When your trailer’s brakes start to feel sluggish or unresponsive, the culprit is often a worn-out brake magnet. These small but critical components press against the brake drum to create the friction that slows your rig. Replacing them promptly keeps your towing safe and your peace of mind intact.
This guide reviews the best trailer brake magnets on the market, covering various sizes, weight ratings, and essential accessories like retainer clips. Whether you need a simple replacement or a complete kit, you’ll find the right option here.
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RALZAOTO 12" Electric Trailer Brake Magnet Kit Fits 5,200-7,000 lbs Axles f…
Best for12-inch brake replacement
- Complete kit with springs
- Fits major brands
ConsiderNo installation instructions
RALZAOTO 10" Electric Trailer Brake Magnet Kit Fits 3500 lbs Axles for 10" …
Best for10-inch brake replacement
- Fits 3,500 lb axles
- Complete kit
ConsiderLimited to 10-inch brakes
Riyhch 12-1/4"x3-3/8 Electric Trailer Brake Magnet Kit, Set of 2, for 9-10K
Best for9-10K heavy axles
- Fits 9-10K axles
- Corrosion-resistant
ConsiderNo springs or clips
12-1/4" Electric Trailer Brake Magnet Kit Fits 10,000 lbs Axles
Best for9-10K brake kits
- Fits 9-10K axles
- Complete with springs
ConsiderMay not fit all 12-1/4" brakes
Houoto BP19-001 Magnet Retainer Clip for Most 10 Inch and 12 Inch Electric …
Best forSecuring oval magnets
- Set of four clips
- Fits 10 and 12 inch
ConsiderOnly clips, no magnets
CuraceQ 8PCS BP19-001 Magnet Retainer Clip for Most 10 Inch and 12 Inch Ele…
Best forDexter axle clips
- 8 clips in pack
- Fits Dexter and Redline
ConsiderNo magnets included
JADODE 12" Electric Trailer Brake Magnet Kit for 2" x 12" Electric Brakes A…
Best for7,000 lb axle brakes
- Complete kit
- Fits 7K axles
ConsiderNo installation guide
BP19-005 12.25" Electric Trailer Brake Magnets Retainer Clip for Dexter
Best for12.25 inch brake clips
- Set of four
- Fits 12.25" magnets
ConsiderOnly for 12.25" brakes
C CLINK Surge Brake Lockout Key W/Magnetic Lock Out Key FITS for UFP Type S…
Best forBoat trailer brake lockout
- Magnetic lockout key
- Fits UFP and Dexter
ConsiderOnly for surge brakes
2 Pack of 8,000 lb, 10,000 lb, 12,000 lb, and 15,000 lb Axle Trailer Brake …
Best forMultiple axle weights
- Two complete kits
- Fits 7.2K to 15K axles
ConsiderMay not fit all 12-1/4" brakes
RALZAOTO 12" Electric Trailer Brake Magnet Kit – Durable and Complete
Brand: RALZAOTO
A reliable, complete kit for 12-inch brakes on 5,200-7,000 lb axles.
The RALZAOTO 12″ kit is designed for trailers with 5,200 to 7,000 lb axles, fitting 12″ x 2″ electric brake assemblies. It replaces popular brands like Dexter, Rockwell, Al-Ko, and Lippert, making it a versatile choice for many trailers. The package includes two magnets with wires, two coil springs, and two retainer clips, so you have everything needed for a straightforward replacement.
Constructed from premium materials, these magnets offer excellent toughness and wear resistance. They respond quickly to your brake controller, ensuring reliable stopping power even under heavy use. If your trailer brakes aren’t engaging promptly, this kit provides a practical and efficient solution.
- Complete kit with springs
- Fits major brands
- Durable construction
- No installation instructions
- May require specific tools
RALZAOTO 10" Electric Trailer Brake Magnet Kit – Compact and Efficient
This RALZAOTO kit is tailored for trailers with 3,500 lb axles, fitting 10″ x 2-1/4″ electric brake assemblies. It’s compatible with Dexter, Axletech, Al-Ko, and Lippert, offering broad applicability. The package includes two magnets with wires, two coil springs, and two retainer clips, making it a convenient all-in-one purchase.
The magnets are built from premium materials that resist wear and tear, ensuring long-lasting performance. They respond promptly to brake inputs, which is crucial for smaller trailers that need reliable stopping power. If your 10-inch brakes are showing signs of age, this kit is a smart investment.
- Fits 3,500 lb axles
- Complete kit
- High-quality materials
- Limited to 10-inch brakes
- No warranty mentioned
Riyhch 12-1/4"x3-3/8 Electric Trailer Brake Magnet Kit – Heavy-Duty Option
Brand: Riyhch
A durable magnet set for heavy-duty trailers needing 12-1/4" brakes.
The Riyhch magnet kit is designed for 9K-10K trailer axles, fitting 12-1/4″ x 3-3/8″ electric brakes. It serves as a replacement for part numbers 21026 and K71-376-00, making it a direct fit for many heavy-duty trailers. The set includes two magnets, ensuring you can replace both sides of an axle.
Constructed with corrosion-resistant materials, these magnets maintain their performance and appearance over time. They are built to withstand the demands of heavy loads, providing consistent braking. Note the warning to keep children away from this product, as with all brake components.
- Fits 9-10K axles
- Corrosion-resistant
- Direct replacement
- No springs or clips
- Warning about children
RALZAOTO 12-1/4" Electric Trailer Brake Magnet Kit – High Capacity
This RALZAOTO kit is engineered for trailers with 9,000 to 10,000 lb axles, fitting 12-1/4″ x 3-3/8″ or 12-1/4″ x 4″ electric brakes. It replaces Dexter, Rockwell, and other major brands, offering broad compatibility. The package includes two magnets with wires, two coil springs, and two retainer clips, so you have all necessary components.
Made from premium materials, these magnets provide excellent toughness and wear resistance, ensuring reliable braking over time. They respond quickly to your brake controller, which is vital for heavy loads. If you need to replace worn magnets on a high-capacity trailer, this kit is a dependable option.
- Fits 9-10K axles
- Complete with springs
- High durability
- May not fit all 12-1/4" brakes
- No instructions
Houoto BP19-001 Magnet Retainer Clip – Secure Fit for 10 and 12 Inch
Brand: Houoto
Essential clips for keeping oval brake magnets securely attached.
The Houoto BP19-001 retainer clips are designed to secure oval-style brake magnets on most 10-inch and 12-inch electric trailer brakes. The package includes four clips, enough for four brake assemblies, making it a practical spare part set. These clips ensure your magnets stay firmly in place during braking.
Made from high-quality metal, these clips offer strength and resistance to deformation. They prevent magnets from shifting or dropping, which stabilizes braking performance. If you’re replacing magnets, having spare retainer clips is a wise precaution.
- Set of four clips
- Fits 10 and 12 inch
- Strong metal build
- Only clips, no magnets
- Specific to oval style
CuraceQ 8PCS BP19-001 Magnet Retainer Clip – Value Pack for Dexter
The CuraceQ retainer clips come in an 8-piece pack, perfect for those who need multiple spares or work on several trailers. They are compatible with most 10-inch and 12-inch oval-style brake magnets, including Dexter and Redline axles. This pack ensures you have enough clips for multiple brake assemblies.
Crafted from high-quality metals, these clips resist deformation and rust, maintaining their integrity over time. They firmly fix the brake magnet, preventing shifting or dropping, which improves braking stability. For a cost-effective solution, this value pack is hard to beat.
- 8 clips in pack
- Fits Dexter and Redline
- Rust-resistant metal
- No magnets included
- Only for oval magnets
JADODE 12" Electric Trailer Brake Magnet Kit – Fits 7,000 lb Axles
The JADODE 12″ magnet kit is designed for 2″ x 12″ electric brake assemblies, fitting most 7,000 lb axles. It includes two magnets with wires, two coil springs, and two retainer clips, providing a complete replacement set. It’s compatible with Dexter, Axletech, Al-Ko, and Lippert, among others.
One helpful tip from JADODE: check the magnets for holes on the north, south, east, and west points of their face. The presence or absence of these holes indicates whether they need replacement. This kit offers a straightforward way to restore your braking system.
- Complete kit
- Fits 7K axles
- Helpful replacement tip
- No installation guide
- May not fit all 12" brakes
Houoto BP19-005 12.25" Electric Trailer Brake Magnets Retainer Clip – Precision Fit
Brand: Houoto
Precise clips for 12.25-inch brake magnets, ideal for Dexter axles.
The Houoto BP19-005 retainer clips are specifically designed for 12.25″ electric trailer brake magnets, commonly used on Dexter axles. The package includes four clips, enough for four brake assemblies. These clips ensure your magnets stay in place, providing consistent braking performance.
Made from high-quality metal, these clips offer strength and durability, resisting deformation and rust. They are easy to install and provide a secure fit. If you’re replacing magnets on a 12.25″ brake system, these clips are a necessary accessory.
- Set of four
- Fits 12.25" magnets
- Durable metal
- Only for 12.25" brakes
- No magnets included
C CLINK Surge Brake Lockout Key – Magnetic Convenience for Boat Trailers
Brand: C CLINK
A convenient magnetic key for UFP surge brakes on boat trailers.
The C CLINK surge brake lockout key is a magnetic replacement for the factory key on UFP-type surge brakes, fitting A-60, A-70, A-75, and A-84 actuators, as well as Dexter models. It eliminates the need for tape, rubber bands, or C-clamps to keep the brake locked out. The magnetic ring provides a strong hold, making installation and removal easy.
The key comes with a webbing strap secured by stainless steel rivets, made from UV-resistant materials to withstand sun exposure. Its nano-coated shell resists scratches and maintains a clean appearance. This is a handy accessory for boat trailer owners who frequently need to disengage the surge brake for reversing.
- Magnetic lockout key
- Fits UFP and Dexter
- UV-resistant webbing
- Only for surge brakes
- May not fit all actuators
Trailer Parts Experts 2 Pack Brake Magnet Kit – Versatile for Multiple Axles
Brand: Trailer Parts Experts
A versatile 2-pack suitable for a wide range of trailer axle weights.
This 2-pack from Trailer Parts Experts includes brake magnet kits for 12-1/4″ x 3-3/8″ to 5″ brakes, suitable for 7.2K (Dexter), 8K, 10K, 12K, and 15K axles. Each kit includes a magnet, spring, and clip, providing everything needed for a replacement. The versatility makes it a great option for trailers with varying weight capacities.
With two complete kits, you can replace magnets on both sides of an axle or have a spare on hand. The included components are designed to work seamlessly with your existing brake assembly. This is a practical choice for those who want a reliable, all-in-one solution.
- Two complete kits
- Fits 7.2K to 15K axles
- Includes spring and clip
- May not fit all 12-1/4" brakes
- No instructions
Buyer’s Guide: What to Consider
Choosing the right trailer brake magnet involves considering your brake size, axle weight, and the components included in the kit. This guide covers key factors to help you make an informed decision.
- Brake Size Compatibility: Measure your brake drum diameter and width. Common sizes are 10" x 2-1/4", 12" x 2", and 12-1/4" x 3-3/8". Ensure the magnet kit matches your brake assembly dimensions to guarantee a proper fit.
- Axle Weight Rating: Match the magnet kit to your trailer's axle weight rating. Kits are designed for specific ranges, such as 3,500 lbs, 7,000 lbs, or 9,000-10,000 lbs. Using the correct rating ensures optimal braking performance and safety.
- Replacement Parts Included: Some kits include only magnets, while others come with coil springs and retainer clips. Having these additional parts simplifies the replacement process and ensures you have everything needed for a complete installation.
- Brand Compatibility: Many magnets are designed to replace original equipment from Dexter, Al-Ko, Lippert, and other major brands. Check the product description for compatibility to avoid fitment issues with your existing brake assembly.
- Quality and Durability: Look for magnets made from premium materials that resist wear, corrosion, and rust. High-quality construction ensures long-lasting performance, especially for trailers used in demanding conditions or heavy-duty applications.
Conclusion
Selecting the right trailer brake magnet is crucial for safe towing. Whether you need a complete kit for your 12-inch brakes or just replacement retainer clips, the options above cover a range of needs and budgets. Always verify compatibility with your brake assembly and axle rating.
For most trailers, the RALZAOTO kits offer excellent value with complete packages, while the Trailer Parts Experts 2-pack provides versatility for various axle weights. Don’t overlook the importance of retainer clips to keep your magnets secure. Choose the product that best fits your trailer’s specifications.
Erica Steven is the founder and lead writer of WorstBrands, a site dedicated to providing honest and trustworthy reviews about outdoor gear and fashion products.
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