Fanmao Adjustable Leaf Spring Lift Shackles — 4-Pack 1/4" Steel Powder-Coated, Universal Fit

These Fanmao adjustable leaf spring lift shackles are a 4-pack of 1/4" low-carbon steel brackets, powder-coated for corrosion resistance and designed to fit a wide range of trailers and vehicles.

When you need simple, sturdy hardware to raise or adjust the rear ride height or suspension geometry of a trailer or light vehicle, these shackles offer a universal, non-vehicle-specific option. Each shackle measures 9" long by 2" wide with 1/4" thick steel construction, a 1/2" bolt hole, and hole centers spaced 1" apart—giving you room to fine-tune alignment or lift while keeping installation straightforward. The powder-coated finish helps protect against rust from road spray and weather, and packaging includes four matching shackles so you can replace a full axle set in one job.

How do these shackles change ride height or leaf spring angle?

Adjustable shackles alter the mount point of the leaf spring relative to the axle, which shifts the static ride height slightly and can change spring arch tension. By selecting a different hole position you can achieve incremental lift or re-center the axle when springs sag.

• Four-position spacing allows small, controlled height changes.
• 1/4" steel thickness balances strength with manageable weight.
• 1/2" bolt hole matches common U-bolt and shackle hardware sizes.
• Works best for minor lift needs, trim adjustment, or replacing worn shackles.

Will these fit my vehicle or trailer?

These are universal shackles not tailored to a specific make or model; fit depends on your spring eye width and bolt diameter. Measure the spring eye and existing shackle bolt, then compare to the shackle dimensions—9" length, 2" width, 1/2" hole—to confirm compatibility.

• Universal design for broad application across trailers and light-duty vehicles.
• Verify spring width and bolt size before ordering to ensure fit.
• Hole centers are spaced 1" on center for adjustability choices.
• Includes four shackles to cover both sides of an axle or a full axle set.

How durable are these shackles for regular road use?

Fabricated from low-carbon steel and finished with a powder coat, these shackles withstand normal road conditions and moderate loads. They are intended for light- to medium-duty use; for heavy commercial or extreme off-road demands you should evaluate higher-rated or thicker components.

• Low-carbon steel body for everyday structural strength.
• Powder-coated surface improves corrosion resistance and longevity.
• 1/4" material thickness resists bending under typical trailer loads.
• Sold as a set of four to ensure matched wear and balanced suspension response.

What hardware and installation steps are needed?

Installation requires matching 1/2" bolts or pins, appropriate nuts and washers, and basic hand tools. Remove the old shackle assembly, align the spring eye with the selected hole position, insert the bolt, and torque to the vehicle maker’s recommended spec if available.

• Use 1/2" bolts or pins compatible with the shackle hole and existing mounting points.
• Include lock washers or nylon-lock nuts to prevent loosening under vibration.
• Inspect spring eyes and mounting plates for wear before fitting new shackles.
• Tighten hardware to recommended torque and re-check after a short road test.

Who is this for: These Fanmao adjustable leaf spring lift shackles suit DIY mechanics, trailer owners, and small fleet operators who need a cost-effective way to replace worn shackles or make small ride-height and alignment adjustments. They are best for light- to medium-duty trailers, utility vehicles, and owners seeking a universal, easy-to-install shackle set rather than a vehicle-specific kit.