5 5th Wheel for Semi Reviews: Find the Right Pick

Keeping your semi and trailer secure and well-maintained is crucial for every haul. Whether you need to prevent theft or make uncoupling easier, the right accessories make all the difference.

This guide reviews five essential products for your 5th wheel setup, from heavy-duty locks to lubricants and pullers. You’ll find honest insights to help you choose what fits your needs best.

RVMATE 5th Wheel Lock – Heavy Duty Security

The RVMATE 5th Wheel Lock is built from heavy-duty steel with a welded construction and electrostatic coating for durability. Its bright yellow warning tag serves as a strong visual deterrent, reminding you to remove it before hitching. With an internal diameter of 74mm, it fits standard 50mm king pins universally, so you can trust it on most trailers.

This lock prevents thieves from connecting to your kingpin, giving you peace of mind during stops. The design is straightforward to install and remove, though you’ll need to keep the keys handy. If you prioritize a robust, no-fuss security solution with a clear warning, this is a solid choice for your rig.

View all product features

• [Keep Your 5th Wheel Secure] : King pin lock can prevent thieves from connecting your fifth wheel kingpin and avoid unauthorized movement. The durable construction, eye-catching yellow lock and tag serve as a warning and deterrent against theft to keep your 5th wheel secure.
• [Dimension]: The dimension of the trailer king pin lock is 83 mm in height, with an internal diameter of 74mm, a universal fit for 50 mm diameter trailer pins. Thus, the lock can be widely applied in semi trailers, 5th wheels, trucks, boats, containers and many other scenarios.
• [High Quality Material]: Trailer king pin is made of heavy duty steel copper, processed with welding construction. The surface adopts electrostatic treatment, featuring the body with weather resistance and anti-rust, making it sturdy enough and hard to break even by experienced thieves. Therefore effectively increase the safety factor and reduce the probability of theft when installed onto trailer.
• [Warning Tag]: The main tone of bright yellow designed as a sign of strong visible warning. The chain with fluorescent warning tag hanging down passes on message to someone to try and steal : Caution! King pin lock installed! If a would-be thief sees the lock, they'll likely move on to an easier target.
• [Easy to Use]: The trailer hitch lock is rather easy to use. You just need to engage the lock onto the trailer hitch, then insert the key into lock cylinder and rotate 180 degrees, the king pin lock firmly installed. (Attention: Every lock has its own keys. Different locks don't share the keys.)

---

BOYISEN King Pin Lock – Convenient Handle Design

The BOYISEN King Pin Lock stands out with its integrated handle and outward-turning cylinder, making locking and unlocking more convenient than downward designs. It’s made from solid steel rather than casting, offering superior weather resistance and break-in protection. The lock uses a unique blossom lock system, and each unit comes with three keys—plus a key ID printed on the key for easy replacement if lost.

This lock is ideal if you value ease of use without sacrificing security. The handle gives you a better grip, especially in tight spaces or cold weather. While the solid steel adds weight, it’s a trade-off for the added strength. For a user-friendly anti-theft solution that’s hard to break, this is a top contender.

View all product features

• More Convenient with Handle, Compared with other kingpin lock, BOYISEN trailer kingpin Lock add handle and turn cylinder outward instead of downward, more convenient while lock or unlock for 5th wheel
• Keyed Unique, no worry about another BOYISEN kingpin lock owner will have the same key. BOYISEN anti theft trailer lock using blossom lock, not easy to break; Come with 3 keys for your lock, so you can keep one as backup
• Heavy Duty Construction: This 5th wheel hitch lock is made of solid steel instead of casting steel, strong enough for weather resistant, hard to break. The heavy duty steel will add more difficulties for steal drills, and lasts for years
• Key Lost? No Worrying! In 2025 batches locks, there's a key ID printed on the key, please note it down or take a photo of it, provide us with the key ID to copy the key if your keys are lost
• High Visibility: This Kingpin lock is designed with a warning tag, so you could notice if it is still stay in place, and remind you of removing it when you want to hitching
• Universal Fit: ideal for trucking companies, RV dealers or fleet drivers, used for RVs, Boats and Campers Semi-Truck

---

METOWARE 5th Wheel Lock – Bright Warning Labels

The METOWARE 5th Wheel Lock features a 12-inch chain with a bright red warning label tag that reminds you to remove it before hitching. Made from high-strength iron with a double-layer electrostatic coating, it’s built for weather resistance and durability. The precision design encloses the kingpin fully to prevent drilling attacks, and it comes with two keys for convenience.

This lock is easy to install in seconds, making it a practical choice for quick security. The warning tag is especially helpful if you often park in busy areas or forget to check. While the iron construction is sturdy, it may not be as tough as steel against extreme force. For a well-priced lock with a clear visual reminder, this is a smart option.

View all product features

• EYE-CATCHING WARNING LABELS:This 5th wheel King Pin lock comes with a 12-inch chain and bright red warning label tag attachment that will remind you to remove it before hitching. Each warning label has a warning message in English to keep you safe.
• HIGH STRENGTH MATERIAL:This king pin lock is made of high-strength iron for durability, weather resistance and resistance to damage. This lock is coated with a double layer of electrophoretic paint to prevent corrosion and rust for a more reliable performance, it is perfect for protecting your trailer on the road or hauling.
• UNIQUE DESIGN:The Kingpin lock is easy to lock and unlock, takes seconds to install and comes with two keys so you don't have to worry about losing them.
• PRECISION ANTI-THEFT DESIGN:This fifth wheel king pin lock can well enclose the main pin lock to effectively prevent drills, saws and other damaging tools. The heavy-duty precision mechanism protects your trailer perfectly so you don't have to worry about it.
• UNIVERSALITY:The 5th wheel king pin lock is the best choice for RVs, boats, and camping semi-trailers, the petite size can be applied to a wide range of vehicles, adding convenience to your journey.

---

Lucas 5th Wheel Lube – Long-Lasting Protection

Lucas 5th Wheel Lube is a specialized grease that lasts twice as long as standard grease, reducing how often you need to reapply. It’s virtually waterproof, so it won’t wash away in rain or during pressure washing, keeping your 5th wheel plate lubricated in all conditions. This lube also eliminates the greasy mess that often transfers to chassis and air hoses, saving you cleanup time.

Using this lube helps prevent wear on your 5th wheel components, extending their lifespan. It’s easy to apply and stays put even under heavy loads. If you’re tired of frequent greasing or dealing with sticky residue, this product offers a cleaner, longer-lasting solution. For a reliable lubricant that performs in wet weather, it’s a solid investment.

View all product features

• Lasts twice as long as grease
• Virtually waterproof
• Eliminate greasy mess on chassis and air hoses

---

scottchen PRO Pin Puller – Heavy Duty Release

The scottchen PRO 5th Wheel Pin Puller is a 31-inch solid steel tool with chrome plating for wear resistance and reduced friction. It’s designed to release the 5th wheel lock quickly when uncoupling, keeping your hands clean and avoiding oily residue. The puller splits into two sections for easy storage in your cab or toolbox, making it portable and convenient.

Beyond its primary function, this tool can also hook and haul stacked materials or push hard-to-reach parts like cargo in truck beds. The chrome finish is sturdy and easy to clean, adding to its longevity. If you need a reliable pin puller that doubles as a multi-purpose hook, this is a versatile addition to your gear. It’s especially handy for frequent uncoupling.

View all product features

• 【Major Function】The 5th Wheel Pin Puller is designed to release the 5th wheel lock easily and quickly when uncoupling the truck and the semi-trailer. Avoiding oily residue on your arms or clothes can also reduce strain on your lower back.
• 【Widely Use】This heavy duty pin puller can also be used to hook and haul stacked materials or push/pull hard-to-reach parts, such as cargo in the back of a truck, water tanks, or manhole covers.
• 【Special Design】This pin puller is divided into 2 sections for easy store in your cab or tool box. Portable size easier to carry around.
• 【Material】Features chrome finish on steel offering exceptional wear resistance and reducing friction, is quite sturdy and super easy to keep clean.
• 【Solid Steel Handle】The solid steel handle can be used as a hammer to tap the tires to check tire pressure.
• 【Dimension】Puller rod dia x L: 3/8" x 31". Handle dia x L: 3/4" x 4-1/4". Package: 1pack

---

Buyer’s Guide: What to Consider

Choosing the right 5th wheel accessory depends on your specific needs. Here are key factors to consider before making a purchase.

• Security Level: Consider how much theft risk you face. Heavy-duty steel locks offer more protection, while iron ones are lighter but less robust.
• Ease of Use: Look for features like handles or warning tags that make locking and removal simpler, especially in tight spaces or bad weather.
• Durability: Check materials and coatings. Solid steel or chrome plating resist rust and wear better than basic iron, lasting longer on the road.
• Lubrication Needs: If you haul often, a long-lasting, waterproof lube reduces maintenance. Consider how it performs in your typical climate.
• Storage and Portability: Tools like pin pullers should be easy to store. Two-section designs fit in toolboxes, while compact locks are easier to carry.

Conclusion

Selecting the best 5th wheel for semi accessories comes down to your priorities. For security, the RVMATE and BOYISEN locks offer solid protection, while the METOWARE adds a helpful warning tag. Lucas Lube keeps your hitch running smoothly, and the scottchen PRO puller makes uncoupling a breeze.

Think about your daily routine and choose what fits best. Whether you need theft prevention, easier maintenance, or cleaner operation, these products deliver reliable performance on the road.