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Universal Part
UPC: 612314009008

Adjustable Tri-Ball Mount (2" Shank, 1-7/8", 2" & 2-5/16" Balls) #45799

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  • Features three welded trailer balls on an adjustable shank
  • Fits 1-7/8", 2" or 2-5/16" couplers
  • Mounts on trailer hitches with a 2" x 2" receiver tube opening
  • Adjustable height allows for precise trailer leveling
  • Shank can be flipped for a max drop or rise of 5-3/4"
  • Protected by a durable powder coat finish
  • Permanently attached trailer balls cannot be loosened or stolen
  • Trailer balls feature a polished chrome-plated finish
  • 5/8" diameter pins & clips provide security and easy adjustment
  • Limited lifetime warranty (one-year finish, one-year parts)


  • Includes tri-ball head #45800, adjustable shank #45059, tube mount #45802 and three pins & clips

Guides & Install Sheets

Product Videos

  • Product Videos CURT Ball Mounts Introduction
  • Product Videos How to Choose a Ball Mount and Trailer Ball - CURT
  • Product Videos How to Determine the Proper Rise or Drop of a Ball Mount - CURT


  • Ball 1 Diameter and Capacity1-7/8 IN - 6,000 LB
  • Ball 2 Diameter and Capacity2 IN - 7,500 LB
  • Ball 3 Diameter and Capacity2-5/16 IN - 10,000 LB
  • Ball Diameter1-7/8 IN or 2 IN or 2-5/16 IN
  • FinishGloss Black Powder Coat
  • Gross Trailer Weight (GTW)10,000 LB
  • GTW/TW Ball 16,000 LB / 600 LB
  • GTW/TW Ball 27,500 LB / 750 LB
  • GTW/TW Ball 310,000 LB / 1,000 LB
  • Hub WarehouseD25
  • Length16 IN
  • Master Case Qty1
  • MaterialBlank
  • Max Drop5-3/4 IN
  • Max Rise5-3/4 IN
  • Pallet Qty0.000
  • Parcel AllowedYes
  • Part TypeAdjustable Tri-Ball Mount
  • Product Weight45.410
  • Receiver Tube Size2 IN
  • Shank Length16 IN
  • Shipping Weight45.410
  • Tongue Weight (TW)1,000 LB
  • WarrantyLimited Lifetime Warranty (One-Year Finish, One-Year Parts)

WARNING: Cancer and Reproductive Harm -

If you own multiple trailers or frequently tow a variety of loads, you know how much time and money are spent tailoring your towing system to each and every individual trailer. There is nothing more inconvenient than switching back and forth between a few different ball mounts and trying to remember which mount fits with which trailer. A CURT adjustable ball mount is your multipurpose towing solution.

This CURT adjustable ball mount has a shank size of 2" x 2" and features three different trailer ball sizes to accommodate all standard coupler sizes: 1-7/8", 2" and 2-5/16". The 1-7/8" trailer ball offers a gross trailer weight capacity of 6,000 lbs. and a tongue weight capacity of 600 lbs. The 2" trailer ball has a GTW capacity of 7,500 lbs. and a TW capacity of 750 lbs., and the 2-5/16" ball offers 10,000 lbs. GTW and 1,000 lbs. TW. This allows you to easily tow a variety of trailers and to ensure that each one tows smoothly and securely.

This tri-ball ball mount also features an adjustable shank assembly with multiple mounting holes for varying ball heights. Each trailer ball can be raised to a maximum of 5-3/4" rise or lowered to a maximum of 5-3/4" drop, allowing you to make your trailer completely level in any towing situation. It includes three 5/8" hitch pins for quick and secure installation, and the adjustable shank can also be used with our multipurpose ball mount attachment #45008 for even more versatility. All CURT adjustable ball mounts are made with sturdy steel construction and come with a durable powder coat finish for long-lasting rust, scratch and UV resistance.

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  1. 100%


    #45799 REview

    Just purchased new 10k rated boat trailer. Needed a hitch that I could adjust up and yours fit the bill perfectly.
    Also purchased locking pins (4) for the unit as well as the 1/4" pin for the new coupler

  2. 60%


    Wrong Choice

    Make sure you take note of the 16" from pin opening to ball. This extends the ball quite a bit from the vehicle and in my case the chains from my boat trailer do not reach the truck. Not only do the chains not reach but it is more awkward sticking out that far in my opinion (wiring harness might not reach, easier to trip on). For some reason they only offer the 1 pin location, not 2 like other products. The product isn't faulty, just better options. I wanted the 3 ball mount and this was the only choice and now I am disappointed I selected this product.

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