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Brand new, set of 2 trailer axle kits.

Bolt pattern 4 on 4 inch, idler hub, 1 spindle.

Direct fit, no modifications.

Manufacturer autoserve18, part number RBT-4X40H-2K, interchange 545R-4INCH X2.

10 year warranty – that’s confidence.

Perfect for small trailers, utility rigs, mobile units.

Everything you need in one box.

Solid construction, ready to bolt up.

Don’t mess with worn spindles – swap these in and haul with peace of mind.

5 out of 5