3500 lb Axle Stub End Spindle Kit – 6 on 5.5 Brake Drum Assembly – Both Sides
Complete replacement spindle and brake assembly kit for standard 3,500 lb trailer axles using a 6 on 5.5 bolt pattern. Designed for situations where an existing spindle is bent, worn, or no longer safely usable. This kit provides matching drums, brake assemblies, bearings, seals, and weld-on spindles for both sides of one axle.
Kit Includes
- 2 × 6 on 5.5 Brake Drums (3,500 lb rating)
- 2 × 10" Electric Brake Backing Plates (Left and Right)
- 12 × Lug Nuts
- 2 × 1.98" Dust Caps
- 2 × L44649 Outer Bearings
- 2 × L68149 Inner Bearings
- 2 × 10-19 Grease Seals
- 2 × SP-20084FZ Spindles
- 2 × 1" Axle Nuts
- 2 × 1" Spindle Washers
R&P Knowledge Hub
A stub end spindle kit is used when an axle spindle is bent, worn, or damaged beyond safe operation. The replacement spindle is welded to the axle tube to restore proper bearing alignment and brake mounting surfaces.
Standard 3,500 lb axles commonly use a #84 spindle configuration with L44649 outer and L68149 inner bearings. Always confirm spindle dimensions, bearing numbers, and brake flange compatibility before ordering.
Spindle Details
| Spindle Feature | Specification |
|---|---|
| Axle Rating | 3,500 lb |
| Spindle Type | #84 Style |
| Base Diameter | 2.0" Round |
| Tail Shaft Length | 3.37" |
| Bolt Pattern | 6 on 5.5" |
Important: Verify all measurements before installation. Professional welding and alignment recommended.
