Racewill Trailer Hub Wheel Bearing Kit 4-Set for 5200–6000 lb Tandem Axles, D42 Spindle Fit

Racewill 4-set trailer hub wheel bearing kit supplies every part needed to rebuild four trailer hubs for 5200–6000 lb tandem axles with precise-fit bearings, races, seals and hardware.

This complete kit gathers inner and outer bearings, matching races, two sizes of grease seals, dust caps, spindle nuts and essential fasteners so you can service four trailer hubs in one go. Built from alloy steel with precision manufacturing, the components are sized to fit D42 spindles and axle ranges from 1.25" to 1.75". Whether you’re maintaining a boat trailer, utility trailer or other tandem-axle rig, the kit reduces parts-sourcing time and helps restore proper wheel rotation and seal integrity.

What parts come in each Racewill 4-set hub bearing kit?

The kit is assembled to cover four hubs and includes both inner and outer bearing sets plus all sealing and mounting hardware. Components are clearly specified to make identification and installation straightforward.

• 4× Inner Bearings (25580) and 4× Inner Races (25520)
• 4× Outer Bearings (LM67048) and 4× Outer Races (LM67010)
• 4× Grease Seals 10-36 (22333TB) and 4× Grease Seals 10-10 (21333TB)
• 4× Dust Caps, 4× Rubber Plugs, 4× Spindle Nuts, 4× Cotter Pins, 4× Washers

How do the two grease-seal sizes work and why are they included?

The kit includes both 10-36 and 10-10 style grease seals because some D42 spindle applications use differing seal ID/OD combinations. Supplying both sizes helps ensure a correct seal fit to prevent grease loss and keep contaminants out of the bearings.

• 10-36 (22333TB) measures approximately 2.250" × 3.376" for compatible spindle openings
• 10-10 (21333TB) measures approximately 2.125" × 3.375" for alternate fits
• Using the correct seal reduces grease leakage and extends bearing service life

Will these bearings fit my trailer axle and spindle type?

Racewill kits are designed for tandem axles rated 5200–6000 lbs with axle diameters from 1.25" to 1.75" and standard D42 spindles. Confirm your hub bearing numbers and spindle spec before ordering to ensure compatibility.

• Inner/outer bearing and race numbers match common hub assemblies
• Fits many boat and utility trailers with 5200–6000 lb tandem axles
• Check existing bearing numbers or consult your axle manual for exact match

How much effort is installation and what tools will I need?

Installation is approachable for anyone with basic mechanical skills and a set of garage tools; the kit includes all consumable hardware so you won’t need to source seals or nuts separately. Typical steps include removing the hub, pressing or tapping out old bearings and races, cleaning the hub, installing new races and bearings, packing with grease, and reassembling with provided hardware.

• Tools: socket set, bearing race driver or press, hammer, grease gun, torque wrench
• Kit includes dust caps, cotter pins and spindle nuts to complete the job
• Professional installation recommended if you lack bearing press tools or experience

Who is this for: This Racewill 4-set hub bearing kit is made for trailer owners, marine service shops and fleet managers who need a ready-made parts set to service four hubs at once. It suits boat and utility trailer applications with D42-style spindles and 5200–6000 lb tandem axles, and for anyone who prefers a single purchase that includes bearings, races, seals and installation hardware.