  • 5 out of 5 stars
    A lock that actually works
    Reviewed in the United States on June 3, 2026
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    This thing is well built and solid. It would take a lot of time and effort to steal a trailer with this lock.

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  • 5 out of 5 stars
    Works as Designed
    Reviewed in the United States on September 8, 2025
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    Works great. A little cumbersome to put on every time but its heavy duty and seems to deter would be thieves.

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  • 5 out of 5 stars
    Demco trailer lock you should consider.
    Reviewed in the United States on February 16, 2026
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    Heavy duty lock. Very well built.

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  • 5 out of 5 stars
    This is the best, Perfect design.
    Reviewed in the United States on April 24, 2025
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    Just get this !!! It's worth it. The other guy at "proving industry's " makes you purchase 2 products to secure your trailer.

    This is one product that does it all for cheaper.

    This is the best, Perfect design.
    This is the best, Perfect design.
    This is the best, Perfect design.
    This is the best, Perfect design.
    5 out of 5 stars
    This is the best, Perfect design.
    Reviewed in the United States on April 24, 2025

    Just get this !!! It's worth it. The other guy at "proving industry's " makes you purchase 2 products to secure your trailer.

    This is one product that does it all for cheaper.

    2 people found this helpful
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Product Summary: S5 Coupler Locks Demco 2-5/16" Adjustable Coupler Lock (LCS002 Demco) – Custom Fit for Dump and Equipment Trailers with C-Channel Mounts. (Includes Trimax Puck Lock)

From S5 Coupler Locks

4.8 out of 5 stars, 30 ratings

Customer reviews

100+ viewed in past month

About this Item

  • SECURE YOUR TRAILER: Specifically designed for DEMCO 2-5/16 inch adjustable couplers with C-channel mounts, providing a tight, custom fit for ultimate trailer security.
  • CUSTOM FIT DESIGN: Specifically engineered for Demco 2-5/16” Adjustable Couplers on dump and equipment trailers with C-channel mounts.
  • MAXIMUM SECURITY: Provides robust theft prevention with a durable locking mechanism and high-strength materials.
  • HEAVY-DUTY CONSTRUCTION: Built to withstand harsh environments and daily wear and tear.
  • MADE IN THE USA: Proudly manufactured in the United States, ensuring top-quality craftsmanship and materials.
  • TRUSTED BRAND: Backed by S5 Coupler Locks’ reputation for reliable trailer security solutions.

Product Description

This lock is specifically designed for the DEMCO 2-5/16" EZ-Latch coupler, commonly used on equipment and dump trailers, providing a comprehensive solution that not only secures the coupler but also protects the bolts from tampering. Offering enhanced security, it combines superior quality and effective protection to safeguard both coupler and bolts from unauthorized removal. Unlike competing products that require both a C-channel lock and a coupler lock, this all-in-one design simplifies and strengthens your security. Made to fit the DEMCO 2-5/16" EZ-Latch adjustable coupler, this lock is ideal for trailers featuring a C-channel securing the coupler with two bolts. It’s crafted from 1/4" and 3/16" heavy-duty structural steel, making it bolt cutter-proof and weather-resistant for reliable durability. The standard Trimax Puck Lock, included for added protection, shrouds the locking mechanism in steel. Installation is quick and easy, allowing you to secure your trailer with minimal hassle. Proudly designed and manufactured in the USA, this lock meets high standards of quality and performance. Choose this premium lock for your DEMCO 2-5/16" EZ-Latch coupler and gain peace of mind knowing your trailer and equipment are safely protected.

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  • DEMCO 2-5/16"
  • RAM 2-5/16"
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