Build-Your-Own Trailer Axle Kit · 3,500 lb (1,750 lb per wheel)

Spindle Kit Part Number: SP20484
5 on 4.75" Bolt Pattern (GM / Chevy)

This listing is for a build-your-own trailer axle kit, designed for fabricators or repairs where a complete axle tube is not supplied. The kit includes everything required except the axle tube.

The included spindles feature a 4" long, 1.5" square weld-on tail shaft, making them easy to weld into common 2" square tubing with 1/4" wall thickness.

Rated at 1,750 lb per wheel — 3,500 lb axle capacity

Bolt Pattern Reference

This kit uses a 5 on 4.75" bolt pattern (commonly referred to as 4-1/2" stud spacing).

Bearing & Seal Specifications

• Outer Bearing: L44649 (1.0625" ID)
• Inner Bearing: L68149 (1-3/8" ID)
• Grease Seal: 10-19 (1.75" ID)

What’s Included

• (2) Idler hubs — 5 on 4.75" bolt pattern (3,500 lb rated)
• (2) Weld-on spindles — SP20484 (square base)
• (2) Inner bearings — L68149
• (2) Outer bearings — L44649
• (2) Grease seals — 10-19
• (2) 1.98" dust caps
• (10) Lug nuts
• (2) Axle nuts (1")
• (2) Spindle washers (1")

Important Notes

• This kit does not include the axle tube
• Designed to weld into 2" square tubing with 1/4" wall
• Idler hubs only — no brakes
• Other bolt patterns are available separately

This kit is ideal for building a custom axle or replacing damaged spindle ends where retaining the original axle tube is not required.