Trailer Shackle Kit 312L 2-Pack for 3500lb-7200lb Axles - Easy Install

Our review of the Lonffery 2 Packs Trailer Alex Shackle Kit finds it best suited for trailer owners replacing or rebuilding double eye leaf spring hookups. The single biggest reason to buy is its complete kit approach: it includes eight 312L shackle straps, eight EQ-E1 bushings and the 9/16 bolts and nuts needed to finish most jobs. Installers who want a direct, no-hunt replacement will appreciate the kit's clear fit range and straightforward design, while those needing specialty or oversized shackles should verify dimensions before purchasing.

Key Features

• Complete kit: Comes with eight 312L shackle straps, eight EQ-E1 bushings and twelve 9/16 bolts and nuts so users have all essential parts for a full swap.
• Compatibility: Designed to typically fit axles rated between 3,500lb and 7,200lb, making it suitable for a wide range of light trailers and utility applications.
• Compact dimensions: The shackle straps measure 4-3/8 in long and 1-1/4 in wide, providing a predictable fit for double eye leaf springs that match those proportions.
• Easy installation: Engineered for straightforward mounting, reducing time at the workbench and minimizing the need for extra parts during replacement.
• Durable function: The kit focuses on practical function and fit for axle replacement tasks, with customers noting reliable fit and operation.

Who It's For

This kit is ideal for DIY trailer owners and mechanics who need a full set of shackles and related hardware for replacing double eye leaf springs on light trailers. It suits utility trailers, small boat trailers or any setup using standard double eye spring hangers within the stated weight range. The included bushings and bolts make it a time-saving option for projects where tracking down matching hardware would be a hassle.

Those who should look elsewhere include owners of heavy commercial trailers outside the 3,500lb to 7,200lb range or people who require custom-length or nonstandard shackle widths. Also check fit against your spring eye and hanger measurements before buying if you run an uncommon suspension layout.

Pros & Cons

Pros

• Complete set reduces parts sourcing and speeds installation.
• Good fit and functionality for standard double eye leaf spring replacements.
• Compact, consistent dimensions make compatibility easy to verify.
• Engineered for easier installation, helpful for DIY mechanics.

Cons

• Hardware quality received mixed feedback from some customers, so buyers should inspect fasteners on arrival.
• May not suit oversized or specialized suspension setups outside the typical spec range.

Specifications

Kit contents	8 shackle straps, 8 EQ-E1 bushings, 12 9/16 bolts and nuts
Shackle strap length	4-3/8 in
Shackle strap width	1-1/4 in
Typical axle fit	3,500lb to 7,200lb
Shackle model	312L
Bushing model	EQ-E1

Our Verdict

The Lonffery 312L shackle kit is a practical, value-minded choice for owners replacing double eye leaf springs on light trailers because it supplies matching straps, bushings and hardware in one package. It saves time sourcing parts and performs as expected for the stated axle range, making it a sensible buy for DIYers and small trailer repair shops, provided buyers confirm their spring and hanger measurements and inspect the hardware on delivery.

Frequently Asked Questions

Will these shackles fit my trailer?
They typically fit axles rated 3,500lb to 7,200lb and the straps are 4-3/8 in long by 1-1/4 in wide; verify your spring eye and hanger measurements before purchase.

Does the kit include all mounting hardware?
Yes, the package includes twelve 9/16 bolts and nuts plus eight EQ-E1 bushings to complete the installation.

Is installation difficult?
The kit is engineered for easy installation and is suitable for competent DIYers and professional mechanics doing standard double eye spring replacements.