This OEM EZ Loader Knott Sealed Bearing Hub Kit (Part 250-033291) is designed for trailers equipped with AutoFlex-Knott torsion axles, commonly found on EZ Loader and Magic Tilt lightweight single-axle and tandem-axle trailers. This is a non-serviceable, fully sealed bearing hub, engineered for reliability, low maintenance, and smooth towing performance.

The sealed hub design eliminates traditional bearing grease maintenance and provides improved corrosion resistance for both saltwater and freshwater environments. Ideal for routine hub replacement, long-distance towing, and restoring older Knott axle trailers to factory performance.

⭐ What’s Included (Complete Hub Kit)

• 5-lug sealed bearing hub

• Lug nuts (5)

• Dust cap

• Flange nut

• Pre-installed non-serviceable sealed bearing

Everything needed for a complete bolt-on installation.

🛠 Fitment + Applications

• Designed for Knott AutoFlex axles used on many EZ Loader and Magic Tilt trailers

• 2700 lb rated hub – ideal for lightweight aluminum trailers and small boats

• Works with 5 on 4.5” bolt pattern wheels

• Common on trailers from 2010–current

• Perfect replacement when your existing Knott sealed hub shows grinding, heat discoloration, or excessive play

• NOT compatible with UFP, Dexter, Tie-Down, or Lippert hubs

🚤 Why Choose a Sealed Bearing Hub?

• Zero routine bearing greasing

• No inner or outer bearings to service

• Better protection from sand, road grit, and saltwater

• Reduced downtime and easier maintenance

• Ideal for trailered boats stored outdoors or used in coastal regions

🔍 Specifications

• Capacity: 2700 lb

• Bolt Pattern: 5-on-4.5"

• Bearing Type: Factory-sealed, non-serviceable

• Material: Coated steel hub housing with sealed bearing assembly

• Axle Type: Knott / AutoFlex torsion axles

Supplied by 411Marine Recreational — part of the 411-Trailers.com family, serving boaters and trailer owners since 1998.