Racewill Trailer Shackle Kit — 2-Pack for Tandem Axle Double-Eye Springs (3,500–7,200 lb), Nylon Bushings

Racewill 2 Pack Trailer Shackle Kit is a complete tandem-axle hardware set designed to replace worn shackles, bushings, and bolts on double-eye spring suspensions for trailers rated 3,500–7,200 lbs.

This comprehensive kit supplies the parts you need to restore safe movement and alignment in tandem axle trailer suspensions that use double-eye leaf springs. Shackles are a wear-prone pivot point in spring systems, and replacing them as a matched set helps maintain ride stability, reduce noise, and prevent premature wear on related components. The Racewill kit groups shackle straps, nylon bushings, bolts, and locking nuts, finished for corrosion resistance and outdoor service.

What exactly comes in the Racewill tandem axle shackle kit?

The kit includes everything required to rebuild the shackles on both sides of a tandem-axle trailer with double-eye springs. Parts are matched for fit and function so you can replace all moving shackle connections at once.

• 8 x 9/16" nylon bushings sized for double-eye springs
• 8 x 3-1/8" shackle straps engineered for tandem axles
• 12 x 9/16"-18 × 3" shackle bolts and locking nuts for secure fastening
• Durable, corrosion-resistant materials suitable for outdoor use

How do Racewill shackles improve trailer suspension performance?

New shackles and bushings restore proper pivot action at the spring eye, which helps maintain even load distribution and reduces binding as the suspension cycles. That leads to quieter operation and reduces stress on springs and mounting hardware.

• Nylon bushings reduce metal-on-metal wear and absorb shock
• Correct-length straps preserve spring geometry for stable tracking
• High-strength bolts with locking nuts resist loosening under vibration

Will this kit fit my trailer and how do I confirm compatibility?

The Racewill kit is intended for tandem axle trailers that use double-eye leaf springs with shackle components sized to the included hardware. Confirm compatibility by measuring existing bushing inner diameter and strap length to match the kit specifications.

• Designed for trailer axles rated between 3,500 and 7,200 lbs
• Verify existing shackle bolt diameter is 9/16" and strap length near 3-1/8"
• Check spring end type—double-eye springs require this shackle style

How do I install the Racewill shackle components safely?

Installation requires standard hand tools and safe jacking/ support of the trailer. Replace shackles in matched pairs, torque bolts to the recommended values, and use the locking nuts provided to prevent loosening from road vibration.

• Support trailer on sturdy jack stands before removing hardware
• Replace both forward and rear shackles on each spring for balanced wear
• Tighten bolts snugly, then back off slightly if required for free pivoting

Who this kit is for: The Racewill 2 Pack Trailer Shackle Kit is ideal for trailer owners, DIY mechanics, and small fleet operators who maintain tandem-axle trailers with double-eye leaf springs. If you notice excessive play, squeaking, or uneven tire wear, this matched set gives you the bushings, straps, and hardware necessary to restore correct suspension movement and prolong the life of springs and mounts.