Description
The Southwest Wheel® Round R104BT8X BT8 Spindle & 5-on-4.5″ Trailer Hub Assembly (Part R1BT8BT122E) is a complete hub and spindle set designed for light-duty trailer axles. This kit includes the popular BT8 spindle paired with a 5 on 4.5″ bolt circle hub.
Key Features
- Part Number: R1BT8BT122E
- Brand: Southwest Wheel®
- Spindle: Round R104BT8X BT8 Spindle
- Capacity: 2,000 lbs per pair (1,000 lbs per spindle)
- Bolt Pattern: 5 on 4.5″ (5/4.5)
- Bearings: L44643 Inner & Outer
- Studs: Pre-studded with 1/2″-20 studs (5 studs)
- Style: Pre-raced & Pre-studded Hub & Spindle Assembly
- Spindle Dimensions: Base 1-1/4″ | Length 3-3/8″ | Overall Length 8-1/4″
- Includes: BT8 Spindle, Hub, inner bearing (L44643), outer bearing (L44643), seal, grease cap, and lug nuts
- Quality: Southwest Wheel engineered for strength and durability
This complete hub and spindle kit is ideal for building or repairing small single axle utility trailers, boat trailers, and other light-duty applications. The BT8 spindle is a common and trusted design in the trailer industry.
Questions about this Southwest Wheel hub and spindle assembly or compatibility with your trailer? Call our trailer experts at 1-800-866-3336.
Browse more Light Duty Hub and Spindle Combos.
| Part No | Quantity | Description |
| X1023R | 5 | Nut, Cone 60-Deg |
| RVI-BT-5450 | 1 | Hub, 2K, 545, Cupped & Studded |
| GS-1250DLR | 1 | Seal, Grease 1.25 ID |
| DC-200 | 1 | Grease Cap |
| L-44643 | 2 | Bearing Cone (L44643) |
| R104BT8 | 1 | 1.25″ Round BT8 Spindle |
| FS-SN100 | 1 | 1″ Spindle Nut |
| FA-SW100 | 1 | 1″ Spindle Washer |
| 18X134CP | 1 | Cotter Pin |
