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  1. Trailer Hitch Ball
  2. CURT
  3. Trailer Hitch Ball
  4. 2-5/16 Inch Diameter Ball
  5. 1-1/4 Inch Diameter Shank
  6. Standard Ball
2-5/16" Hitch Ball - 1-1/4" Diameter x 2-3/4" Long Shank - Chrome - 20,000 lbs

2-5/16" Hitch Ball - 1-1/4" Diameter x 2-3/4" Long Shank - Chrome - 20,000 lbs

Item # C40008
Our Price: $32.71
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Trailer Hitch Ball
Shipping Weight: 4 lbs
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Durable steel ball has a 1-1/4" diameter x 2-3/4" long shank. Chrome finish resists corrosion. Fine threads provide strong grip. Lock washer and nut included. Great Prices for the best trailer hitch ball from CURT. 2-5/16" Hitch Ball - 1-1/4" Diameter x 2-3/4" Long Shank - Chrome - 20,000 lbs part number C40008 can be ordered online at or call 1-800-940-8924 for expert service.
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CURT Trailer Hitch Ball - C40008

  • Trailer Hitch Ball
  • 2-5/16 Inch Diameter Ball
  • 1-1/4 Inch Diameter Shank
  • Standard Ball
  • 20000 lbs GTW
  • Class IV
  • Class V
  • Chrome-Plated Steel
  • CURT
  • 2-3/4 Inch Shank Length

Durable steel ball has a 1-1/4" diameter x 2-3/4" long shank. Chrome finish resists corrosion. Fine threads provide strong grip. Lock washer and nut included.


  • Hitch ball provides a connection point for your trailer's coupler
  • Fine threads provide exceptionally tight, strong grip
  • Heat-treated steel is durable
  • Corrosion-resistant chrome finish
  • Lock washer and nut included


  • Ball diameter: 2-5/16"
  • Shank dimensions: 1-1/4" diameter x 2-3/4" long
  • Weight capacity: 20,000 lbs
  • Fits ball mount platforms at least 3/8" thick
  • 1-Year limited warranty

40008 Curt 2-5/16" Hitch Ball with Medium Shank - 20,000 lbs GTW - Chrome

Video of 2-5/16" Hitch Ball - 1-1/4" Diameter x 2-3/4" Long Shank - Chrome - 20,000 lbs

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

Video Transcript for Curt Chrome 2-5/16 Inch Hitch Ball Review

Today, we're gonna be taking a look at the CURT Trailer Ball. So this one's gonna be a 2 5/16 inch ball. It's gonna have a capacity of 20,000 pounds. So we do want to match this up with a ball mount that's gonna be able to carry at least that much. So with this ball mount, it's about 21,000 pounds. So we are limiting our ball mount by 1,000, but that's not necessarily a huge deal.

But if you did need to grab a ball mount, just make sure it kinda lines up, 'cause you do need to piece these things together just to make sure that they're all gonna work together. Might as well not limit yourself from right off the bat. Another thing to think about is which ball mount you're gonna pick, but also the thickness. So we wanna make sure that we're gonna have a platform that's at least 3 1/8 of an inch thick. So this one's totally fine.

And then looking down at the shank, we do need to make sure that the hole is going to be an inch and 1/4 in diameter, because that is the diameter of the shank of the ball. Let me take this off real quick. There we go. So as you can see up top there's hardly any play. We really want to line this up and make sure it's the same size, just because if it's any bigger, the shank, it's not going to put the ball mount and any smaller, there's going to be a lot more play.

And we really don't want that. Especially with these really heavy duty balls. We wanna make sure they are nice and snug in there just so we don't have any issues whenever we go down the road. So if you we're to upgrade with a trailer ball, I guess you could get one that's forged and machined out of one single piece of steel. This one's made of steel.

It's gonna be plenty strong, but it has a Chrome finish. The other one's just going to be a little bit stronger. But I really don't think that really matters a whole lot. One thing I would pick up is some grease for this just because there's a lot of grinding action that goes on. And with that grease, we carry here at etrailer, it's just gonna keep this finish looking nice for a little bit longer. When it comes to trailer balls, there's some that are gonna give you an inch or two in rise, so the ball itself will give you a rise. If that's something that you're interested in, you can get that here at etrailer. But this is just your standard 2 5/16 inch ball. And that's basically it for our look at the CURT 2 5/16 inch Trailer Ball..

Customer Satisfaction Score:

Customer Reviews

2-5/16" Hitch Ball - 1-1/4" Diameter x 2-3/4" Long Shank - Chrome - 20,000 lbs - C40008

Average Customer Rating:  4.9 out of 5 stars   (3486 Customer Reviews)

Durable steel ball has a 1-1/4" diameter x 2-3/4" long shank. Chrome finish resists corrosion. Fine threads provide strong grip. Lock washer and nut included.


The Curt ball hitch worked perfectly for my needs. I installed it on a Blue Ox weight distributing hitch that came with an unusually low ball causing my trailer coupler to contact the hitch head. This ball is a bit over 1/2" taller, which solved the problem. I chose this particular one because the flange that seats against the hitch looked the largest out of the offerings, so I figured it would provide some additional strength. Great ball that yielded great results for me.


Shipper lost the order but etrailer shipped me a replacement. Great service


It was one of the few things that gave me enough drop to hook my Truck up to my small utility trailer! hook my Tahoe up to my small utility trailer


This ball mount has served it purpose well. I purchased a new travel trailer that is heavy enough to require a weight distribution hitch when using the factory installed Class III hitch on our Dodge RAM 2500. I decided to upgrade to a Class V hitch combined with this ball mount to take delivery of the TT in order to defer decisions about a WD hitch until the actual load conditions were known. The hour trip home with this setup worked very well. Once the trailer was outfitted I was able to determine the actual tongue weight of the loaded trailer and I decided to purchase an appropriately sized Reese Straight Line WD hitch. However, this ball mount comes in handy for moving the trailer short distances without hassling with the WD system. The purchase experience through was first rate.


No one had a 2 5/16 inch ball in 14000 tow weight. As we had to move our trailer and as I called numerous dealers and was told not available, I reached out to etrailer. They also didn't have it but suggested I go larger in the ball so long as it fit the tow hitch and the shank. It did I'm still using it and am very happy with the product and the quick service and turn around with my order.


Nicely plated and fits well. Without flat spots on the base to hold, I was afraid the ball would slip and turn while I tightened the nut, but I had no problem installing it on the Curt ballmount. It has great capacity, and I have no worries about it safely pulling my boat.

Larry P.


Works well. Has stayed tight and does the job to haul a 4 ton boat and trailer


Well constructed


product installed

simple design
and easy use makes this a winner in my books.


Fit just like the original ones and work great!


Great product, gives me total confidence in my ability to pull my car trailer. etrailer is a great company to deal with.

Aaron C.


So far I have pulled my trailer over 10k miles with my ‘16 Ram 2500. The hitch is easy to use and really helped with sway even when empty. Best choice I could have made for my trailer.


I ordered a Class V ball and ball mount with pins. This is for the 2.5 inch heavy duty receiver. I needed a set-up for pulling an emergency services boat that weighs over 18,000 lbs.

I was able to get a set-up rated at 20,000 lbs, in stock. Shipping was fast and quality looks good.


Good, solid product. We tow our 15,000 lb boat behind our Ford F-250 using it. You do need a pretty long torque wrench to tighten the nut to specs, and because there are no flats on the ball end, you have little choice but to damage the chrome plating in the throat a big with a pipe wrench as you tighten. But no big deal.


I received everything that I requested in a short time even with the free shipping. The ball mount and the balls I requested and the 2-5/16th ball and the 2" ball were just what I needed. the ball cap for the 2-5/16 ball fit perfect the ball cap for the 2" was really just made for the smaller ball. I would recommend that they make a ball cap for just the 2" ball. Got it to fit but not that well. I will need breaks for my boat trailer after this season and I plan on using etrailer for those parts. will need to call them before I make purchase as Im not sure how to size them up.


Great Ball, works perfectly. The nut is BIG so make sure you have a big enough socket to tighten this monkey up! Put it on the hitch, then put the hitch in your receiver sideways so you can get better leverage to tighten the nut.


This hitch ball looks good - the chrome finish looks too good to hook a trailer up to and it meets the weight ratings I was looking for, which is clearly stamped on the top of the ball. Now I just have to torque it up to the 450 ft lb spec required as stated on the attached tag and I will be good to go.


We always call etrailer, first, whenever we need anything for our Motor home or our trailer. They are so knowledgeable and supportive, it takes all the worry out of ordering wrong. They even helped us with ordering Thule carrier and cross bars!

Thank You!!!!


We liked the results of how well the Reese weight distribution and sway control system so much that we went ahead and ordered the parts needed to set up a second vehicle to tow the same trailer. Reese and have made preparing for and towing the race car hauler a breeze! We couldn't ask for a better combination...


Carol, when I have a chance to install the hitch I will. I am waiting on delivery if my hitch. Can I ask you to confirm the nut size on the Curt 2 5/16 the ball. I think it is 1 7/8" but cannot find it anywhere on your site. I called and your support person thought 1 13/16, but was not sure. Tks!


This hitch ball is stout!! It’s heavy and dense and made very well. This is the second one I have purchased, as this one will be installed on a lower drop Curt hitch.


Just as described. Its a Chrome 2-5/16 ball that works well with the Curt C45340 hitch.


Looks good fast Shipping


Great folks to deal with, good products at good prices. Free shipping was a sell point because of how heavy the order was. ( Ordered the cast steel hitch with this ball as well)


Nice chrome trailer ball. Installed easily on the new hitch.


For the price I could pass it up.working well towing a 16k dump trailer.

William B.


Better than expected


Heavy duty and great price and free shipping can’t beat that thanks Lori

Show More Reviews

See what our Experts say about this CURT Trailer Hitch Ball

  • Recommended Socket Size For Curt Ball Mount C40008
    The socket size needed to install the Curt hitch ball # C40008 would be 1-13/16 inches. The torque required for tightening the nut is 450 ft lbs. If you do not have a torque wrench rated up to 450 foot pounds in which case you'll never really measure it at 450. When tightening the ball you want to make sure you get the lock washer, so that it's completely flat. One way to make it easier on you is to put the ball mount in your hitch receiver sideways so the hole is vertical. Then install...
    view full answer...
  • Socket or Wrench Size Needed for Curt Ball Mount C40008
    The wrench size needed to install the Curt hitch ball part # C40008 that you referenced would be 1-13/16 inches. The torque required for tightening the nut is 450 ft lbs...
    view full answer...
  • How Do You Tighten a Hitch Ball that Doesn't have Wrench Flats
    If you have a bench vise you can put a cloth around the ball and use the vise to hold it so you can torque the nut to spec on ball # C40008. Like you said this ball doesn't have wrench flats so there isn't really a better way than using a vise. If you do not already have a ball you could use # 63840 instead which does have wrench flats.
    view full answer...
  • Can Ball of Curt Pintle Hook 2-5/16 Ball for 2-1/2 Hitches - 20,000 lbs Part #C48012 be Removed
    The ball of the # C48012 can be removed. The replacement ball for this ball mount/pintle is the part # C40008 which has a 1-1/4 inch shank diameter. The tongue weight capacity of this 2,000 lbs.
    view full answer...
  • How to Torque Hitch Ball When Installing into Ball Mount
    We don't have a combo of the Curt Hitch Ball # C40008 and Curt Ball Mount # C45340. The ball mount is extremely heavy-duty, rated up to 17,000 pounds. I think it's safe to assume you don't have a torque wrench rated up to 450 foot pounds just laying around. In which case you'll never really measure it at 450. When tightening the ball you want to make sure you get the lock washer so that it's completely flat. One way to help you do this is to put the ball mount in your hitch receiver...
    view full answer...
  • Solution for Needing Curt Ball Mount and Hitch Ball in 1 inch Drop Position Over 1 inch Rise
    Since we do not have a version of the # C45331 with the setup in the rise position instead of the drop position your best option would be to remove the ball and reinstall it in the rise position or go with the part # C45340 and # C40008 which you could then attach to the ball mount in the rise position. The demand for ball mounts in the drop position is much more than in the rise position as tow vehicles generally are getting taller and taller while trailers mainly are staying same height....
    view full answer...
  • Is 10k Curt MV Weight Distribution Too Wide For V-Nose Trailer
    The 10,000 lb Curt MV Weight Distribution System # C17052 isn't too wide for your trailer but it may be too long. A lot of times with V-nose trailers what ends up happening is you have to install Chain Hangers for Curt Weight Distribution Systems - Bolt On # C17005 on your trailer frame. The arms of the # C17052 are 31-1/2" long so you'll need about that much distance on your frame rearwards to use the system, otherwise you'll need to use the chain hangers. Then for a hitch ball use part...
    view full answer...
  • Can the Ball Mount # C45340 be Ordered with the Curt Hitch Ball # C40008 Already Installed
    I do have a solution for you, but we do not install parts like the Curt Heavy Duty Forged Ball Mount # C45340 and 2-5/16" Hitch Ball # C40008 before shipping them out. Any ball mounts that come with a hitch ball installed come like that directly from the manufacturer. If you do not need the full 17,000 lb capacity of the ball mount # C45340 that you referenced then you can use the Curt Heavy Duty Forged Ball Mount # C45331 which is essentially the same exact ball mount with a 2-5/16" hitch...
    view full answer...
  • Weight Distribution for an RV on Ford F-550 Chassis Towing 9,000 Pound Car Trailer
    The Ford F-550 chassis is up in the medium duty range but with the weight of the RV body on it and the tongue weight of the trailer at 1,000 pounds, you would likely still benefit from weight distribution. A good rule to go by is if the loaded trailer gross weight is at least 50 percent of the vehicle weight, or if the vehicle sags at the back when connected to a trailer, weight distribution is a good idea. To choose a weight distribution system you will need to go by the total tongue...
    view full answer...
  • Which Ball Mount to Provide Exactly a 3-1/2 Inch Drop
    When you do the calculations to determine the rise or drop of ball mount you need, you don't need the ball mount to be absolutely exact to the rise/drop you're needing. As long as you're within an inch to an inch and a half of level, plus or minus you'll be fine. If you're wanting a 3-1/2 inch drop, going with the Draw-Tite # 40331 with a 4 inch drop would put you within 1/2 inch of level, which is certainly close enough. For a 2-5/16 inch ball, you can use # 19286 if a 12K capacity will...
    view full answer...
  • How Long Should Hitch Ball Shank Be to Fit Curt Forged Ball Mount # C45458
    The 2-1/2 inch shank length on B&W ball # BWHB94004 might be just a bit too short for ball mount # C45458. The recommended ball, # C40008, has a shank length of 2-3/4 inches. Basically the shank has to be long enough for the nut to thread all the way on with about 3 or more threads sticking out past the bottom of the nut.
    view full answer...
  • Recommended Weight Distribution System for a 2020 Gulf Stream Kingsport 248BH
    The weight distribution system I recommend for a 2020 Gulf Stream Kingsport 248BH is the Curt TruTrack Weight Distribution System part # C17499 which will have you covered while empty or fully loaded. This system is a great option with integrated sway control so not only do you get the reduced sag/squat you also get better control of the trailer on the highway. The best part of all is that it's all bolt-on and pretty easy to setup. In order to complete your setup you'll also need part #...
    view full answer...
  • Weight Distribution for Riverside Whitewater Retro 179 SE
    The Blue Ox Weight Distribution system part # BLU36FR is a great option for a weight distribution system for your 179SE based on the weights you mentioned. But to use a 2-5/16 inch hitch ball you'd have to swap out what comes with it and go with the part # C40008 which will fit in place and is the size you want. For this tongue weight range of weight distribution they are not available with the larger ball size as a kit.
    view full answer...
  • Will Brake Actuator Cause Trailer Sway
    I have never heard of a brake actuator being the cause of trailer sway; you mentioned higher speeds, and without a form of sway control, that's going to naturally occur more the faster you go. I can't give you any specific amount of movement in the tongue, but if you're mostly experiencing sway at higher speeds, you can help remedy the issue with a weight distribution hitch with sway control. The Reese Steadi-Flex is compatible with surge brakes and the right one depends on your tongue...
    view full answer...
  • Is The Bulldog Trailer Jack # BD178201 Available
    We do offer the Bulldog Trailer Jack # BD178201, but it's unfortunately on extended back order at this time so it could be a bit before you get these in hand. If you need some jacks right away then I recommend going with the Pro Series Round, Pipe-Mount Swivel Jack w/ Footplate # PS1401420303 instead. Pro Series and Bulldog are both owned by the same parent company so these jacks are essentially the same, just different paint jobs.
    view full answer...
  • Hitch Ball Comptibility With Heavy Duty Ball Mount
    The B&W Heavy-Duty Ball Mount - 5" Rise, 6" Drop - 10-3/4" Long - 16,000 lbs # BWBMHD30014 will accept a 2-5/16 inch hitch ball that has a 1-1/4 inch diameter shank. If you hitch ball has this, it will work fine. If not, then I recommend the Curt # C40008. You may want to consider using a locking hitch pin like # e98880 to protect your investment.
    view full answer...
  • Recommended Ballmount for 2-1/2 inch Hitch Receiver, Hitch Ball and Sway Control Arm
    Our standard 2-1/2" ball mounts come in a 1 inch rise, like part # BWBMHD30210. I have included a FAQ about choosing the correct ballmount for you to check out. For a Hitch Ball with a 2-5/16" diameter you can use # C40008. This ball has a long shank and 20,000 lbs GTW. For a friction sway control system I recommend the Reese Friction Sway Control unit, part # 83660. This system can be used on the left or right side of the trailer.
    view full answer...
  • Recommended Distribution Hitch For 1480 lb Dry Trailer Tongue Weight
    I do understand your situation and I am here to help. What the dealer was trying to say is that trailer Tongue Weight (TW) is typically, about 10 to 15 percent of the Gross Trailer Weight (GTW), and a system should be picked with those figures in mind. Total Tongue Weight (TTW) also refers to the tongue weight of your trailer plus the weight of the cargo that sits behind the rear axle of your vehicle. The recommendation of a weight distribution hitch rated at 1,200 pounds tongue weight...
    view full answer...
  • Recommended Weight Distribution for Toy Hauler Tongue Weight 1,400-1,500 lbs
    The Strait Line Weight Distribution System part # RP66075 will be the better choice for your tongue weight range of 1,400 to 1,500 lbs. This system has the best sway control design on the market which fights to prevent sway before it starts. It does require some frame drilling though which I can understand is something you'd rather not do, but once it's done you'd be good to go. The holes do not affect the integrity of the frame either as the bolts being tightened where the holes are drilled...
    view full answer...
  • Recommended Curt Weight Distribution System for a 2015 Keystone Hideout 260LHS
    The Curt Weight Distribution System I recommend for a 2015 Keystone Hideout 260LHS is the Curt TruTrack Weight Distribution System part # C17499. The TruTrack has integrated sway control which will do a much better job than systems with add-on sway control such as the Curt Weight Distribution System part # C17341 with the Curt Friction Sway Control part # 17200. Furthermore this option does not require drilling into the trailer frame, it offers easiest setup, and does not restrict the reverse...
    view full answer...
  • Recommended Weight Distribution for Trailer With 1600 lbs of Tongue Weight
    Whew. That's one heavy trailer! As long as the trailer tongue weight won't exceed 1600 lbs, the # EQ64FR Equal-i-zer Weight Distribution System would be ideal. This particular system is meant to be used in a Class V hitch with a 2-1/2 inch by 2-1/2 inch receiver. This is the highest rated system Equal-i-zer offers. If your trailer's tongue weight will exceed 1600 lbs, the next step up is the Reese # RP66075 Strait-Line, good for up to 1700 lbs of tongue weight. The sway control component...
    view full answer...
  • Will The Reese Weight Distribution Head 58333 Work With A 1-7/8 Ball
    The Replacement Head for Reese Weight Distribution System # RP58167 will accept any ball that has a 1-1/4" diameter shank. When using the Reese # RP58167 you will be limited to either a 2" ball # A-90 or a 2-5/16" ball # C40008. We do not carry a 1-7/8" ball with a 1-1/4" diameter shank.
    view full answer...
  • Does Equal-i-zer Weight Distribution EQ37100ET Come With Shank & Hitch Ball
    Yes, both the shank and the 2-5/16" hitch ball are included with the Equal-i-zer weight distribution hitch you asked about: - Equal-i-zer Weight Distribution System w/ 4-Point Sway Control # EQ37100ET So you do not have to purchase those separately, though the hitch ball is not already installed on the # EQ37100ET. To install the hitch ball, you'll want to use a specific socket to make it much simpler; the socket will allow much simpler access the nut that holds the hitch ball, which...
    view full answer...
  • Width Dimensions for Mounting the Reese Super Titan 4000 Trailer Hitch on a 2000 Dodge Ram 3500
    The Super Titan 4000 Trailer Hitch # 38208 is actually designed to fit a C-channel frame. To determine if it will fit your 2000 Dodge Ram 3500 you just need to make sure that your frame is about 34" - 34-1/2" wide and is at least 8-3/4" tall. I spoke with my contact at Reese who said that the outside dimensions with the spacers is 34-1/2" but when you remove the spacers you get the 34" width. If you are needing bigger spacers I highly recommend not fabricating some as then the weight capacity...
    view full answer...

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Info for this part was:

Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Laura H
Written by:
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Employee Dustin K
Video Edited:
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Employee Chris R
Video by:
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Employee Wilson B
Updated by:
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