This hub conversion adapter from A-1 PRODUCTS lets you run modern wide-5 wheels on a 5x4.75 bolt pattern hub. It's a great fit for boat trailer owners who frequently launch or tow heavy loads and need a safe, reliable way to convert their wheel fitment without replacing the entire hub.
Built from aluminum and rated for the 5/8-11 inch stud thread found on most marine trailer hubs, this adapter has a 3/8-inch thickness for solid rigidity while keeping weight low. That matters when saltwater exposure and repeated launches are part of your routine. The natural aluminum finish holds up well against oxidation, though it is still wise to rinse after saltwater use. At 5.44 pounds, it adds very little unsprung mass while keeping the precision tolerances needed for proper wheel centering and balanced highway rotation.
Boat trailer operators, fishing fleet managers, and anyone updating vintage or specialty trailers will find this adapter useful. Installation is simple: it threads right onto your existing studs with no lathe work needed. Check your hub for a 5x4.75 bolt pattern and 5/8-11 stud specification before ordering. Each adapter is sold individually, so buy one per wheel position. Use quality wheel fasteners rated for marine service and follow your trailer manufacturer's torque specs for safe ramp use.
| Item Returns | This item can be returned |
|---|
