iBroPrat Traile Shackle Kit for Double-Eye Leaf Springs 3500–7200 lb — 4 Straps, 7 Bolts, Nylon Bushings

The iBroPrat Traile Shackle Kit is a complete hardware set engineered to replace worn shackle straps and fasteners on tandem-axle double-eye leaf spring suspensions for 3500–7200 lb axles.

If your trailer uses tandem axles with double-eye springs, worn shackles or missing bolts compromise ride quality and safety. This kit gathers the common replacement parts you need—shackle straps, nylon bushings, extra bolts and self-locking nuts—so you can complete a repair or service without running back to the parts store. Components are black-oxidized for corrosion resistance and machined for fit, making installation straightforward for anyone familiar with trailer suspension work.

What parts are included and why does the kit contain seven bolts?

The kit supplies shackle straps, nylon bushings, bolts, and self-locking nuts sized to suit double-eye leaf springs on tandem axles. It provides seven bolts and nuts because most tandem-axle equalizer setups use seven mounting points; having the full set avoids incomplete repairs and saves time.

• 4 shackle straps — 3-1/8" length for standard double-eye spacing
• 4 nylon bushings — 9/16" to reduce metal-on-metal wear and noise
• 7 shackle bolts — 9/16"-3 x 3" long for each attachment point
• 7 self-locking nuts — 9/16"-18 to resist loosening from vibration

How does the kit perform in wet or corrosive environments?

Hardware in the kit has a black-oxidized finish that helps resist surface rust and corrosion compared with unfinished steel. While oxidation improves durability, periodic inspection and proper lubrication protect components in coastal or heavily salted-road conditions.

• Black-oxidized finish reduces corrosion on exposed parts
• Nylon bushings resist moisture-related seizing and reduce wear
• Self-locking nuts maintain clamp under vibration and road shock

How easy is installation and what tools will I need?

Installation is straightforward for anyone who has basic trailer maintenance experience and a few common tools. The kit’s machined bolts and matching nuts simplify alignment; you’ll mainly need wrenches, sockets, and basic jacks or stands to support the trailer safely while you work.

• Required tools: floor jack or stands, sockets/wrenches for 9/16" fasteners
• Replacement steps: support axle, remove old shackles, install new straps and bushings, torque nuts
• Includes enough hardware to finish most tandem-axle equalizer repairs in one session

Will these pieces fit my trailer’s springs and axle rating?

The kit is designed for double-eye leaf springs used on tandem-axle trailers with axle ratings in the 3500–7200 lb range. Confirm the 3-1/8" strap length and 9/16" bolt diameter match your existing hardware before purchase to ensure proper fitment.

• Intended for double-eye spring configurations on tandem axles
• Bolt diameter: 9/16"; bolt length: 3"—common in many trailer equalizers
• Appropriate for axle capacities from 3500 lb up to 7200 lb when paired with compatible springs and hangers

Who this kit is for: trailer owners, fleet managers, and DIY mechanics who need a dependable, ready-to-install set of shackle straps and hardware for tandem-axle double-eye leaf spring systems. It’s ideal when you want to replace worn shackles and hardware in one visit, avoid incomplete bolt counts, and restore secure suspension attachment without sourcing multiple parts separately.