Description
The SOUTHWEST WHEEL® Round R50642X 42 Spindle & 8-6.5″ Bolt Circle 9/16″ Trailer Hub (Part R54242865LB1E-916) is a heavy-duty hub and spindle assembly built for higher capacity trailers. This complete unit combines a precision round 42 spindle with a robust 8-6.5″ bolt circle hub using 9/16″ studs, making it ideal for demanding trailer applications.
Key Features
- Part Number: R54242865LB1E-916
- Brand: SOUTHWEST WHEEL®
- Spindle Type: Round R50642X 42 Spindle
- Bolt Circle: 8-6.5″
- Studs: 8 x 9/16″-20 (heavy-duty)
- Bearings: 25580 Inner & 14125A Outer
- Contents: Hub, inner bearing, outer bearing, seal, grease cap & lug nuts
- Spindle Dimensions: Width = 2 1/4″, Length = 6″, Overall Length = 11 1/16″
- Capacity: 5,000 lbs. (pair)
- Hub Style: Pre-raced & pre-studded
- Quality: Precision manufactured for reliable performance
This hub and spindle combination offers excellent strength and durability for tandem axle trailers, equipment haulers, and heavy cargo trailers. The 9/16″ studs provide superior clamping force and security under heavy loads, while the round 42 spindle ensures smooth rotation and long service life.
Questions about this SOUTHWEST WHEEL® hub and spindle assembly or compatibility with your axle? Call our trailer experts at 1-800-866-3336.
Browse more Hubs & Spindles.
| Part No | Quantity | Description |
| 006-053-00 | 8 | Nut, Cone 60-Deg |
| RVI-H-855-916 | 1 | Hub, 7K, 865, 9/16″ Cupped & Studded |
| GS-2125DLR | 1 | Seal, Grease 2.125 ID |
| GS-2250DLR | 1 | Seal, Grease 2.225 ID |
| DC-275 | 1 | Grease Cap |
| L-14125A | 1 | Bearing Cone (14125A) |
| L-25580 | 1 | Bearing Cone (25580) |
| R50642 | 1 | 2.25″ Round Spindle |
| FS-SN100 | 1 | 1″ Spindle Nut |
| FA-SW100 | 1 | 1″ Spindle Washer |
| 18X134CP | 1 | Cotter Pin |








