SPARKWHIZ Trailer Leaf Spring Hanger Kit for 1-3/4" Double-Eye Springs — Single-Axle, Corrosion-Resist

SPARKWHIZ Trailer Leaf Spring Hanger Kit securely mounts 1-3/4" double-eye springs to single axles rated 2,000–7,000 lb, built for 3,500 lb single-axle trailers.

This complete hanger and shackle set provides the hardware you need to replace worn mounts or upgrade a trailer suspension. The kit includes two low hangers, two taller hangers, four shackle straps sized for 3.09" eye-to-eye springs, and six heavy-duty 9/16"-18 shackle bolts with locknuts. Parts are made from corrosion-resistant materials for reliable outdoor performance and long service life.

What components are included and how do they fit my trailer?

The kit contains four hangers (two 2.1" tall and two 3" tall) so you can configure front and rear mounting positions, plus four shackle straps and six shackle bolts with locknuts. It’s designed around 1-3/4" wide double-eye leaf springs and common single-axle setups.

• Two 2.1" hangers and two 3" hangers for varied ride height needs.
• Four shackle straps, eye-to-eye length 3.09" for double-eye springs.
• Six 9/16"-18 x 3" bolts with locknuts for secure fastening.
• Compatible with axles rated 2,000–7,000 lb, ideal for 3,500 lb single axles.

How durable is the kit for outdoor and marine conditions?

Each piece is manufactured from corrosion-resistant materials and finished to withstand road salt, mud, and weather exposure. The hardware and straps resist rust and abrasion, reducing maintenance and extending service life when mounted under the trailer.

• Corrosion-resistant metal construction prevents premature rust.
• Locknuts help maintain tension and resist loosening from vibration.
• Rugged shackle straps built for repeated suspension movement.
• Suitable for regular towing and trailer storage outdoors.

Will this kit match my spring and axle specification?

The kit is purpose-built for double-eye leaf springs that are 1-3/4" wide and for axles within the 2,000–7,000 lb range. If your spring width or axle rating falls inside these measurements, the hangers and shackles will be compatible without modification.

• Designed around 1-3/4" wide double-eye springs.
• Formulated for single-axle systems from 2,000 to 7,000 lb.
• Ideal for 3,500 lb single-axle trailer applications.
• Measure your spring eye and axle rating before ordering to ensure fit.

How straightforward is the installation for a DIYer?

Installation is straightforward for anyone familiar with basic trailer suspension work and common tools. The package includes all shackle bolts and locknuts, so you won’t need to source specialty hardware; basic drilling, alignment, and torqueing are the primary tasks.

• Includes all necessary shackle bolts and locknuts for assembly.
• Hangers available in two heights for easier alignment with existing mounts.
• Requires standard hand tools, torque wrench recommended for safety.
• Professional help advised if you’re unfamiliar with axle/suspension procedures.

Who this is for: This SPARKWHIZ Trailer Leaf Spring Hanger Kit suits trailer owners, repair shops, and DIY mechanics replacing or upgrading leaf spring mounts on single-axle trailers. It’s best for trailers using 1-3/4" double-eye springs and axles rated between 2,000 and 7,000 lb — particularly common 3,500 lb single-axle setups — and for anyone wanting a corrosion-resistant, ready-to-install hardware package for reliable towing performance.