The trailer hub will not work on a tapered axle.
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Ultra-Tow XTP Ultra-Pack Trailer Hub, 5 on 4-1/2in., 1350-Lb. Capacity

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Shipping:
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- Ultra-Pack greasing system repacks bearings without hub removal
- High-speed marine-grade hub with electroplated corrosion resistance
- High-quality cast iron construction for strength and durability
- Includes hub with pre-installed bearings, seal, grease cap with zerk, lug nuts and dust cap installation tool
See full description
Description
Key Specs
Reviews
Q & A
Warranty
Compare
Product Summary
What's Included
- (1) Ultra-Tow XTP Ultra-Pack Trailer Hub (1) Seal (1) Grease cap with zerk (5) Lug nuts (1) Dust cap installation tool

Features + Benefits
- Ultra-Pack greasing system repacks bearings without hub removal
- High-speed marine-grade hub with electroplated corrosion resistance
- High-quality cast iron construction for strength and durability
- Includes hub with pre-installed bearings, seal, grease cap with zerk, lug nuts and dust cap installation tool
Key Specs
| Attribute | Specification |
|---|---|
item# | 572251 |
Brand | Ultra-Tow |
Manufacturer's Warranty | 2 year limited warranty |
Ship Weight | 6.81 LB |
Studs (qty.) | 5 |
Bolt Circle Pattern | 4.5 in |
| Attribute | Specification |
|---|---|
Weight Capacity Each | 1,350 lb |
Seal Size ID | 1.25 in |
Seal Size OD | 1.5 in |
Bearing Size ID | 1-1/16 in |
Bearing Size OD | 1-1/16 in |
Spindle Size | 1.5 in |
Reviews
Questions & Answers
Questions
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· 6 years ago
Will this hub fit on a tapered axle?
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UltraTowExpert11· 3 years ago
Helpful?
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GDHA1· 6 years ago
No
Helpful?
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· a year ago
What are the highway speed rating
1 answer-
UltraTowExpert12· a year ago
This high speed hub does not have an official speed rating. Usually, the tire installed on the trailer has a designated speed rating, and that rating should serve as the guideline for the trailer operator.
Helpful?
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· 2 years ago
what is dia. of outside bearing. I am replacing old type donut mobile home wheels
1 answer-
UltraTowExpert12· 2 years ago
The outer bearing is 1-1/16". The inner bearing is 1-1/6".
Helpful?
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· 3 years ago
Will this work with the Ultra-Tow 40in. x 48in. Aluminum Utility Trailer Kit?
1 answer-
UltraTowExpert12· 3 years ago
This is a 5-stud hub. The Ultra-Tow trailer kit, item 49804, has a 4 stud hub, part #ITI37560.15. That hub is available through our sister company, Jacks Small Engines. Please visit www.JacksSmallEngines.com for pricing and availability.
Helpful?
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· 3 years ago
Is there a bearing kit available for this hub
1 answer-
UltraTowExpert29· 3 years ago
The bearing kit is our part #785447. It can be ordered online through our sister company Jacks Small Engines. Please visit www.jackssmallengines.com for pricing and availability.
Helpful?
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· 3 years ago
Will this hub work with spindle #5712453?
1 answer-
UltraTowExpert11· 3 years ago
The hub will not work with the spindle item number 5712453. We do not offer a spindle that will have the same specifications as this hub.
Helpful?
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· 3 years ago
Is this for a 3/4" shaft?
1 answer-
UltraTowExpert10· 3 years ago
It would require a 1 1/16" axle diameter. This would not be compatible with a 3/4" shaft.
Helpful?
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· 4 years ago
What is the OD of the hub? What minimum ID rim/wheel center bore is required to mount on this hub?
1 answer-
UltraTowExpert11· 4 years ago
The outside diameter on the hub is 2.48". The minimum rim/wheel ID will be 2.5".
Helpful?
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· 5 years ago
will this hub #572251 work on axle #49133
1 answer-
UltraTowExpert12· 5 years ago
This hub is compatible with the Ultra-Tow axle, item 49133.
Helpful?
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· 5 years ago
What is the extra seal for? Is it required?
1 answer-
UltraTowExpert12· 4 years ago
This hub includes two different seal sizes. It has the 1.25" seal pre-installed. The extra seal is 1.5" in diameter and is needed to fit a large axle/bore size.
Helpful?
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Warranty
Manufacturer's Warranty
2 year limited warranty
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Specifications
5
4
5
4.5 in
4 in
4.5 in
1,350 lb
1,350 lb
1,250 lb
1.25 in
1.25 in
1.25 in
1.5 in
1.5 in
-
1-1/16 in
1-1/16 in
1 in
1-1/16 in
1-1/16 in
1 in
1.5 in
1.5 in
1.25 in
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