Protecting a fifth-wheel setup requires a robust locking solution that deters tampering and fits various hitch configurations. This article reviews top king pin locks designed for 5th wheels, RVs, semi-trailers, and campers. We compare build quality, ease of use, and anti-theft features to help you choose the right model for road safety and peace of mind.
| Product | Brand | Key Features |
|---|---|---|
| BOYISEN 5th Wheel King Pin Lock Solid Steel Anti Theft… with Handles | BOYISEN | Handle, blossom lock, 3 keys, heavy duty solid steel |
| BOYISEN 5th Wheel King Pin Lock Solid Steel Anti Theft with Handles… 3 Keys Black | BOYISEN | Handle, blossom lock, 3 keys, heavy duty |
| Trimax TFW80HD 5th Wheel King Pin Lock | Trimax | Full collar design, weatherproof, push button |
| METOWARE 5th Wheel King Pin Lock with Warning Tag | METOWARE | Warning tag, two keys, high-strength material |
| Curt 23255 Dumbbell Style King Pin Lock | Curt | High-strength steel pin, easy operation |
BOYISEN 5th Wheel King Pin Lock With Handle
The BOYISEN king pin lock features a convenient handle and an outward-turning cylinder for easier locking and unlocking under the trailer. It uses a blossom-style key system to reduce the chance of duplicate keys. Supplied with three keys, this heavy-duty lock is built from solid steel for weather resistance and durability against tampering. The design targets deterrence, with robust construction intended to resist drill attempts and long-term wear.
Key considerations
- Solid steel construction enhances durability.
- Outward-turn cylinder improves ease of use in tight spaces.
- Three keys provide backup access and security for crews.
BOYISEN 5th Wheel King Pin Lock With Handles Black
This variation emphasizes a handle-equipped design and a blossom locking system, ensuring secure engagement and convenient operation when hitching/unhitching. It is made from solid steel for weather resistance and long service life. The included three keys serve as backups, making it suitable for fleet managers or multiple-vehicle setups.
Key considerations
- Keyed unique design helps prevent cross-keys with other locks.
- Solid steel construction offers enhanced vandal resistance.
- Three keys support distributed access control.
Trimax TFW80HD 5th Wheel King Pin Lock
Trimax TFW80HD emphasizes rugged construction with a full collar design that reduces grease transfer and adds structural reinforcement. The lock employs an easy-to-use push-button mechanism for quick securing. It is treated to withstand weather exposure, ensuring long-term reliability and resistance to rust and corrosion.
Key considerations
- Full collar design adds security and reduces maintenance mess.
- Push-button operation supports rapid locking in field conditions.
- Weatherproof coating extends lifespan in harsh environments.
METOWARE 5th Wheel King Pin Lock
METOWARE’s model focuses on conspicuous deterrence with a warning tag and a bright chain. It uses high-strength iron with weather-resistant finishes to protect against corrosion and tampering. The lock is simple to install and includes two keys for redundancy, enabling quick response during daily operations or fleet management.
Key considerations
- Warning tag and bright finish serve as a theft determent.
- Two keys support efficient asset management for fleets.
- High-strength materials provide reliable protection in transit.
Curt 23255 Dumbbell Style King Pin Lock
Curt’s dumbbell-style lock provides a straightforward, dependable security option. A high-strength steel pin paired with an aluminum bracket offers solid protection while remaining relatively easy to operate. Its 2-inch king pin compatibility makes it a versatile choice for many fifth-wheel setups.
Key considerations
- High-strength steel pin for robust security.
- Aluminum bracket reduces weight without sacrificing strength.
- Designed for broad compatibility with 2-inch pins.
Buying Guide: Key Purchase Considerations
Choosing the right king pin lock involves balancing security, ease of use, and maintenance needs. Consider the following factors to ensure you select a model that fits your trailer and daily routine.
- Material and build quality: Solid steel or hardened alloys provide greater resistance to cutting and drilling. Look for weatherproof coatings to extend life in outdoor environments.
- Locking mechanism: Push-button, blossom, or keyed-alike designs affect how quickly you can secure or unlock. Choose based on your workflow and whether multiple locks should share a key.
- Full collar vs. partial: Full collar designs add an extra layer of protection by enclosing the pin. They may be preferable for high-theft areas.
- Deterrence features: Warning tags, bright finishes, and visible branding can deter thieves even before attempting entry.
- Key management: Ensure you have spare keys and consider keyed-alike options if you manage multiple locks across a fleet or facility.
- Compatibility: Verify the lock fits your king pin size (most common is 2 inches) and your trailer type to avoid fit issues.
- Installation and maintenance: Some locks are easier to install without tools, while others require periodic lubrication or checks for corrosion.
Bottom line: For highway-ready security, prioritize heavy-duty materials, a proven locking mechanism, and features that deter tampering and simplify daily use. Fleet operators should assess key management options, while solo travelers may lean toward compact, user-friendly models with reliable warranties.