Andorm Boat Trailer Bunk Bracket Kit 4-Pack 8" Galvanized Swivel-Top, Fits 1.5x3–3x3 Crossmembers

Andorm 8" Boat Trailer Bunk Bracket Kit is a four-piece, heavy-duty galvanized swivel-top mounting solution that secures bunk boards to 1.5x3, 2x3, and 3x3 crossmembers while resisting rust and letting you fine-tune angle for safe loading and trailering.

Built from thick steel and finished with full galvanization, this 4-pack of 8-inch bunk brackets fits common rectangular trailer crossmembers and gives adjustable swivel tops so bunks follow your hull shape. The kit is designed for boat owners and trailer builders who need dependable, low-maintenance hardware for intermittent launching, long-term storage, or frequent road trips. Each bracket ships ready to mount and requires no custom welding or special fasteners beyond standard bolts.

How does the swivel top improve loading and hull support?

The swivel top lets the bunk pivot to match the hull’s angle as you load or cradle the boat, reducing point pressure and improving even contact along the keel or chine. That movement helps keep the hull centered during launch and retrieval, and prevents rubbing or catching when the trailer settles on uneven surfaces.

• Adjustable swivel head for angling bunks to hull contours
• 8-inch height provides clearance and leverage for loading
• Smooth pivot reduces wear on carpeted bunks and hull gelcoat
• Works on steep or shallow hull shapes without permanent modification

Will these brackets fit my trailer crossmembers?

Yes — the brackets are sized to clamp or bolt to 1.5x3, 2x3, and 3x3 rectangular crossmembers commonly used on boat trailers. The mounting plate and swivel design accommodate those standard dimensions and let you position bunks fore-to-aft as needed for proper weight distribution.

• Compatible with 1.5x3, 2x3, and 3x3 rectangular crossmembers
• Mounting slots accept standard trailer bolts and carriage bolts
• Four brackets in the pack let you outfit a typical tandem or single-axle setup
• Can be used with carpeted or vinyl-wrapped bunk boards

How durable and weather-resistant are these galvanized brackets?

Each bracket is constructed from heavy-duty steel and fully galvanized to guard against corrosion in freshwater and salt-spray environments. The finish extends service life and reduces maintenance, so you spend less time replacing hardware and more time on the water.

• Full galvanization blocks rust and pitting
• Thick steel construction resists bending under load
• Low-maintenance — no need for frequent painting or touch-ups
• Suitable for long-term trailering and winter storage outdoors

How easy is installation and what’s included in the kit?

Installation is straightforward with basic hand tools; no specialized welding or fabrication is required. The kit contains four 8-inch swivel-top brackets and is intended to pair with your existing bunk boards and standard trailer bolts — photos and simple instructions help speed alignment and mounting.

• Pack of four 8" swivel-top bunk brackets
• Installs using common bolts and wrenches — no extra parts included
• Quick alignment using the swivel top before tightening
• Instruction image included to guide placement on crossmembers

Who is this for? Boat owners, trailer builders, and marina technicians who need a reliable, corrosion-resistant mounting solution for carpeted or vinyl bunks will find this Andorm 4-pack ideal. It’s especially suited to small-to-medium recreational boats where adjustable bunk angle, solid steel construction, and the ease of bolt-on installation matter most. If you want a long-lasting bracket set that fits common rectangular crossmembers and reduces hull wear during launching, this kit provides practical, affordable hardware without welding or custom parts.