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Rigid Hitch Incorporated Trailer Hub Kit (BT-150-F) 5 Bolt on 4-1/2 Inch Circle - Fits 1' and 1-1/16' Spindle

Free shipping on orders over $29.99

$31.67

$ 15 .99 $15.99

In Stock

About this item

  • Complete assembly with bearings, seal, dust cap, cotter pin and lug nuts
  • Fits both 1" and 1-1/16" diameter straight spindles
  • Hub measures 4-1/4 inches tall (through center of hub)
  • 2,000 lbs capacity - 1/2-20 thread - 5 bolt on 4-1/2 inch bolt circle



Product Description

Rigid Hitch Inc.

Our company opened for business in 1957 as a manufacturer of trailer hitches and has grown to become an ISO 9001:2015 certified company. Rigid Hitch is a family-owned manufacturer and warehouse distributor of trailer hitches, towing accessories, trailer parts, and truck accessories. Our corporate headquarters and main warehouse are located in Burnsville, Minnesota. We supply products to many businesses throughout the country including auto parts stores, hitch installation & welding shops, auto dealers, rental stores, and direct to consumer.

We are constantly adding new products online to keep up with our customers’ towing needs. Since finding the right item can be confusing at times, we have an amazing team of workers. Our employees get training throughout the year. Many employees on our CS team have extensive knowledge and have been with our company for several years. After placing your order, our warehouse team does their stuff which lets us get orders shipped out as soon as possible. In most cases orders are shipped the same day they are received. We look forward to helping you find what you need for your towing application!

5-bolt on 4-1/2" trailer hub

5-Bolt on 4-1/2" Bolt Circle Trailer Hub Assembly

This kit includes two sets of bearings. One set for trailers that are equipped with 1" straight spindles, or the other set for 1-1/16" straight spindles.

Bearing part numbers are (2) L44643 1" Inside diameter, (2) L44649 1-1/16" Inside diameter.

1.50 inch or 1.25 inch Grease Seals

Grease Seals

We also include two different size seals - 1.50" inside diameter or 1.25" inside diameter. Both seals are double lipped, spring loaded.

Make sure to measure your spindle surface to verify which one of the two you will be installing.

Trailer Hub Dimensions

Trailer Hub Dimensions

This hub measures 4-1/4 inches tall, which is a very common size on the market.

If your current hub measures 3-1/2" (known as the shorty) please search for Amazon ASIN/listing number B099P2BTND.

Pressed In Races

Races

The front and rear races come preinstalled for ease of installation, saving you time and money!


Andrew
2025-08-09 17:49:35
Fit my 4x8 utility trailer as a replacement for a bearing that went bad. Install was straight forward, I ended up using the larger bearing and seal. Parts appear to be good quality and price was very fair. I installed greasable dust cover to make maintenance easier.
Ti-Ni
2025-07-27 13:06:57
I measured my spindle and the hub I was replacing so I knew the dimensions were correct. Really nice that it came bearings and grease seals for 1" and 1-1/16" spindles. Perfect fit and great product.
Naomi
2025-05-05 15:25:09
Ordered for my dad he had no complaints
Customer
2025-05-03 13:05:44
Works fine
Dan Bailey
2025-04-15 16:48:26
Bought this set for a small 14' double wide jon boat trailer....materials seem to be worth the $$...nothing fell apart during install, no problems with install. Trailer never goes down highway or more than 10 miles in any direction really-so this kit was perfect for my needs at the price point. WOULD PURCHASE AGAIN
Lewis Wertley
2025-03-05 18:33:42
perfect fit.
Customer
2025-03-03 16:19:09
Bought a 1992 calkins trailer with my new to me boat from the same year.... I suspect 30+ years of neglect and disuse had taken their toll... both wheels when jacked off the ground had play and the grease that was present resembled forbidden pistachio pudding. Bearing races and rollers were heavily pitted. Option 1 was to replace bearings and races and use the same hubs, but these hubs did not have notches to make hammering out the races 'easy.' Saw these on Amazon, and ordered. I was able to do both sides in the dark, and in below freezing temperatures in about an hour total. Grab some 1.980 bearing buddies while you're in there. Highly recommend.
Edwin Combs
2025-02-19 12:11:10
Easy to install after I refreshed my memory with a YouTube video.
Mr. N
2025-02-18 18:44:03
Did not fit for my application, hassle free return, very nice set up hubs. Wish they would of worked for me.
Customer
2025-01-23 13:27:17
High quality. Tao sets of beatings as indicated. For straight shaft. All complete. Dimensions as per drawing provided are exact. Thank you. Good price.
Mike winters
2025-01-17 15:37:14
Used these on my boat trailer. No issues.
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