CURT 23518 Black Barbell Hitch Lock – 5/8" Pin | Fits 2" Receiver | Anti-Theft Trailer Hitch Lock
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Lock Your Hitch. Protect Your Trailer.
The CURT 23518 barbell hitch lock secures your ball mount inside your receiver hitch, preventing thieves from removing your hitch or towing away your trailer.
Designed for 2" receiver hitches, this lock features a 5/8" diameter hardened steel pin and a barbell-style locking mechanism that offers a clean, low-profile design while maximizing security.
This is one of the most commonly used hitch locks in the industry, trusted by trailer owners, contractors, and fleet operators.
🔒 Key Features
- ✅ Fits 2" Receiver Hitches (Class III, IV, V)
Standard fit for most trucks, SUVs, and vans - ✅ 5/8" Diameter Solid Steel Pin
Strong, secure hold for ball mounts and accessories - ✅ Barbell-Style Lock Design
Low-profile, harder to tamper with - ✅ 1/4-Turn Key Operation
Fast, simple locking and unlocking - ✅ Watertight Dust Cap
Protects internal lock cylinder from corrosion - ✅ Durable Black Powder Coat Finish
Corrosion-resistant for long-term outdoor use
📐 Specifications
- Brand: CURT
- Model: 23518
- Application: Hitch / receiver lock (NOT coupler lock)
- Receiver Size: 2" x 2"
- Pin Diameter: 5/8"
- Usable Pin Length: 2.85"
- Material: Carbon steel
- Finish: Black powder coat
- Lock Type: Keyed (1/4-turn)
- Includes: (2) keys
- Weight: ~1 lb
⚠️ Important Fitment Note
- ❌ double-wall receiver tubes
- ✔ Designed for standard single-wall 2" receivers
🚛 Applications & Fitment
- Ball mounts
- Hitch-mounted accessories
- Cargo carriers
- Bike racks
- Utility trailer towing setups
🚚 Why This Lock?
Most trailers get stolen at the hitch—not the coupler.
👉 This lock:
- Prevents removal of your ball mount
- Stops quick theft attempts
- Works best when paired with a coupler lock (full system security)
📦 What's Included
- (1) CURT 23518 Hitch Lock
- (2) Keys
📞 Call/Text: 517-225-1991 🌐 AAATrailer.com
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- Address: 4675 East Grand River Ave, Howell, MI 48843
- Phone: (517) 225-1991 (Call or text)
- Hours: Monday to Friday: 10:00 AM - 5:30 PM | Saturday: By appointment
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