Andorm 8" Swivel-Top Boat Trailer Bunk Bracket Kit 4-Pack, Black, Galvanized Heavy-Duty

Andorm's 4-pack 8" swivel-top bunk bracket kit is a heavy-duty, fully galvanized mounting solution that lets you securely attach and angle bunk boards to 1.5x3, 2x3, or 3x3 trailer crossmembers.

Whether you’re replacing worn mounts or outfitting a new trailer, these bunk brackets are engineered for durable, corrosion-resistant support on saltwater and freshwater trailers. The black finish and galvanized core combine weather protection with a clean appearance, while the swivel top makes aligning bunk boards with your hull quick and precise. This kit includes four identical 8" brackets—enough to service a single trailer side or two smaller trailers—designed for straightforward installation without special parts.

How do these brackets adapt to different crossmember sizes?

The Andorm swivel-top design clamps and bolts to common rectangular trailer crossmembers (1.5x3, 2x3, and 3x3). A universal mounting base and adjustable bolts let you center and level the bracket on varying tube widths without machining or custom adapters.

• Fits 1.5x3, 2x3, and 3x3 crossmember profiles.
• Multiple bolt holes for fore/aft positioning.
• Clamping geometry reduces lateral play when tightened.
• Works with common bunk board thicknesses and hardware.

What makes the swivel-top useful for boat loading and storage?

The swivel top rotates to match the hull angle, so bunks contact the boat evenly across the hull’s length. That improved contact reduces point loading and helps center the boat during launch and retrieval, especially on uneven ramps.

• Adjustable angle for more consistent hull support.
• Easier alignment during winching and docking maneuvers.
• Limits stress on upholstery and gelcoat by spreading loads.
• Quick repositioning without removing the mount from the crossmember.

Are these brackets durable in marine environments?

Yes. The brackets are made from heavy-duty steel with a full galvanization layer to resist rust and pitting in wet conditions. The black finish adds cosmetic protection and helps hide scuffs, making them suitable for frequent trailering and long-term storage near saltwater.

• Full galvanization for corrosion resistance.
• Thick steel construction for structural stability.
• Powdered or painted black exterior for added wear resistance.
• Designed for repeated loading/unloading cycles.

How easy is installation for a DIY trailer owner?

Installation is straightforward with basic hand tools: position the bracket on the crossmember, tighten the bolts, and attach your bunk boards to the swivel plate. No custom welding or specialty fasteners are required, and the included mounting pattern simplifies placement.

• Includes four 8" swivel-top brackets per pack.
• Uses standard bolts and washers—no special hardware needed.
• Illustrated install guidance makes orientation simple.
• Can be adjusted later without disassembling the entire mount.

Who is this for: This kit suits boat owners, trailer shops, and DIYers who need reliable, corrosion-resistant bunk mounts that work with standard rectangular crossmembers. It’s ideal for small to mid-size boat trailers that require adjustable angle support and long-term durability in both freshwater and saltwater conditions. If you want a ready-to-install, heavy-gauge bracket set that keeps bunks aligned and your hull well supported during transport, the Andorm 4-pack 8" galvanized swivel-top bunk brackets are built for that purpose.