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This Dexter hub-and-drum assembly is designed for serious towing, built for 8,000-lb E-Z Lube trailer axles with #42 spindles. The cast iron construction gives it the strength to handle heavy loads while maintaining smooth, consistent braking under pressure. With a 12-1/4" diameter and 4-1/2" width, it provides the surface area needed for dependable braking performance on every trip.
Everything you need for a proper install is right in the box—inner bearing (25580), outer bearing (02475), both matching races (25520 and 02420), a 10-36 grease seal, grease cap, wheel bolts, and lug nuts. That means no hunting down extra parts or guessing at compatibility. The 8 on 6-1/2" bolt pattern with 9/16" studs makes wheel mounting straightforward and secure.
Keeping bearings greased is one of the most important parts of trailer maintenance, and this assembly makes it quick and clean. The E-Z Lube-compatible grease cap has a rubber plug that lets you access the zerk fitting on the spindle without taking the hub apart. Just attach a grease gun, add fresh grease, and it flows directly to the inner and outer bearings for long-lasting protection against wear and corrosion.
Whether your setup uses electric or hydraulic drum brakes, this hub-and-drum assembly is ready to go. It’s built to work with standard 12-1/4" brake assemblies, giving you the flexibility to match your existing system or upgrade down the road. The sturdy iron drum surface ensures even contact with brake shoes for confident, consistent stops.
With a 4,000-lb weight rating per hub and a 4-3/4" pilot hole diameter, this assembly is built for balance and durability. From towing heavy equipment to long-distance hauls, its precision-machined parts and factory-fit bearings help ensure smooth rotation and long service life under demanding use.
1. Count the lug holes
Look at the wheel hub or the back of the wheel and count how many lug holes there are(also called bolt holes).
Common configurations include: 4-lug, 5-lug, 6-lug and 8 lug
2a. For even lug counts (4-lug, 6-lug, 8-lug)
Measure from the center of one lug hole directly across to the center of the hole opposite it.
Common configurations: 4 on 4", 6 on 5.5", 8 on 6.5"
2b. For odd lug counts (5-lug)
Measure from the center of one lug hole to the outer edge of the hole directly across (not center-to-center since there's no directly opposite hole).
Common configurations: 5 on 4.5" (most popular), 5 on 5", 5 on 4.75", 5 on 5.5"
Customer Satisfaction Score:
78% were satisfied with this product
22% of customers were not satisfied
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At etrailer we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.
Jameson C.
9/21/2026
that's great to hear! We'll be sure to let John know.