CURT 23501 Trailer Hitch Lock, 1/2-Inch Pin for 1-1/4-Inch Receivers

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Product guide

CURT 23501 Trailer Hitch Lock, 1/2-Inch Pin for 1-1/4-Inch Receivers

Receivers: The CURT 23501 trailer hitch lock is a keyed barbell-style pin designed for a 1-1/4-inch receiver with a 1/2-inch pin hole. Its quarter-turn operation, dust cap and two included keys suit owners looking to secure a compatible ball mount or hitch accessory, though customer feedback raises fit concerns worth checking against the receiver and mount dimensions.

At a glance

Barbell-style keyed hitch pin for securing a ball mount or hitch-mounted accessory in a receiver.
The listing specifies fit for a 1-1/4-inch receiver with a 1/2-inch hole and says it suits most Class 1 and Class 2 hitches.
Quarter-turn lock activation is intended to simplify locking and unlocking.
A dust cap is described as protecting internal lock components, while chrome plating is claimed to resist corrosion.
Two keys are listed as included.

Price

$25.04Save 19%

Reference price: ~~$30.95~~

Price checked: Nov 14, 2026

View offer

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Pros and cons

Pros

Two keys provide a spare or allow a second person access.
Quarter-turn activation avoids multiple turns during locking and unlocking.
A dust cap and chrome-plated finish are included design features for outdoor exposure.

Technical specifications

12 specifications

Identity
Brand	CURT
Model	23501
Product type	Trailer Hitch Lock

Fit and use
Pin diameter	1/2-inch
Receiver size	1-1/4-inch
Compatible vehicle types	ATV, Marine-Personal-Craft, Trailer
Lock activation	1/4-turn

Materials and protection
Material listed	Carbon Steel
Finish	Chrome
Dust cap	Watertight dust cap

Included and support
Keys included	Two keys
Manufacturer warranty description	Limited Lifetime

What to know before buying

Listing details to confirm

Customer feedback reports mixed fit, including reports that the lock does not fit some CURT 1-1/4-inch hitches and may be too long. Confirm pin-hole alignment and clearance with your specific receiver and mount before buying. The listing's fit claim does not establish compatibility with every receiver.

What’s in the box

Hitch lockIncluded
Two keysCheck selected pack
Watertight dust capCheck selected pack

Check which accessories are included in your selected pack before buying.

Who is it for?

A good fit for

Owners of a compatible 1-1/4-inch receiver with a 1/2-inch hitch-pin hole.
Trailer, ATV or personal-watercraft users who want a keyed pin to deter removal of a ball mount or hitch accessory.
Buyers who want a spare key and a dust cap for the lock mechanism.

Less suited to

Anyone needing a lock for a receiver size or pin-hole diameter other than the stated fit.
Buyers who need confirmed compatibility with a specific CURT receiver or mount without first checking dimensions.

CURT 23501 Trailer Hitch Lock, 1/2-Inch Pin for 1-1/4-Inch Receivers · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.3 / 5 · 274 ratings

5 stars68%68%
4 stars14%14%
3 stars9%9%
2 stars3%3%
1 star6%6%

Customer feedback describes the lock as high quality and sturdy, but reports mixed experiences with fit, including claims that it does not fit some CURT 1-1/4-inch hitches and is too long. That concern matters because the listing's nominal fit depends on a 1/2-inch hole and suitable clearance. Aggregate ratings lean positive overall, but do not resolve compatibility for a particular receiver.

Positive themes

Customers describe the lock as high quality and sturdy.

Negative themes

Some customers report fit problems with CURT 1-1/4-inch hitches and say the lock is too long.

Mixed feedback

Feedback about fit is mixed.

Frequently asked questions

What receiver does the CURT 23501 fit?

The listing specifies a 1-1/4-inch receiver with a 1/2-inch hole. Customer feedback reports fit problems with some CURT 1-1/4-inch hitches, so confirm dimensions and clearance for your exact setup.

How does the lock operate?

It uses a key-operated quarter-turn activation for locking and unlocking.

What is included?

The listing states that two keys and a watertight dust cap are included. The package contents field names the hitch lock.

Does this lock secure the trailer coupler?

It is described as a receiver hitch lock that holds a ball mount or hitch-mounted accessory in place. The listing distinguishes this receiver-side function from a coupler lock.