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  1. Cable Locks
  2. CURT
  3. 6 Feet Long
  4. Utility Lock
  5. Keyed Unique
  6. Steel
Curt Adjustable Cable Lock - Steel - 6' Long

Curt Adjustable Cable Lock - Steel - 6' Long

Item # C23666
Our Price: $39.63
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Use this cable lock to secure your gear. Great for locking your bike to your rack. Push the button on the lock assembly to automatically cinch the cable around your gear, eliminating slack. Vinyl-coated braided steel construction. 2 Keys included. 1-800-940-8924 to order CURT cable locks part number C23666 or order online at Free expert support on all CURT products. Great prices and Fastest Shipping for Curt Adjustable Cable Lock - Steel - 6' Long. Cable Locks reviews from real customers.
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  • Reviews (18)
  • Q & A (0)
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CURT Cable Locks - C23666

  • CURT
  • 6 Feet Long
  • Utility Lock
  • Keyed Unique
  • Steel

Use this cable lock to secure your gear. Great for locking your bike to your rack. Push the button on the lock assembly to automatically cinch the cable around your gear, eliminating slack. Vinyl-coated braided steel construction. 2 Keys included.


  • Cable lock secures your gear to your bike rack, roof rack, cargo carrier, and more
  • Automatic cinching lets you tighten the cable snuggly around your gear quickly and easily
    • Insert the cable into the lock assembly and press the red button to tighten the cable
  • Braided steel construction is strong and difficult to cut
  • Vinyl coating prevents the cable from scratching your equipment and provides corrosion resistance
  • 2 Keys are included


  • Cable dimensions: 3/8" diameter x 6' long
  • 1-Year limited warranty

This cable lock not only helps prevent theft of your gear, but it also cinches tightly around your gear to help keep it immobilized during transport. The lock assembly lets you adjust the cable to your desired length, pull it tight, and secure it in place - similar to how a buckle works on a tie-down strap. Simply thread the cable through the lock assembly and press the red button to quickly and easily cinch the cable around your bike, cargo, sports equipment, or other gear. Then insert the loose end of the cable into the port on the lock assembly to secure the cable. When you're ready to unload your gear, just use one of the 2 included keys to unlock the cable from the port, and then release the tension on the cable by pressing the red button.

23666 Curt Heavy-Duty, Multi-Use Security Cable - 6 Foot

California residents: click here

Customer Satisfaction Score:

Customer Reviews

Curt Adjustable Cable Lock - Steel - 6' Long - C23666

Average Customer Rating:  4.7 out of 5 stars   (18 Customer Reviews)

Use this cable lock to secure your gear. Great for locking your bike to your rack. Push the button on the lock assembly to automatically cinch the cable around your gear, eliminating slack. Vinyl-coated braided steel construction. 2 Keys included.


We are very happy with the Yakima Ridgeback2, along with the Yakima Tube Top Bike Adapter for my wife's Step-Thru and the Curt Adjustable Cable Lock for unattended safety. Ease of attachment to our vehicle takes approximately 3 minutes. Very solid choice of purchase. Excellent service from etrailer for ordering and immediate shipping and delivery.


This cable lock is great to secure two bikes to our hitch rack. Super easy to use and flexible in that it can be used in multiple configurations.


The lock itself has worked great. But the keys not so much. The grip for the keys is made of cheap plastic. After the first week of owning the lock, the plastic grip on key broke. I wasn't too worried because I had a second key. But it is a year later and now the second key broke. I can still open the lock. But the broken grip makes it harder and I am unable to attach the key to a key ring.


Very versatile and many possible applications.
quality!. Can be used with confidence on bikes, rv batteries, rv surge protector and a host of other functions. Long length makes it easy to utilize.


Allows locking bike with variety of cable lengths. Convenient and locking mechanism works easily. Great product.


I plan to use this product to lock al the bikes on the rack together while driving to the beach, or parks


Its a cable lock.


Great lock for the money.
Able to lock
multiple bikes.



Excellent product, good quality.


Got my stuff at the right price and quick. with all the e-commerce gone wrong , its refreshing to see one organization that gets it right.


This lock is the best! It is extremely versatile and yet gorilla strong. Easy to install and remove. I highly recommend it.


Great product that has kept my boat safe and sound!




Simple to use and does what it should.


Does what it says on the tin!


Quick delivery! Great customer service. Thank you!





See what our Experts say about this CURT Cable Locks

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  • Lock Options for Use with Curt 4-Bike Tilting Hitch Rack C18030
    We offer Curt Adjustable 6-Foot Cable Lock # C23666 for use with your hitch bike rack # C18030 but really any cable lock will serve to secure your bikes to the rack and even secure the rack to your hitch. The cable lock # e98891, which is 10-feet, should provide enough length to allow you to route it through each of the bikes, and also through the small ring on the upright tube. You can then secure the rack and bikes to the hitch with the one cable lock. If you prefer you can certainly...
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  • Using a Stabilizer Strap with a 2017 Mini Clubman 2 Door Hatch
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  • Recommended Anti-Rattle Trailer Hitch Receiver and Lock Compatible With Curt Bike Rack
    The Curt 2 Bike Platform Rack # C18085 comes with the threaded anti-rattle hitch pin, but it does not have a locking option for that rack. There isn't a locking hitch that fits that pin, so I recommend using a cable lock like # CAB-10 or # C23666 and running the cable through the safety chain loops of the hitch to secure the bikes and the rack.
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  • Will a Swagman XC 2-Bike Rack Platform Style hold a 650bx3 or 27.5x3 wheel size bike?
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  • Recommended Hitch-Mounted 2 Bike Rack for 2017 Toyota RAV4
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  • How to Lock Curt 2 Bike Platform Rack for Fat Bikes C18085-FB
    Curt's 2 Bike Platform Rack for Fat Bikes # C18085-FB includes an anti-rattle threaded hitch pin that will reduce motion of the rack in your hitch but this feature prevents use of a standard hitch lock. No worries though since you can use a simple cable lock such as # e98891 (10-foot) or # C23666 (6-foot) to both lock your bikes to the rack and also to lock the rack to your hitch receiver by running the cable through a safety chain loop on your hitch. If you prefer a 2-bike Fat Bike platform...
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  • Recommended Lock For Curt Bike Rack & Hitch
    Manufacturers of hitch accessories such as bike rack and cargo carriers make the threaded bolts and weldnuts in the accessories uniquely threaded so that you cannot use other manufacturer's products. For example the Swagman lock # S64027 will not fit the Curt Premium 4 Bike Rack for 2" Hitches # C18064. To lock the bike rack to the hitch I recommend using Curt Adjustable Cable Lock # C23666. You would just need to route the cable through the bike rack and then through the safety chain...
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  • Distance Between Arms of Curt 4-Bike Rack 18064
    I can confirm for you that the distance between the arms of the Curt Premium 4-Bike Rack # C18064 is 14 inches at the wide end and 8 inches at the narrow end. You can also see this at roughly the 2:10 mark of the linked video review I added for you to check out. Keep in mind if you do plan on carrying any children's or alternative-frame bikes (with a step-through frame, for example) you will need Curt Bike Frame Adapter Bar # C18016 to give those bikes a horizontal mounting point. Additionally...
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  • Is there a Locking Anti-Rattle Hitch Pin for Curt Platform Bike Racks
    Curt bike rack 18086 does not have a locking anti-rattle hitch bolt option. What we recommend is to use the regular hitch bolt and then use a cable lock, # C23666, to secure the bikes and rack to the hitch by running the cable through the hitch safety chain loops. I have linked a video review of this cable lock for you.
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  • What Trunk-Mounted Bike Rack Do You Recommend for My 2021 Toyota Corolla Hatchback?
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    As a fellow Jeep JKU owner, I know the perfect solution for you. For a hitch I recommend using the etrailer # e98856 because it has an elongated receiver tube that will help extend your bike rack out past the spare tire on your 2015 Jeep JKU. Finding a 5 bike rack with a long enough receiver shank is a little bit more challenging, but I recommend using the Yakima RidgeBack for 5 Bikes # Y02459 because it provides 9-1/2" from the center of the hitch pin hole to the closest part of the...
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  • Parts Needed to Install Curt Bike Rack on a 2012 Nissan Versa Hatchback
    The most essential thing you will need to carry the Curt bike rack part # C18085 on your 2012 Nissan Versa hatchback is a trailer hitch. Which the Curt Class 1 Hitch # C11348 is a confirmed fit and would work well for this. For locking hand knobs for the rack you would want the part # C18090. For a cable lock to lock the rack to your hitch you would want the part # C23666.
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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jacob T
Video Edited:
Jacob T
Employee Chelsea B
Written by:
Chelsea B
Employee Wilson B
Updated by:
Wilson B
Employee Kristina F
Updated by:
Kristina F
Employee Isabelle B
Updated by:
Isabelle B

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