Build-Your-Own Trailer Axle Stub Kit · 5 on 4.5 · Round Spindle · 2,000 lb
Part Number: STUB-BT8-545
This product is a build-your-own trailer axle stub kit designed for light-duty trailer applications requiring a 5 on 4.5 bolt pattern and a round weld-on spindle. It is commonly used for utility trailers, small cargo trailers, sidecar trailers, and custom axle fabrication projects.
The kit is rated for 2,000 lb per axle (approximately 1,000 lb per wheel) when properly installed and welded to a suitable axle tube. This spindle does not include an EZ-Lube grease zerk.
Features
- Complete stub axle kit for one wheel position
- Round weld-on spindle with 1.25" base diameter
- 5 on 4.5" bolt pattern idler hub
- Uses standard L44643 inner and outer bearings
- Designed for non-brake trailer axles
- Ideal for custom axle builds and replacements
Specifications
| Specification | Detail |
|---|---|
| Axle Rating | 2,000 lb per axle (1,000 lb per wheel) |
| Spindle Type | Round weld-on spindle |
| Spindle Base Diameter | 1.25" |
| Bearing Size | L44643 inner & outer (1.00" ID) |
| Seal Size | 1.25" ID (GS-1250DL) |
| Hub Bolt Pattern | 5 on 4.5" |
| Lug Stud Size | 1/2"-20 |
| Grease Cap | 1.98" dust cap (non-EZ-Lube) |
| Brakes | Not compatible with brake assemblies |
| Installation | Weld-on (axle tube not included) |
Kit Includes
- 1 × 5 on 4.5 idler hub (2,000 lb rated)
- 1 × Round weld-on spindle (SP-125BT8)
- 2 × L44643 bearings
- 1 × GS-1250DL grease seal
- 1 × 1.98" dust cap with rubber plug
- 5 × 1/2"-20 lug nuts
- Spindle nut and washer
Axle tube, wheels, tires, and brakes are not included. Always confirm measurements and compatibility before welding. Professional installation is recommended.