Not likely marine grade. The hub is only painted so it is probably not marine rated. If putting it on a boat trailer just fill the hub with good marine grease. That will quickly push out the lithium grease.
Ultra-Tow XTP Ultra-Pack Trailer Hub, 5 on 4-1/2in., 1750-Lb. Capacity

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Shipping:
Free shipping (lower 48 states) - Available now
$19.99 Same DayStore Pickup:
18 in stock at Fredericksburg VA - Pickup in under 1 hr
- Fits 5 on 4-1/2in. bolt pattern; rated for 1,750-lb. capacity
- Ultra-Pack greasing system repacks inner and outer bearings without disassembly
- Zerk fitting allows fresh grease to purge old grease from the front of the hub
- Triple-lip, spring-loaded seal helps protect bearings from water and corrosion
- High-speed electroplated cast iron hub resists rust for marine and utility use
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Description
Key Specs
Reviews
Q & A
Warranty
Compare
Product Summary
What's Included
- (1) Ultra-Tow XTP Ultra-Pack Trailer Hub

Features + Benefits
- Fits 5 on 4-1/2in. bolt pattern; rated for 1,750-lb. capacity
- Ultra-Pack greasing system repacks inner and outer bearings without disassembly
- Zerk fitting allows fresh grease to purge old grease from the front of the hub
- Triple-lip, spring-loaded seal helps protect bearings from water and corrosion
- High-speed electroplated cast iron hub resists rust for marine and utility use
- Includes hub with bearings, seal, grease cap with zerk, stud nuts and dust cap installation tool
- Designed to work with existing trailer spindles
Key Specs
| Attribute | Specification |
|---|---|
item# | 572061 |
Brand | Ultra-Tow |
Manufacturer's Warranty | 2 year limited warranty |
Ship Weight | 9.0 LB |
Studs (qty.) | 5 |
Bolt Circle Pattern | 4.5 in |
| Attribute | Specification |
|---|---|
Weight Capacity Each | 1,750 lb |
Seal Size ID | 1.375 in |
Bearing Size ID | 1-3/8 in |
Bearing Size OD | 1-1/16 in |
Spindle Size | 1.72 in |
Reviews
Questions & Answers
Questions
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· 6 years ago
Grease in hub
hub # 572061
comes with Jieling general purpose lithium grease installedis this grease marine grade?
Hub is going on boat trailer
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CSTX· 6 years ago
Helpful?
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UltraTowExpert30· 6 years ago
This Ultra-Tow XTP utlra pack trailer hub uses general purpose grease, not marine grade. It has excellent water-resistance, it is hard to be emulsified and washout when contacting water. It has excellent rust-proof ability to prevent metal from rusting, good mechanical stability and excellent adhesiveness to ensure no softening and loss in use.
Helpful?
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· 7 years ago
is this a set or just 1?
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duwayne4· 6 years ago
Just one.
Helpful?
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UltraTowExpert10· 7 years ago
This trailer hub is sold individually.
Helpful?
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· 3 months ago
What size bearing buddy will fit?
1 answer-
UltraTowExpert12· 3 months ago
The bearing buddy size required for this hub is 1.980".
Helpful?
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· 6 months ago
Is this for both sides or do I need two different products?
1 answer-
UltraTowExpert12· 6 months ago
These hubs can be used on either side.
Helpful?
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· 7 months ago
What is the length of the studs? I have an aluminum custom rim and need long studs
1 answer-
UltraTowExpert12· 7 months ago
The studs measures 1" long with a 5/8" diameter.
Helpful?
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· 9 months ago
What diameter will the hub fit?
1 answer-
UltraTowExpert12· 9 months ago
This hub is designed to fit a 1.72" spindle. The bearing size is 1-1/16" OD and 1-3/8" ID.
Helpful?
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· 10 months ago
Where is hub made at
1 answer-
UltraTowExpert12· 9 months ago
This hub is manufactured to our specifications in China.
Helpful?
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· a year ago
Are they 14 inch tires
1 answer-
UltraTowExpert12· a year ago
The overall diameter of this hub is 6-3/8".
Helpful?
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· a year ago
What are the bearing sizes and are they pre greased ?
1 answer-
UltraTowExpert12· a year ago
This hub has pre-greased bearings. The inner bearing is 1-3/8", the outer bearing is 1-1/16".
Helpful?
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· 2 years ago
What size castle nut is needed for this assembly?
1 answer-
UltraTowExpert7· 2 years ago
This hub assembly will need a 1" castle nut.
Helpful?
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Warranty
Manufacturer's Warranty
2 year limited warranty
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$89.99Reg $99.99Save $10.00Order today to get this price.
Shipping:
Free shipping (lower 48 states) - Available now
$19.99 Same DayStore Pickup:
18 in stock at Fredericksburg VA - Pickup in under 1 hr
Item # 5780311
$12.99Shipping:
Backordered: Order now to reserve yours -
Estimated to ship 06/30/26
$19.99 Same DayStore Pickup:
6 in stock at Fredericksburg VA - Pickup in under 1 hr
- $89.99Reg $99.99Save $10.00
Order today to get this price.
Shipping:
Free shipping (lower 48 states) - Available now
$19.99 Same DayStore Pickup:
11 in stock at Fredericksburg VA - Pickup in under 1 hr
- $71.99Reg $79.99Save $8.00
Order today to get this price.
Shipping:
Free shipping (lower 48 states) - Available now
$19.99 Same DayStore Pickup:
6 in stock at Fredericksburg VA - Pickup in under 1 hr
Specifications
5
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5
4
4.5 in
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4.5 in
4 in
1,750 lb
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1,350 lb
1,350 lb
1.375 in
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1.25 in
1.25 in
1-3/8 in
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1-1/16 in
1-1/16 in
1-1/16 in
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1-1/16 in
1-1/16 in
1.72 in
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1.5 in
1.5 in
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2
-
-
-
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1.5 in
1.5 in
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Ultra-Tow XTP Ultra-Pack Trailer Hub, 5 on 4-1/2in., 1750-Lb. Capacity
Item # 572061
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