JDMSPEED Trailer Idler Hub Kits 5 on 5" for 3,500 lb Axles — Set of 2 with 1/2"-20 Studs & EZ-Lube Caps

These JDMSPEED trailer idler hub kits are direct-fit 5 on 5" replacement hubs engineered for most 3,500 lb trailer axles and sold as a set of two.

If you're maintaining or rebuilding a trailer axle, the right idler hub kit saves time and reduces future service needs. This pair of JDMSPEED hubs includes installed bearing races, 1/2"-20 studs, inner and outer cone bearings, grease seals, EZ-lube grease caps with rubber plugs, and wheel nuts so you can complete a hub swap or upgrade with fewer parts to source separately.

How do I confirm these hubs will fit my wheel bolt pattern?

Use a simple measurement across adjacent bolt centers: measure from the center of one bolt hole to the center of the next hole. If that distance measures 3 inches, the bolt pattern is 5 on 5" and these kits will match. Also verify your axle capacity is rated at 3,500 lbs to ensure compatibility.

• Measure center-to-center of adjacent wheel studs — 3" indicates 5 on 5" pattern
• Confirm axle is a 3,500 lb rating for proper load match
• Check stud thread specification: 1/2"-20 included

What components are included and why does that matter?

Each kit contains the bearings, seals, grease caps, and hardware needed for a complete idler hub installation. Having the correct cone bearings and seals reduces installation guesswork and helps prevent premature wear from incompatible parts. The kits come pre-installed with bearing races and studs to speed up the job.

• 2x L68149 inner cone bearings per kit
• 2x L44649 outer cone bearings per kit
• Grease seals sized 1.719" x 2.565", EZ-lube caps with rubber plugs, and 1/2"-20 wheel nuts

How does installation typically go and what tools are helpful?

Installation is straightforward for anyone familiar with basic trailer axle service: remove the old hub, press in bearings and seals if needed, install the replacement hub onto the spindle, torque the nut to spec, and fit the grease cap. A bearing press or driver set, torque wrench, and a socket for 1/2"-20 hardware will make the process faster and safer. Always follow axle manufacturer torque guidelines and repack bearings with fresh grease when required.

• Essential tools: bearing press/driver, torque wrench, socket set for 1/2"-20
• Repack bearings with quality trailer grease during assembly
• Install EZ-lube caps and rubber plugs for easier maintenance access

What maintenance should I plan for after installing these hubs?

Routine inspection and periodic greasing are the primary maintenance tasks to keep hubs performing well. Check for play, noise, or heat after the first few miles of towing and at regular service intervals thereafter. The included EZ-lube caps make re-greasing simpler, extending bearing life when serviced on schedule.

• Inspect for looseness or heat after initial installation and after towing
• Re-grease via EZ-lube caps according to mileage or manufacturer schedule
• Replace seals or bearings if contamination or excessive wear appears

Who is this for? These JDMSPEED idler hub kits are ideal for trailer owners, DIY mechanics, and fleet managers replacing worn hubs on 3,500 lb axles with a 5 on 5" bolt pattern. If you value having a complete parts set—bearings, seals, studs, grease caps, and wheel nuts—these kits cut parts-sourcing time and help you get trailers back on the road with the correct, matched components.