1. Trailer Hitch Ball
  2. Curt
  3. Trailer Hitch Ball
  4. 2-5/16 Inch Diameter Ball
  5. 1 Inch Diameter Shank
  6. Standard Ball
2-5/16" Hitch Ball - 1" Diameter x 2-1/8" Long Shank - Chrome - 7,500 lbs

2-5/16" Hitch Ball - 1" Diameter x 2-1/8" Long Shank - Chrome - 7,500 lbs

Item # C40005
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Trailer Hitch Ball
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Curt Trailer Hitch Ball - C40005
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Durable chrome ball has a 1" diameter x 2-1/8" long shank with fine threads for a superior grip. The nickel chrome finish provides corrosion-resistance. Lowest Prices for the best trailer hitch ball from Curt. 2-5/16" Hitch Ball - 1" Diameter x 2-1/8" Long Shank - Chrome - 7,500 lbs part number C40005 can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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  • Q & A (13)
  • Videos (1)
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Curt Trailer Hitch Ball - C40005

  • Trailer Hitch Ball
  • 2-5/16 Inch Diameter Ball
  • 1 Inch Diameter Shank
  • Standard Ball
  • 7500 lbs GTW
  • Class III
  • Chrome-Plated Steel
  • 2-1/8 Inch Shank Length
  • Curt

Durable chrome ball has a 1" diameter x 2-1/8" long shank with fine threads for a superior grip. The nickel chrome finish provides corrosion-resistance.


Features:

  • Hitch ball provides a connection point for your trailer's coupler
  • Durable, corrosion-resistant nickel chrome finish
  • Fine threads provide tight, strong grip
  • Wrench flats allow for easy installation


Specs:

  • Ball diameter: 2-5/16"
  • Shank dimensions: 1" diameter x 2-1/8" long
  • Fits ball mount platforms that are at least 3/8" thick
  • Weight capacity: 7,500 lbs
  • 1-Year limited warranty


40005 Curt Trailer Hitch Ball for 2-5/16 Inch Couplers - Chrome





Video of 2-5/16" Hitch Ball - 1" Diameter x 2-1/8" Long Shank - Chrome - 7,500 lbs

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Curt Hitch Ball - Trailer Hitch Ball - C40005 Review

Today we're going to be taking a look at the Curt 2 5/16 inch hitch ball. This hitch ball provides a connection point for your trailer's coupler. It's a steel construction with a durable, corrosion-resistant nickel chrome finish. It's going to feature fine threads that provide tight, strong grip and it's going to have the wrench flats on it. Right here it's got the flat sides on the flat form. That allows for an easier installation.

It's also going to come with your split lock washer and the mounting nut. In the manufacture specifications those are going to be on a tag that comes on the ball. That's where you're going to find the torque rating for this particular hitch ball. Again the diameter is 2 5/16 of an inch. It's going to have a weight capacity of 7,500 lbs. shank diameter is going to measure 1 inch.

Shank length is 2 1/8 of an inch and this is designed to fit on a ball mount that has a draw bar or a platform thickness of at least 3/8 of an inch. You place this through the ball hole. On the underside you'd put the split lock washer and then you would place on the nut. Get that all the way tightened down and torqued to the specifications listed by the manufacturer. That's going to do it for today's look at the Curt 2 5/16 inch hitch ball.


Customer Reviews

2-5/16" Hitch Ball - 1" Diameter x 2-1/8" Long Shank - Chrome - 7,500 lbs - C40005

Average Customer Rating:  4.9 out of 5 stars   (2530 Customer Reviews)

Durable chrome ball has a 1" diameter x 2-1/8" long shank with fine threads for a superior grip. The nickel chrome finish provides corrosion-resistance.

- C40005
by:

Looks like a good quality tow ball. I'll never be able to tell you though. I cut the shank off to build my own trailer coupler lock for cheaper than a purpose built coupler lock. This ball plus the e98883 coupler pin lock makes my trailers secure in my yard as well as anywhere we go. Trailer can't be towed away if there is already a hitch ball locked in the coupler and there a only enough shank left to grab the ball but not enough left to hook it to a new hitch reciever. And by buying enough keyed-alike coupler pin locks, one key fits all trailers unlike previous setups I tried where each coupler lock had its own key.



- C40005
by:

Fastest way to get your hitch connector is with etrailer.



- C40005
by:

This is a 2-5/16” trailer ball. It’s the smaller shank diameter. All installed with no issues.



- C40005
by:

Item was delivered as promised. Item was in excellent condition and installation was easy. Customer service was excellent, as usual.



- C40005
by:

Fit the hitch and trailer perfectly. Tightening down to the proper spec was a little difficult with hand tools, but managed to make it work.



- C40005
by:

Trailer ball came exactly as described fast shipping was kept very informed of order status



- C40005
by:

The ball is mated perfectly (rating 7500 lbs) to the rest of my hitch system - Meriah found it for me looking thru her in stock products



- C40005
by:

About a simple as it gets, installed in seconds with our 3/4" iimpact gun.



- C40005
by:

Excellent service and fast shipping. I called for some technicle advice and was helped quickly.



- C40005
by:

Bigger shiny.



- C40005
by:

Excellent product



- C40005
by:

Works great as expected.



- C40005
by:

Fast friendly service! Second time I have used them and once again got my part within a week of ordering!



- C40005
by:

Purchased for a prototype part. It exceeds my expectations and got here fast!



- C40005
by:

It performed as expected



- C40005
by:

Quality.



- C40005
by:



- C40005
by:



- C40005
by:

Product was in perfect shape and delivered on time. All great.



- C40005
by:



- C40005
by:

Shiny.



- C40005
by:

amazing fast shipping, thank you



- C40005
by:

Item shipped fast. Seems solid and well made.



- C40005
by:



- C40005
by:


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Ask the Experts about this Curt Trailer Hitch Ball

  • What Size Wrench is Needed to Install Hitch Ball # 63840
    When installing the hitch ball part # 63840 you need to use a 2 inch wrench on the wrench flats of the ball and a 1-7/8 inch wrench for the nut on the shank.
    view full answer...
  • Available 2-5/16-Inch Hitch Balls
    We offer many 2-5/16-inch hitch balls that you can see by clicking on the included link. First, you will want to select the required shank diameter to match the hole size on your ball mount. The 2-5/16-inch hitch balls we carry come in the following shank diameters: 1-inch 1-1/4-inch 1-3/8-inch 1-1/2-inch 2-inch You also need to select a ball with the appropriate length of shank so that it will fit your ball mount and allow enough room to install the lock washer and nut. Our...
    view full answer...
  • Shank With 5 Inch Drop Compatible With Reese Steadi-Flex RP66558
    There are shanks with the drop you need that is compatible with the Reese Steadi-Flex Weight Distribution System with Sway Control # RP66558. Weight distribution shanks are interchangeable so what you can use is the Curt Weight Distribution Shank # C17121. This shank has a maximum of 5 inches of drop with a trunnion bar system like the Steadi-Flex so it's exactly what you need. Additionally, the Steadi-Flex is compatible with your 2 x 6 frame and top-mounted coupler, so the only...
    view full answer...
  • Ball Mounts For Equal-i-zer Extended Weight Distribution 4" Drop Shank
    The Equal-i-zer Weight Dist Shank # EQ90-02-4600 is designed to work with a weight distribution hitch head like # EQ90-02-1000. If this is what you are needing I would need to know what weight rating you need for your system. If you are wanting to use it as an adjustable ball mount the Ball Mount Adapter # BA-1 does share the same 3/4" bolt holes spaced 1-1/4" apart. It will require a hitch ball that has a 1" shank. 1-7/8" Ball # 19260 2" Ball # 40038 2-5/16" Hitch Ball # C40005 Another...
    view full answer...
  • Differences Between The Curt C13171 and Curt C13395 For A 2020 Jeep Cherokee
    The Curt Trailer Hitch Receiver # C13171 and the Curt Trailer Hitch Receiver # C13395 have a few big differences. The main one is that the # C13171 is only confirmed to fit Jeep Cherokee model years 2014 - 2019 so you wouldn't be able to use it on your 2020 Jeep Cherokee. Another main difference is the # C13171 has a maximum gross trailer weight capacity of 5,000lbs (maximum GTW when used with weight distribution of 6,000lbs) and a maximum tongue weight capacity of 750lbs (maximum TW...
    view full answer...
  • What is Included with the Curt Trailer Hitch Receiver Part # 13390
    The Curt Trailer Hitch Receiver part # 13390 comes with everything you will need for installation except the tools including 4 carriage bolts, 4 hole spacers, 4 hex nuts, and 2 firewire bolt leaders. In order to install this hitch you will need a 10/19 mm socket, 8" extension, ratchet, torque wrench, 17/32" drill bit, rotary tool, and file. If you will be doing any towing with the hitch then you will also need a wiring harness, ball mount, and hitch ball. For a wiring harness I recommend...
    view full answer...
  • Recommended 6 Inch Drop Ball Mount with Extended Length for a 2 Inch Trailer Hitch Receiver
    I recommend using the Curt Ball Mount part # D-28 which has a 6" drop. We do not have a 2" ball mount that offers exactly 6-1/2" of drop with an extended shank but since the vehicle will squat a bit while attached to the trailer, the 1/2" difference will not be an issue for you. This ball mount slides into a 2" receiver tube opening and works with hitch balls that have a 1" diameter shank. If you need a hitch ball I recommend using part # C40002 for 1-7/8", part # C40004 for 2", or part...
    view full answer...
    Image 1 for
  • Sway Control For Hitch Not Rated For Use With Weight Distribution
    Good question, and the hitch on your Audi is not rated for use with weight distribution, so what I recommend instead is a friction sway control set up. This will provide you with better control over your trailer to give you a much more controlled, steady, and comfortable towing experience. The way it works is the ball plate from the kit attaches to your trailer frame, and the other end attaches to a tab on a ball mount, like in the accompanying photo. Just keep in mind this will only...
    view full answer...
    Image 1 for
  • Which Hitch Balls Work with the Draw-Tite Ball Mount Part # 2923
    Any trailer hitch ball that has a 1" diameter and at least 2-1/8" long shank will work with the Draw-Tite Ball Mount part # 2923. For a 1-7/8" hitch ball I recommend part # C40002, part # C40004 for 2", or part # C40005 for 2-5/16". I have also attached a selection of our hitch balls that will work with the above ball mount for you. To protect your ball mount/hitch ball, I recommend using the Trailer Hitch Receiver Lock part # e98880.
    view full answer...
  • When Should You Use A Weight Distribution Hitch
    Even if you are within the towing limits set by your equipment, vehicle manufacturer, etc., there are other indicators that you may benefit from a weight distribution hitch, including: Your trailer weight (GTW) is more than 50% of your vehicle's weight (GVWR) The rear of your tow vehicle sags when the trailer is hooked up You experience trailer sway Your tow vehicle's headlights point upward You find it difficult to steer or stop your rig You want to tow to the highest capacity...
    view full answer...
  • Recommended Ball Mount To Replace Curt C45901 With Missing Parts
    I reached out to my contact at Curt and while I have a complete replacement option for you, the ball mount section of the # C45901 is not available separately. Since there is no other ball mount option of the same style that will fit your shank, you will need to purchase another # C45901. In addition you will need a hitch ball with a 1" shank, the 1-7/8" # C40002, 2" # 40083, or 2-5/16" # C40005. I included a video of the # C45901 for you to take a look at.
    view full answer...
  • Recommended Weight Distribution System for a 3000 lbs Boat Trailer with 200 lbs. Tongue Weight
    If you have an aluminum boat trailer frame, I suggest checking with the manufacturer to verify that a weight distribution system is a compatible solution. If so, then you would begin with installing a Equal-i-zer Pole-Tongue Adapter # EQ95-01-5950, since your boat trailer has a straight tongue. For your weight distribution system, I recommend the Fastway e2 Weight Distribution w/ 2-Point Sway Control # FA92-00-0450. This is a quality and cost effective system that has no-drill, clamp-on...
    view full answer...
  • Shorter Tow Ball for Travel Trailer
    I recommend the Curt 2-5/16" hitch ball item # C40005. It has a 1" diameter x 2-1/8" long shank, with 0" of shank rise, and is rated at 7,500 lbs.
    view full answer...

Do you have a question about this Trailer Hitch Ball?




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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Cole B
Installed by:
Cole B
Employee Chelsea B
Written by:
Chelsea B
Employee Wilson B
Updated by:
Wilson B
Employee Isabelle B
Updated by:
Isabelle B

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