JDMSPEED Trailer Idler Hub Kits for 3,500 lb Axles — 5 on 4.5" Set of 2 with Bearings, Seals & EZ-Lube Caps

JDMSPEED Trailer idler hub kit set of 2 for 3,500 lb axles — ready with bearings, seals, grease caps and 1/2"-20 nuts to replace or upgrade your trailer hubs.

These complete idler hub kits are designed to fit common 3,500 lb trailer and boat axles with a 5 on 4.5" bolt pattern and 1/2"-20 studs. Each kit arrives pre-assembled with bearing races installed and includes the inner and outer cone bearings, grease seals sized 1.719" x 2.565", EZ-Lube grease caps with rubber plugs, plus the required cone wheel nuts. Built for 84-style spindles that use L68149 (inner) and L44649 (outer) bearings, this pair of hubs speeds up maintenance and ensures compatibility with many aftermarket trailer brake flanges and axles.

Will these hubs fit my trailer axle?

They fit most 3,500 lb axles that use a 5 on 4.5" bolt circle and 1/2"-20 studs, especially spindles that accept L68149 and L44649 bearings. The kits ship with races already installed so they’re ready to mount.

• Bolt pattern: 5 on 4.5"
• Bearing set: inner L68149, outer L44649
• Thread size: 1/2"-20 cone wheel nuts included
• Designed for 84 spindles with 4-hole brake flange

What hardware and parts are included in each kit?

Each kit contains everything needed to finish a hub installation—bearing cones, grease seals, grease caps, and cone wheel nuts are all part of the package. Two hubs are supplied to service both sides of an axle at once.

• 2x inner cone bearings L68149
• 2x outer cone bearings L44649
• 2x grease seals (1.719" x 2.565")
• 2x EZ-Lube grease caps with rubber plug
• 10 cone wheel nuts 1/2"-20 thread

How do these kits simplify maintenance and installation?

Races are factory-installed and studs are in place so mounting the hub is faster and cleaner than assembling individual components. The included EZ-Lube grease caps let you grease bearings without disassembly, reducing routine service time.

• Pre-installed bearing races save assembly steps
• EZ-Lube caps allow on-axle greasing
• Complete hardware reduces parts hunting
• Threaded cone nuts match common spindle specifications

Are these hubs compatible with braking components?

Yes — the hubs are configured for use with common trailer brake flanges that match an 84 spindle and a 4-hole brake mounting pattern. Confirm your spindle and brake flange dimensions before installation to ensure fit and safe operation.

• Works with 4-hole brake flange on 84 spindles
• Bolt pattern aligns with standard trailer brake rotors/drums
• Ideal for matching existing axle hardware geometries

Who is this for: These JDMSPEED idler hub kits suit DIY trailer owners, boat trailer users, and mobile mechanics who need a reliable, ready-to-install replacement for 3,500 lb axles. If you want a two-hub set that includes bearings, seals, grease caps and the correct cone nuts for 1/2"-20 spindles—reducing installation time and ensuring parts compatibility—this kit provides the complete solution. Always double-check your spindle, bearing, and bolt pattern specifications before purchase to confirm fitment.