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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 2-5/8" Long Shank - Raw Finish - 30,000 lbs

2-5/16" Hitch Ball - 1-1/4" Diameter x 2-5/8" Long Shank - Raw Finish - 30,000 lbs

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Trailer Hitch Ball
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2-5/8" Long x 1-1/4" diameter shank. Fine threads provide superior strength on this raw, machine-finished ball. Designed for heavy-duty towing. Lowest Prices for the best trailer hitch ball from CURT. 2-5/16" Hitch Ball - 1-1/4" Diameter x 2-5/8" Long Shank - Raw Finish - 30,000 lbs part number C40085 can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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  • Reviews (613)
  • Q & A (0)
  • Photos
  • Why etrailer?

CURT Trailer Hitch Ball

  • Trailer Hitch Ball
  • 2-5/16 Inch Diameter Ball
  • 1-1/4 Inch Diameter Shank
  • Standard Ball
  • 30000 lbs GTW
  • Class IV
  • Class V
  • Raw Steel
  • 2-5/8 Inch Shank Length
  • CURT

2-5/8" Long x 1-1/4" diameter shank. Fine threads provide superior strength on this raw, machine-finished ball. Designed for heavy-duty towing.


Features:

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


Specs:

  • Hitch ball diameter: 2-5/16"
  • Fits ball platforms that are 3/8" to 1" thick
  • Overall height: 5-3/4"
  • Capacity: 30,000 lbs
  • Shank diameter: 1-1/4"
  • Shank length: 2-5/8"
  • Nut requires 1-7/8" socket or wrench
  • 1-Year limited warranty


Please note: The hole size on your ball mount must not be more than 1/16" larger in diameter than the threaded shank.



40085 Curt 2-5/16" Trailer Ball - Raw Finish - 30,000 lbs

Replaces 40041

Item # C40085






Customer Reviews

2-5/16" Hitch Ball - 1-1/4" Diameter x 2-5/8" Long Shank - Raw Finish - 30,000 lbs - C40085

Average Customer Rating:  4.8 out of 5 stars   (613 Customer Reviews)

2-5/8" Long x 1-1/4" diameter shank. Fine threads provide superior strength on this raw, machine-finished ball. Designed for heavy-duty towing.

- C40085
by:

Ball is perfect. 3" hitch on the other hand is loose as a goose with about an .125 of play up and down and side to side. Quite disappointing but I wrapped it with tape.


Comments
I do have another solution for you to help minimize movement of the Curt ball mount part # C45431
Curt Heavy Duty Forged Ball Mount for 3" Hitches - 4" Rise - 6" Drop - 21,000 lbs
$100.39
in the receiver. The Blue Ox Immobilizer part # BLU85QR
Blue Ox Hitch Receiver Immobilizer for 3" Hitches
$58.86
is great for 3 inch receivers.
-- Etrailer Expert Jenny N - 11/17/2021


- C40085
by:

I ordered the 30000 lb. ball hitch for a gooseneck on my 01 F250 super duty. It arrived at the time that e trailer said it would. I was able to choose the way the item was shipped which saved me money over other online options. I just put it in since it was a raw Steel ball I hit it with a coat of flat black enamel to keep the rusting to a minimum. It is installed and ready to pull. I don't have a gooseneck trailer but now if I need to pull a rental or a friends I can. I like doing business with places directly like e trailer and cutting out the big box places that are not easy to communicate with if there is a problem. There wasn't any which is even better.



- C40085
by:

So the customer service is fantastic. I ordered the BWX2000 and it showed up missing the shank. It was not etrailer’s fault as the shipment initially contained everything but the carrier messed up and the package didn’t arrive with the shank. I spoke to autumn in customer service and she did absolutely everything she could to get me the 2.5 inch shank I needed but ended up sending me the 2in receiver by mistake. Again I wasn’t upset because I did not specify and by the time I realized it was wrong the part was already on the way. Long story short I got the 2 in shank in the next day, this shank would work but it was not exactly for the load I wanted to safely pull. Anyway I ended up finding the correct shank, ordered it and it is one the way. Now I will have both the 2 and 2.5 in shank for the same distro hitch but guess what I am completely fine with it backside I have two trucks, each with different receivers so for just a little bit more I can use this hitch for both my trucks just fine. Everything happens for a reason and I was completely happy with how autumn helped me out. She was great and called me back several times to let me know what both she was trying to do and get assistance from several of her techs. Thank you and I will certainly do business with autumn and etrailer again. Autumn was really nice to me and did everything she could to help me out. Thanks again. Jason



- C40085
by:

Nice raw finish. Clean and smooth machined threads. Functional load rating is stamped on top of the ball.



- C40085
by:

The product I purchased, a 2-5/16" hitch 30,000 lbs ball, is very nice quality. I was very impressed. I had looked locally for a similar product, but was only able to find a hitch ball for about twice as much cost. As to the service from etrailer, I was equally impressed. Soon after I ordered the product, I recieved a personal email expressing thanks for the purchase. While I realize this may have been an automatic "canned" response, I got the feeling there was custormer interest and I could respond in email if I wished. Thank you. I will continue to order all my trailer and hitch needs from etrailer.


Comments
Great. I use it all the time with no issues. I trust the products you endorse and I really appreciate the great customer service. Please, do not change anything.
Peter C - 07/11/2015



- C40085
by:

You could pull a house with this ball. 30K rated.


Comments
Well, a tiny house, anyway
-- Etrailer Expert Laura E - 12/07/2017


- C40085
by:

The ball is fine. But, the nut is 1 7/8, and is supposed to be torqued to 450 foot pounds. Who has a wrench that big? Not me. Nor my local Ace Hardware. I asked Etrailer.com if they would torque on the ball to the hitch that I ordered at the same time. They told me "no", they didn't have a wrench that big - ! So, I ordered a socket and a 35 inch breaker bar from amazon - for $70 - more than my new hitch and ball costs. At least shipping is free. Etrailer.com has lousy service/product support.


Comments
Thomas, thank you for your review. Yes, the ball does need to be torqued to 450 lbs. If you do not have a torque wrench that will torque that much weight most mechanic shops will let you rent one or torque the ball for you for a small fee.
-- Etrailer Expert Heather A - 05/11/2018


- C40085
by:

Getting the strongest ball mount takes the worry away from the ball being the weakest link. A little more money spent now can save a fortune later.



- C40085
by:

Nice finish , well manufactured 30,000 trailer ball . i just wanted to have a strong trailer ball , no weak links . I have two of these trailer balls , when I received the first one I thought " wow , nicely manufactured and nice finish " so ... I have one for each hitch , a load transfer torsion hitch and just a regular hitch .



- C40085
by:

After doing a bit of research I found I was towing with an undersized ball and ball mount. The information for this product helped me get the correct ball and mount for my trailer with correct weight rating and drop to safely tow my trailer. Product is heavy duty and has performed as expected.


Comments
Great product! Has performed as expected with zero issues or problems.
Sandy - 07/16/2019



- C40085
by:

Haven’t installed it yet although etrailer was easy to work with, and the product was delivered on time



- C40085
by:

Great heavy duty ball.



- C40085
by:

These are very nice.



- C40085
by:

Works perfect I'm using it on a 12,000 pound weight distribution hitch so it's completely overkill



- C40085
by:

Great price and 30k pound hitch that looks great as well. Still have not figured out how you torque it to 450ftlbs, but I will get it tight. It does not have flats on the ball side to hold tight. Will work great as the replacement gooseneck ball on my flatbed. Great prices and shipping is reasonable and fairly fast on all products. Will buy from Etrailers and tell others whenever they are looking for parts.



- C40085
by:

Product was well worth the money it’s very nice looking and good Quality and was delivered very quickly



- C40085
by:

Great quality and a great price!


Comments
Heavy duty and reliable!
Dwayne - 11/04/2021


- C40085
by:

Looks really good. We are planning to use it on a large boat trailer, and needed something pretty stout. 30,000 lb. looked to us like that would do the job, and we were unable to get anything close to that weight/strength locally. The people at eTrailer.com did a fantastic job of keeping us informed of what was happening with our order. Very Happy!



- C40085
by:

Fast delivery and good quality products.



- C40085
by:

It's just a 2 5/16" trailer ball, right? Well, no, not exactly; it's a dead-serious, well-engineered piece of equipment that, if it fails catastrophically will ruin your day! These folks offer primo items like this for fair prices and, unless you're desperate for it and can't wait, doesn't rip you off for shipping the thing to your door. I'm just a guy with a truck and a travel trailer but each time I've bought stuff from these fine folks I've got what I thought I'd ordered with absolutely no surprises, so I give them just what they deserve: 5 stars!



- C40085
by:

Once again I made a purchase from etrailer and I am very happy with the merchandise. Everything I have purchased from a trailer ball to more than one set of tires for multiple trailers has been well above average. Very fast processing of my order and the delivery. The customer service is what really pushes my rating to a 5. Everyone is not only knowledgeable but great people who are always happy to help. And no, I was not paid to give this review and I am a real customer. Great company to do business with.



- C40085
by:

Excellent! I tow my Sea Ray 370 with this. 20k pounds



- C40085
by:

Works great



- C40085
by:

This Ball is rated much higher than any I had or could find locally.



- C40085
by:

Good ball for a good price.


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Show More Reviews

Ask the Experts about this CURT Trailer Hitch Ball



  • What Size Socket or Wrench is Needed for the Nut on Curt 30K Hitch Ball 40085
    I went out to the warehouse and pulled Curt hitch ball # C40085. I took it out to our install bays and grabbed a socket that would fit. It takes a 1-7/8 inch socket or wrench.
    view full answer...
  • Overall Height of the 2-5/16" Hitch Ball # C40085
    I went out into our warehouse and grabbed a 2-5/16" Hitch Ball # C40085 to measure and found it is from top to bottom 5-3/4 inches tall.
    view full answer...
  • Will Curt Hitch Ball # C40085 fit Drawtite 21k Ball Mount # 40700
    Yes, the Curt ball part # C40085 will fit in the ball hole of the Draw Tite ball mount part # 40700 that you referenced. The thickness of the ball mount platform is 9/16 inch and the diameter of the hole is 1-1/4 inch.
    view full answer...
  • Correct 2-5/16 Inch Hitch Ball For Blue Ox SwayPro
    The only thing you need to know regarding the correct 2-5/16" hitch ball for the Blue Ox SwayPro Weight Distribution # BXW1500 is the size of the shank to get one that fits. This system requires a hitch ball with a 1-1/4" shank so what you can use is the following hitch ball: - 2-5/16" Hitch Ball - 1-1/4" Diameter x 2-5/8" Long Shank # C40085
    view full answer...
  • 2-5/16 Hitch Ball That is Made in America
    The Curt 2-5/16" Hitch Ball # C40085 is made overseas, though we do have a similar hitch ball that is made in America, the B&W # BWHB94004. Like the Curt hitch ball, the B&W is 2-5/16", has a 1-1/4" shank and a 30,000 lb towing capacity. The shank on the B&W is 2-1/2" long, which is 1/8" shorter than the shank on the Curt ball.
    view full answer...
  • Will Rust on Trailer Ball Affect Its Performance
    The small amount of surface rust on your ball will not affect its future performance. If the ball had been exposed to the elements for many months or years and the corrosion was more severe, I would be reluctant to use it. Since the rust is minor, you can use it with no worries. I would recommend keeping a light coating of grease like part # 58117 on the ball. This will prevent further corrosion, and will also quiet the connection to a degree. The Curt # C40085 has a raw, machined finish....
    view full answer...
  • High Capacity Ball Mount Recommendation with 4 inches of Drop
    We have the Draw-Tite Ball Mount for 2" Hitches # 40331 which is similar in that it has a 4 inch drop, has a 16k capacity but is 9-1/4 inches long which makes it about an inch longer. For hitch ball you'd then want the Curt part # C40085 and you'd be set.
    view full answer...
  • Recommended Trailer Hitch Receiver for 1993 Ford F-350 Cab and Chassis
    For your 1993 Ford F-350 cab and chassis, I recommend the Curt Trailer Hitch Receiver - Custom Fit - Class IV - 2" # C14082 which is rated for 10,000 lbs and tongue weight of 1,000 lbs and goes to 12,000 lbs and 1,200 lbs tongue weight when paired with a weight distribution system. This is a larger capacity than some Class V hitches, and most likely will meet your needs. We don't currently have a manufacturer that makes a Class V hitch for your vehicle. With this hitch, I recommend the...
    view full answer...
  • What 2-5/16 Inch Ball will Fit the 1-1/4 Inch Hole Diameter of the Draw-Tite Ball Mount # 40702?
    For 2-5/16 inch a ball that fits the 1-1/4 inch ball hole diameter of the Draw-Tite Ball Mount # 40702, I recommend the 2-5/16" Hitch Ball - 1-1/4" Diameter x 2-5/8" Long Shank # C40085. Since this ball has a 1-1/4 inch diameter shank, it is compatible with the # 40702. If you happen to need a hitch pin with the ball mount, the # BD580412 not only provides a snug fit, but it also has a lock for theft-deterrence.
    view full answer...
  • Distance From Hitch Pin Hole to Hitch Ball of Curt Ball Mount C45460
    We measured the distance from the center of the hitch pin hole to the center of the hitch ball and found that measurements was 10-1/2 inches for the Curt Ball Mount for 2-1/2" Hitches # C45460. This ball mount has a 20,000 lb capacity and gives you either 6-1/2" of rise or 8" of drop; for a hitch ball that will fit the best option is the 2-5/16" Hitch Ball # C40085. I also recommend locking it to your hitch with the Hitch Receiver Lock # e98881. I have added links below to some video...
    view full answer...
  • 30k Hitch Ball that Can be Used in Fixed Ball Mount for 2 inch Hitches
    There isn't a ball mount that fits a 2 inch hitch that has a ball diameter of 1-1/2 inch like what the part # BWHB94005 needs as this ball was designed for use as a gooseneck ball. For a similar 30k capacity hitch ball that has a shank diameter of 1-1/4 inch you'd want the Curt part # C40085 which you could use with a ball mount like the Curt # C45341 which has a drop of 4 inches.
    view full answer...
  • Will a Trailer Hitch Ball with a Raw Finish Last as Long as a Ball with a Chrome Finish
    A chrome finish ball is going to look good but it will not be corrosion resistant. A ball with a machine finish like # C40041, is going to have about the same corrosion resistance. In terms of performance they will wear at about the same rate under normal use. The best balls in terms of corrosion are going to be stainless steel followed by zinc coated balls. But in terms of balls that have a 30,000 pound capacity and a 1-1/4 inch shank, ball # BWHB94004 or # C40085 are the only options....
    view full answer...
  • Is the Curt Hitch Ball # C40085 Compatible with a Gooseneck Hitch
    The Curt Hitch Ball # C40085 that you referenced is meant to fit a trailer hitch receiver ball mount. Due to its design it is not compatible with a gooseneck hitch. We do have some gooseneck hitch ball options like the Hide-A-Goose Gooseneck Hitch Ball # 19309, the Replacement Hitch Ball for B&W Turnoverball Gooseneck Hitches # BWGNXA2006, and the Curt Pop-In Ball # C60601. These are specific to certain gooseneck hitches though so you will need to make sure that you choose the correct...
    view full answer...
  • Shank for a 2-1/2 Inch Trailer Hitch to Use Reese 1700 Pound Weight Distribution
    Reese weight distribution system # RP66075 does not come with a shank so if using it with a 2-1/2 inch trailer hitch you just need the appropriate shank. You can use # RP54977 with a 5-3/4 inch drop or 8-1/4 inch rise. You will also need a ball that has a 1-1/4 inch shank diameter such as # C40085.
    view full answer...
  • Recommended Trailer Hitch And Weight Distribution System For 1998 Chevy C3500 With Trailer TW 1900#
    For your 1998 Chevy C3500, the only compatible weight distribution system that will work in conjunction with a trailer hitch is the TorkLift SuperHitch Everest Weight Distribution System - 30,000 lbs GTW, 3,000 lbs TW # TLWD1000. This system requires the Adjustable Shank for TorkLift SuperHitch Everest Weight Distribution - 12-1/2" - 30,000 lbs # TLM9010 and hitch ball # C40085. This system does not have an integrated sway control. This system works with the TorkLift SuperHitch Original...
    view full answer...
  • Weight Distribution System Recommendatio for 2016 Forest River Stealth
    The best way to pick out a weight distribution system is to base it off of the loaded tongue weight of the setup when it is loaded and ready to tow. This figure also includes the weight of any cargo behind the rear axle of the tow vehicle. I attached a help article on determining tongue weight for you to check out as well. You will want the loaded tongue weight of your setup to fall right in the middle of the tongue weight range of the system you use. If your trailer when fully loaded...
    view full answer...
    Image 1 for
  • Recommended Weight Distribution System and Transmission Cooler for 2006 Chevrolet Silverado 2500 HD
    For your 2006 Chevrolet Silverado 2500 HD, I have checked your owners manual and with a weight distribution system of proper size you should be within the manufactures guidelines for your vehicle. When considering which system, the total tongue weight is the biggest determining factor which includes any weight behind the rear axle of your truck and the loaded tongue weight of your toy hauler. Normally the tongue weight is 10-15% of the gross towing weight of the trailer. With the information...
    view full answer...
  • What Size Receiver Comes on the Buyers Products 3371809065
    The Buyers Products # 3371809065 has a 2" receiver, so you would need a ball mount that will fit in that receiver like the Curt Heavy Duty Forged Ball Mount # C45342. Which hitch ball you would use depends on the ball hole diameter of the ball mount and the size of the coupler on the trailer you'll be towing. The Curt # C45342 has a 1-1/4" diameter ball hole, so you'd need a hitch ball with a 1-1/4" shank diameter like the # A-90 for 2" hitch ball or # C40085 for a 2-5/16" hitch ball.
    view full answer...
  • Best Trailer Hitch, Wiring Harness and Ball Mount For 2020 Hyundai Santa Fe
    Thank you for the helpful information Travis. The Curt Trailer Hitch Receive part # C13195 for the 2020 Hyundai Santa Fe is your best option for towing the trailer because the quality of the Curt is better than the other options. It is assembled in the USA and the powder coat seems to last a bit longer than it's competition. It is a no drill installation, I have attached an installation video for your reference. For the wiring, I recommend Tekonsha T-One Vehicle Wiring Harness for Factory...
    view full answer...
  • Trailer Hitch and Wiring for 2003 Chevy Suburban that Can't Accept a Hitch from a 1995 Suburban
    The trailer hitches for the 1995 Chevy Suburban do not fit the 2003 models. We do have numerous hitches that will fit the 2003 though and I have included a link to them. The most popular option is # C15324. This is a Class V hitch with a 2 inch receiver. I have linked the instructions for you. If your Suburban did not come with a trailer connector at the back you can add a 4-Way flat using # 119147KIT. The recommended ball mount is # C45341. It takes a ball with a 1-1/4 inch shank such...
    view full answer...
  • Recommended Weight Distribution for Dual Cam System Towing 2011 Salem Travel Trailer 1100 lb TW
    It sounds like you are needing everything else but the dual-cam set up, is that correct? If that is the case, I recommend the Reese Trunnion Weight Distribution System, part # RP66131. This system is designed for trailers with tongue weights ranging from 800-1500 lbs. You also need the weight distributing shank, part # RP54970 and the 2-5/16 inch trailer ball with 1-1/4 inch shank, part # C40085.
    view full answer...
  • Weight Distribution System for 2006 Dodge 2500 Diesel with 2-Inch Lift Towing 32-Foot Haulmark
    The Reese Strait-Line Dual Cam Trunnion Bar Weight Distribution/Sway Control System you referenced, part # RP66130, is a good option if it matches your trailer tongue weight. Dual cam sway control helps to stop trailer sway from starting in the first place because the cams lock in position to hold the trailer steady but will automatically unlock and slide to allow full-radius turns. This type of trunnion bar system also provides better ground clearance than round bar systems. The brackets...
    view full answer...
  • Selecting a Hitch Ball for Use With Blue Ox SwayPro Weight Distribution System # BXW0750
    The Blue Ox SwayPro Weight Distribution System # BXW0750 that you referenced does require a hitch ball with a shank diameter of 1-1/4-inches. The size ball that you need depends on the coupler on your trailer. The coupler should have stampings or other indications for the diameter of hitch ball that it fits. For a 2-inch ball you can use # A-90; for a 2-5/616-inch ball you can use # C40085 .
    view full answer...
  • Recommendation For Weight Distribution With Sway Control To Pull Trailer With 2017 Dodge Ram 2500
    In order to get the right Weight Distribution (WD) system for your 2017 Dodge Ram 2500 towing setup, you need to know your actual Tongue Weight (TW) when fully loaded and ready to tow. You will also need to include any weight from behind the rear axle of your tow vehicle. To make this easier, I recommend using something like the Sherline Trailer Tongue Weight Scale, Item # 5780. As you determine this weight, keep in mind that the TW is 10% to 15% of the total loaded weight of your trailer.  After...
    view full answer...


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Info for this part was:

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Employee Kathleen M
Installed by:
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Employee Adam E
Installed by:
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Employee Laura H
Written by:
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