If you need a reliable surge brake lockout key for UFP-style boat trailer brakes, these options deliver secure magnetic operation, simple installation, and dependable removal. This guide highlights five top picks, explaining who each is best for and why. Designed for off-road use, boat yard work, and regular storage, these keys help prevent the factory key from getting lost and ensure quick access during maintenance or parking.
| Product | Brand | Why It Stands Out |
|---|---|---|
| C CLINK Surge Brake Lockout Key W/Magnetic | C CLINK | Magnetic lock, easy installation, durable webbing |
| C CLINK 2 PCS Lock Out Key W/Magnetic | C CLINK | Two keys for redundancy, strong magnetic design |
| FUYEAR Magnetic Trailer Surge Brake Lockout Key | FUYEAR | Wide compatibility, simple one-person installation |
| Relaxweex 4 Pcs Orange Surge Brake Lockout Key | Relaxweex | Generous quantity, durable, UV-resistant webbing |
| Hicarer 4 Pcs Trailer Brake Lockout Key Set | Hicarer | Combo of manual and magnetic keys, SAE-sized |
Buyer intent note: The best pick overall tends to be the magnetic lockout keys with durable webbing and easy removal, while the multi-pack sets are ideal for fleet owners or anyone wanting backups. If you need broad compatibility and straightforward installation, the FUYEAR and Relaxweex options provide clear advantages. The Hicarer set is great when you want both manual and magnetic solutions in one kit.
Product Overviews
C CLINK Surge Brake Lockout Key W/Magnetic
Brand: C CLINK. Features include a magnetic lock and a larger surface area for strong magnetic force. It is a replacement for silver factory key 34557 and fits A60 and A70 actuators. Easy to install, stable, and removable. The webbing is UV-resistant and riveted for durability, suitable for off-road use and boat yard tasks. Best for single-vehicle owners who want a reliable lockout key with a simple, one-person setup. Caution: designed for off-road and boat yard use only, avoid prolonged exposure to conditions that might degrade webbing if not properly maintained.
C CLINK 2 PCS Lock Out Key W/Magnetic
Brand: C CLINK. Composition mirrors the single-key version with two keys per package for redundancy. Includes a magnetic lock, larger magnetic surface, durable webbing with UV resistance, and stainless steel rivets. Best for boat trailers with multiple actuators or for users who want a spare key handy. Choose this if you want immediate backups and a quick, single-person installation. Limitation: two-key set may be more than some buyers need for a single trailer.
FUYEAR Magnetic Trailer Surge Brake Lockout Key
Brand: FUYEAR. This is a wide-compatibility option for A-60, A-70, A-75, and A-84 actuators, designed as a direct replacement for the factory silver key 34557. Installation is straightforward with an upgraded magnetic lock that eliminates tape or clamps. Built with UV-resistant webbing and heavy-duty steel, it offers durability for outdoor use. Best for owners who want a robust, one-person install with clear compatibility. Limitation: relies on magnetic lock design which may require careful handling to avoid misplacement.
Relaxweex 4 Pcs Orange Surge Brake Lockout Key
Brand: Relaxweex. This set includes four keys, designed for UFP A-60, A-70, A-75, and A-84 trailers. Magnetic lock design supports simple installation and removal. The two-inch keys are lightweight, compact, and made with UV-resistant webbing. Best for trailer fleets or households needing multiple spares. Choose this if you want backups and a bit of redundancy for various stored trailers. Caution: ensure you select the correct model compatibility for your specific actuator.
UASAM Surge Brake Lockout Key Magnetic
Brand: UASAM. Features a magnetic lock with a laser-cut process and bright orange powder coat. Intended for off-road use and boat yard use, compatible with A-60, A-70, A-75, and A-84 actuators, and replaces the factory silver key 34557. Easy to install on the trailer without tape or clamps. Best for users prioritizing a durable steel construction and a clearly marked, easy-to-find lockout key. Limitation: product labeling notes off-road/boat yard use only, which may affect insurance or warranty language in some regions.
Relaxweex 2 Pcs Orange Surge Brake Lockout Key
Brand: Relaxweex. This smaller set provides two keys for UFP A-60, A-70, A-75, and A-84 trailers with magnetic functionality. The keys are two inches in length, lightweight for easy handling, and feature UV-resistant webbing. Best for individuals who want a compact backup set or who store multiple trailers. Limitation: fewer keys than the four-piece kit, so plan accordingly for backup needs.
Buying Guide
What should I consider when choosing a surge brake lockout key?
Compatibility with your trailer’s A-60, A-70, A-75, or A-84 actuator is essential. Look for direct replacement for the factory key 34557 and magnetic lock features for easy install/removal. Durable webbing with UV resistance helps withstand sun and rain exposure.
Magnetic vs manual keys
Magnetic lockout keys offer quick, tool-free installation and removal, making them ideal for frequent use. Manual keys may be more durable in severe environments, but require more effort during installation with tape or clamps if not magnetic.
How many keys do I need?
For a single trailer, a 2-piece set may be sufficient, while multi-vehicle households or fleets benefit from 4-piece sets to ensure backups. Consider spare keys for storage locations and maintenance schedules.
Durability and weather resistance
Choose UV-resistant webbing and corrosion-resistant steel parts. A bright orange color helps visibility in dim conditions, aiding quick access during roadside stops or yard work.
Installation ease and safety
Magnetic designs typically require no adhesives or clamps, reducing installation time and potential damage to components. Ensure webbing rivets are secure and inspect the lockout key periodically for wear.
FAQ
What is a surge brake lockout key used for?
A surge brake lockout key is used to disable or “lock out” the trailer’s surge brake actuators for maintenance, parking, or storage, preventing unintended braking while the trailer is disconnected or being serviced.
Are magnetic lockout keys compatible with all UFP actuators?
Most magnetic lockout keys are designed for A-60, A-70, A-75, and A-84 actuators, replacing the factory key 34557. Always verify model compatibility before purchase.
Can I use the lockout key for storage or off-road use?
Yes. These keys are designed for off-road use and boat yard tasks, with UV-resistant webbing and corrosion-resistant materials to withstand outdoor conditions.
Is it better to buy a multi-pack or a single-pack?
Multi-packs are preferable for households with multiple trailers or fleets, providing backups and ready replacements. Single packs are sufficient for a single trailer and occasional use.
What maintenance is recommended?
Inspect webbing, rivets, and the magnetic lock for wear. Ensure keys are kept dry when stored and replace any damaged components promptly to maintain reliability.