iBroPrat Trailer Shackle Kit for Double-Eye Leaf Springs — Tandem Axle 3-1/8" Straps, 9/16" Bolts & Bushings

Complete shackle kit for tandem-axle trailers with double-eye leaf springs, supplying all straps, bushings, bolts and nuts needed for a full repair or replacement. If your trailer uses double-eye springs on tandem axles, the iBroPrat Traile Shackle Kit supplies the common wear parts technicians and DIYers replace most often. This set centralizes straps, nylon bushings, and a full complement of bolts and self-locking nuts so you can service both shackle connections and equalizer points without hunting for missing parts. Components are black-oxidized for improved corrosion resistance and machined to consistent dimensions to simplify fitment.

What comes in the kit and why does the quantity matter?

The kit includes four 3-1/8" shackle straps, four 9/16" nylon bushings, seven 9/16" x 3" shackle bolts, and seven 9/16"-18 self-locking nuts—enough for a tandem axle equalizer setup plus spares. Having seven bolts and nuts is intentional: most tandem-axle equalizers require that count, and kits that supply only six force extra trips to the hardware store.

• 4 shackle straps sized 3-1/8" for standard double-eye spring spacing
• 4 nylon bushings, 9/16" diameter, for smooth pivot and reduced metal-on-metal wear
• 7 bolts (9/16"-3" long) to cover both shackles and equalizer attachments
• 7 self-locking nuts (9/16"-18) to prevent loosening under vibration

How durable and weather-resistant are the parts?

iBroPrat’s components are manufactured from hardened materials and finish-treated with a black oxide coating to increase surface protection against rust and corrosion. The machining tolerance is kept tight to ensure bolt threads and strap holes align cleanly, minimizing installation stress and premature wear.

• Black-oxidized surface slows oxidation on exposed hardware
• Hard, wear-resistant metals for long service life under load
• Tightly machined threads and bolt fit for reliable fastening

Will this kit fit my trailer’s axle capacity and suspension type?

This kit is designed for trailers with double-eye leaf springs and tandem axles typically paired with 3500–7200 lb capacity axles. The 9/16" bolt/bushing sizing and 3-1/8" strap length accommodate common double-eye spring geometry, but always verify measurements on your trailer before ordering.

• Intended for double-eye leaf-spring tandem-axle suspensions
• Bolt and bushing sizes match common 3500–7200 lb axle configurations
• Measure your spring eye and bolt hole diameters to confirm fitment

How straightforward is installation and what tools are needed?

Installation is typically straightforward for anyone comfortable with basic trailer maintenance. You’ll need standard hand tools, such as a ratchet, sockets, wrenches, and possibly a breaker bar or penetrating lubricant for corroded fasteners. Using the supplied self-locking nuts ensures the assembly resists vibration-related loosening once torqued to spec.

• Basic hand tools—ratchet, sockets, open-end wrenches, torque wrench
• Penetrating oil and a soft mallet help remove old, rusted shackles
• Torque nuts to manufacturer specs for safe, vibration-resistant fastening

Who is this for This kit is geared to trailer owners, fleet mechanics, and repair shops that service tandem-axle trailers with double-eye leaf springs. It’s useful for planned maintenance, roadside repairs, and full shackle/equalizer replacements where having the correct bolt and nut count prevents downtime. Choose this set if you want a complete, ready-to-install collection of matching shackle parts with corrosion-resistant finishes and the extra hardware many competing kits omit.

FAQ

Q: Does this kit include enough bolts for tandem-axle equalizers?

A: Yes—this kit supplies seven 9/16" bolts and seven self-locking nuts, the typical count for tandem-axle equalizer setups.

Q: Are the bushings reusable or should they be replaced each service?

A: Nylon bushings wear over time; inspect for deformation and replace when you notice play, noise, or visible damage.