Best Axle Mounting U-Bolt Kits

1. SPARKWHIZ Trailer U Bolt Kit, 5-1/2 inch U Bolt for 3,500 lb Trailer Axle, 2-3/8″ Round Axle, 1/2” Diameter, 2″ Thread Pitch

The SPARKWHIZ Trailer U Bolt Kit is a must-have for your trailer. It’s designed for a 3,500-pound round axle with a 2-3/8″ diameter.

This kit includes four 5-1/2″ U bolts, eight hex nuts, and two tie plates. The durable steel resists rust and corrosion. It’s built to last and perform well.

Installation is quick and easy. The kit enhances your braking system. It’s a reliable choice for your trailer needs.

2. Square U-Bolt Kit for Boat Trailer Mounting Axle Leaf Springs Zinc(4 U-Bolt + 2 Plate), Heavy Duty Square U-Bolts with Nuts and Frame Plate for Trailer Automobiles Trailer, 2″ W x 5″ L

This Square U-Bolt Kit is perfect for boat trailer mounting. It fits 2″ x 2″ axles and supports over 150 lbs per bolt. The adjustable U-bolts meet your specific needs.

Made of high-quality steel, these U-bolts resist rust and corrosion. They work well in salt or fresh water, making them ideal for boat trailers.

The kit includes 4 U-bolts, 2 plates, nuts, and washers. It’s easy to use and works for boats, trailers, and more.

3. A.A U Bolt Mounting & Plate Kit for 2,200 lb Trailer Axle with 1-3/4″ Round Tube Diameter, Galvanized Zinc – Single Axle

This U-Bolt Mounting & Plate Kit is perfect for 2,200 lb trailer axles with a 1-3/4″ round tube diameter. It’s galvanized zinc-coated to prevent rust and corrosion, ensuring long-lasting durability.

The heavy-duty steel parts are built to last. The U-bolts and tie plates fit securely for safe towing. Each piece is designed for strength and reliability.

The kit includes everything you need: 4 U-bolts, 2 tie plates, 2 spring seats, and 8 nylon lock nuts. It’s easy to install and ready to use right out of the box.

4. 2 Pack U-Bolt Mounting Kit for 3,500 lb Trailer Axle (for 2-3/8” Round Tube Diameter)

This 2-pack U-bolt mounting kit is built tough for 3,500 lb trailer axles. It fits 2-3/8” round tubes perfectly. The heavy-duty design ensures safe and stable load-bearing.

The kit includes 4 U-bolts, 2 tie plates, 2 spring seats, and 8 nylon lock nuts. All parts are made from durable, corrosion-resistant materials for long-lasting use.

It works with many trailer types, offering secure axle mounting and even load distribution. This kit gives you peace of mind with reliable performance.

5. Extreme Max 3006.7098 Tandem Axle Galvanized U-Bolt Kit for Mounting Boat Trailer Leaf Springs for 2″ x 2″ Axle – 5-1/4″ Long

The Extreme Max 3006.7098 Tandem Axle Galvanized U-Bolt Kit is a complete solution for mounting boat trailer leaf springs. It’s designed for 2″ x 2″ axles and includes everything you need.

This kit features hot-dip galvanized parts that resist rust and corrosion. It ensures long-lasting reliability for your trailer setup.

U-bolts measure 5-1/4″ long, with a 1/2″ diameter and 2″ width. The kit includes 8 U-bolts, 4 backer plates, 16 lock washers, and 16 nuts.

6. SPARKWHIZ Trailer U Bolt Kit 7 inch for 5,200-7,000 lb Trailer Axle, 3″ Round Axle, 1/2” Diameter, 2″ Thread Pitch, 2 Pack

The SPARKWHIZ Trailer U Bolt Kit is a must-have for trailers with 5,200 – 7,000 lbs round axles. It fits 3-inch axle beams perfectly.

This kit includes 8 U bolts, 16 hex nuts, and 4 tie plates. All parts are made of durable steel to resist rust and corrosion.

Easy to install, boosts brake performance, and built to last. A reliable choice for your trailer needs.

7. Square U-Bolt Kit for Boat Trailer Mounting Axle Leaf Springs Zinc(4 U-Bolt + 2 Plate),Heavy Duty Square U-Bolts with Nuts and Frame Plate for Trailer Automobiles Trailer (2 1/4″ W x 6 3/10″ L)

Secure your boat trailer with this heavy-duty U-bolt kit. It fits 2″ x 2″ axles and supports over 150 lbs per bolt. Made of high-quality steel, it resists rust and corrosion.

The kit includes 4 U-bolts, 2 plates, nuts, and washers. Use it for boats, trailers, or pontoons with ease.

8. SPARKWHIZ 2000lbs Trailer U Bolt Kits for 1-3/4″ Round Trailer Axle, 4-1/4″ Long U Bolts, U Bolts Dia. 3/8″,1 Pack

The SPARKWHIZ 2000lbs Trailer U Bolt Kit is built for strength. It fits a 1-3/4″ round trailer axle perfectly. This kit handles up to 2,000 lbs with ease.

Made from rust-resistant steel, it lasts long. The 4-1/4″ U-bolts and 8 hex nuts ensure a tight, wobble-free fit.

It comes with 2 tie plates for 1-3/4″ leaf springs. Setup is quick and easy. This kit improves safety and axle alignment.

9. Square U Bolts & Tie Plate Kit for 1-1/2″ Trailer Axle, Galvanized Zinc

This Square U Bolts & Tie Plate Kit is built to last. Made from heavy-duty galvanized steel, it resists rust and corrosion, perfect for outdoor use. The zinc coating ensures long-term reliability.

U-bolts measure 1/3’’ diameter x 1.7’’ inside width x 3.37’’ inside length. Tie plates are 3.55″ x 3″. Fits 1-1/2″ trailer axles easily.

The kit includes 4 U-bolts, 2 tie plates, 8 nuts, and 8 lock washers. It’s ready for installation right out of the box. Ideal for trailers, piping, and industrial use.

10. Boat Trailer Axle U-Bolt Kit, Stainless Steel Square U-Bolts for 2″ Axle Leaf Springs, Heavy Duty U-Bolt with Nuts and Galvanized Iron Frame Plate (4 U-Bolts 1/2″ D x 2-1/16″ W x 6-5/16″ L + 2 Plates)

This Boat Trailer Axle U-Bolt Kit is a heavy-duty solution for securing your trailer’s leaf springs. It includes everything you need for a complete installation.

The stainless steel U-bolts are rust-resistant and built to last. Each bolt can handle 150 lbs, making it reliable for marine use. The galvanized iron plates add extra strength and durability.

This kit works for boats, trailers, and pontoons. It’s also great for securing wood or metal parts. Easy to install with the right tools and a bit of lubricant.