GREPSPUD 4-on-4" Trailer Hub Kit for 2,000 lb Trailers — Fits 1" or 1-1/16" Straight Axles, Complete 32-Piece Service Kit

Complete 4-on-4" hub kit for 2000 lb trailers that fits 1" or 1-1/16" straight axles and includes bearings, seals, nuts, dust caps, and hardware for a full axle service.

This GREPSPUD hub kit supplies everything needed to rebuild or replace both wheels on a small trailer rated at 2,000 pounds. The two 4-bolt, 4" hubs accept either 1" or 1-1/16" straight spindles thanks to the included dual-size bearing sets and grease seals, so you can buy one kit with confidence even if your spindle size is uncertain. Parts are protected in individual bubble bags and boxed to reduce shipping damage, and steel parts use corrosion-resistant finishes for longer service life.

Will this hub kit fit my trailer spindle?

Yes — the kit is designed to accommodate both common spindle diameters used on light trailers. It contains bearings, seals, and dust caps sized for either 1" or 1-1/16" straight axles, removing the need to guess your spindle size before ordering.

• Includes 4 L44643 bearings (1.00" I.D.) and 4 L44649 bearings (1-1/16" I.D.)
• Includes two 1.25" I.D. and two 1.5" I.D. grease seals
• Fits 4-bolt 4" hubs rated for 2,000 lb trailers
• Works with straight spindles commonly found on utility, boat, and small equipment trailers

What parts come in the 32-piece kit and how does that help a repair?

The kit is a full-service set sized for two wheels, so you get paired components and spare small parts for a typical axle rebuild. This reduces downtime and avoids multiple orders when you discover worn bearings, damaged dust caps, or missing hardware.

• 2 hubs (4-bolt, 4"), 4 dust caps, and 4 rubber plugs
• 8 lug nuts (1/2"-20) and 2 cotter pins (2.3")
• 4 L44643 + 4 L44649 bearings for both spindle sizes
• 2 grease seals 1.25" I.D. and 2 grease seals 1.5" I.D.

How durable are the hubs, and what should I expect from the finish?

GREPSPUD hubs are formed from quality steel with corrosion-resistant treatments to extend usable life in outdoor conditions. Hubs feature a black coating while dust caps are zinc-plated; seals and rubber plugs resist common contaminants to protect bearings and interiors.

• Steel hub bodies with black protective coating for rust resistance
• Zinc-plated dust caps for extra corrosion protection
• Rubber seals and plugs to keep dirt and moisture out of bearing areas
• Packaged to minimize deformation during shipping

Are these parts easy to install and any special tips?

Installation follows standard hub-and-bearing assembly procedures, but note the kit’s seals and caps are slightly oversized by design to ensure a tight fit after being driven into place. Prepare to use a wood block and a hammer or rubber mallet to seat seals and dust caps without damaging mating surfaces.

• Seals and caps designed slightly larger for secure press-fit installation
• Use a wood block or rubber mallet to evenly seat seals and caps
• Pack bearings with grease and torque lug nuts to manufacturer specs
• Keep cotter pins and lug nuts on hand for final assembly security

Who this kit is for: owners and small-business operators who service utility trailers, boat trailers, motorcycle trailers, and other light trailers up to 2,000 lb will find this GREPSPUD 4-on-4" hub kit useful. It’s ideal for DIY mechanics, mobile repair techs, and fleet maintainers who want a convenient, value-priced pair of hubs with both common bearing sizes included. If you need a complete, boxed replacement set that covers two wheels and removes the guesswork about spindle size, this kit is a practical, ready-to-install option.