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  1. Trailer Hitch Ball
  2. CURT
  3. Gooseneck Hitch Ball
  4. 2-5/16 Inch Diameter Ball
  5. Offset Ball
  6. 20000 lbs GTW
Curt 4" Offset Ball for Double-Lock Gooseneck Hitch
CURT

Curt 4" Offset Ball for Double-Lock Gooseneck Hitch

Part Number: C602
In Stock
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$144.51
Retail:$191.95
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Trailer Hitch Ball
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Designed for use with Curt's Double-Lock, Flip and Store gooseneck hitch, this ball with extension provides 4" of offset to fit your towing needs. Great Prices for the best trailer hitch ball from CURT. Curt 4" Offset Ball for Double-Lock Gooseneck Hitch part number C602 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (59)
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  • Videos (1)
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  • Used (1)

CURT Trailer Hitch Ball - C602

  • Gooseneck Hitch Ball
  • 2-5/16 Inch Diameter Ball
  • Offset Ball
  • 20000 lbs GTW
  • Chrome-Plated Steel
  • CURT

Designed for use with Curt's Double-Lock, Flip and Store gooseneck hitch, this ball with extension provides 4" of offset to fit your towing needs.


Features:

  • Extension provides 4" of additional space between your truck's cab and your gooseneck trailer
  • Ball is chrome plated
  • This item is designed for use with Curt's Double-Lock gooseneck hitches
  • Assembled in USA


Specs:

  • Ball size: 2-5/16"
  • Offset: 4"
  • Capacity: 20,000 lbs
  • Vertical load capacity: 5,000 lbs
  • Shank diameter: 2-5/8"


C602 Curt 4" Offset Ball




California residents: click here


Video of Curt 4" Offset Ball for Double-Lock Gooseneck Hitch

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




Video Transcript for Complete Breakdown of the Curt 4" Offset Ball for Double-Lock Gooseneck Hitch

Speaker 1: Today we're going to take a look at the Curt Four Inch Offset Ball for the Curt Double Lock Gooseneck Hitches. Now what happens when you need to pull a gooseneck trailer that has an especially long front over hang, well without the right amount of clearance between the overhang and your truck cab, tight corners can get to be a little tough. This Curt Double Lock Gooseneck Offset Ball will easily slide into any double lock gooseneck hitch and it sets your coupling point four inches back of the original trailer ball hole.The offset gooseneck trailer ball secures in place just like any other compatible gooseneck ball, using the double lock's dual pin locking system. Again, this extension will provide four inches of additional space between your truck's cab and your gooseneck trailer. The ball itself is chrome plated. The base is a durable black powder coat finish.

And again, this item is designed for use in the Curt's double lock gooseneck hitches. The part is made in the USA, the ball size, the gooseneck ball is a standard two and five-sixteenths diameter. Again the offset, which we measure from where it goes in to the hole to the center of the gooseneck ball, is going to be right at four inches. Weight capacity on this is 20,000 pounds. Vertical load capacity is 5,000 pounds, but you do want to make sure it never exceeds your vehicle's maximum gross weight rating.But that should do it for the review on the Curt Four Inch Offset Ball for the Curt Double Lock Gooseneck Hitch..

Customer Satisfaction Score:

Ratings & Reviews

4.9

59 reviews
Designed for use with Curt's Double-Lock, Flip and Store gooseneck hitch, this ball with extension provides 4" of offset to fit your towing needs.

by:

works great and fast shipping.



by:

Not bad to install I really like the Curt hitch and offset ball, great price fast shiping would not hesitate to buy from etrailer again. The offset ball helped a lot, I didn't think I would be able to leave tool box on truck but had plent of clearance.



by:

Gave me enough added turning radius that maneuvering my 5th wheel became so much better when backing into those tight camping site. Excellent quality and have recommended this to many of my camping buddies



by:

Product is great but shipping was terrible, box delivered was tore to pieces. All shipping receipts was gone, didn’t have to even open the box because 3 out of 4 sides were tore open. Literally looked like the box fell out of the truck going down the road.

Gwendolyn Y. profile picture
Etrailer Expert

Gwendolyn Y.

6/4/2025

Ouch, I'm sorry to hear how your package arrived to you, Anndrea. That is definitely not what we want our neighbors to experience. If there are any issues with the offset ball at all, please let me know. I'm here to help.



by:

Good Quality. Works great



by:

This is a must have with 5 1\2 bed



by:


This is for my 4' square hole trailer
hitch extension. I love the fact that I can turn my trailer without breaking the back window. I had never seen a square hole before and this item came that way. I only wish they did one 6"-8" longer. But so far so good.



by:

Everything installed as advertised. Did all on my own just take your time and you will be fine also. 2006 duramax crew cab use for horse trailer and flatbed gooseneck.



by:

I sold my pick up and never used it. I still have it and I really like that it would of made my trailer not hit the tail gate with I was hooking up my fifth wheel.



by:

Great product gives 4in more room off truck cab



by:

The hitch is made really well and seems to be heavier than the b&w one I had in another truck. The offset makes it easier to pull a gooseneck trailer with my shortbed truck and gives me a better turning radius.



by:

Excellent solution! Installed on 2010 Dodge Ram 1500 quad cab. Now I won't hit cab of truck with 5th wheel camper!



by:

When you order products from etrailer you won’t be disappointed. A real live person actually answers the phone!!! Lisa answered our call and was friendly, curteous and very knowledgeable about the hitch extender I needed. She said it would arrive Tuesday and IT DID!!! I definitely recommend etrailer !!!



by:

The Curt goose neck hitch is a great product built very well. etrailer was a pleasure to work with delivering the product to my doorstep on time and complete. I would definitely use them again in the future.



by:

I can use this with my offset hitch to get more clearance on my truck

Chris profile picture

Chris

4/17/2019

It works great and really glad I bought it with my shortened truck



by:

I usually pull my trailers with a long wheelbase truck but my newest truck is a short bed. The hitch is too far forward but this works perfect pulling the horse trailer.



by:

Needed a little more room for the square front on the trailer. I was surprised how much sharper I can turn comfortably with only 4 inches more set back. Shopping on etrailer sight was easy and enjoyable.



by:

Great product from curt... Drops right in..
Shipping was on time... A+++
Needed for the short bed!!



by:

Great product from curt... Drops right in..
Shipping was on time... A+++



by:

The hitch fit like it was supposed to. It has load limits on the hitch and the ball so you cannot forget it. I like that.



by:

this isn't my first order from etrailer, always fast delivery and great prices. Products are as described on page and so far all have been solid quality parts.



by:

Great piece of gear. Very strong and r eliable.



by:

Great quality! Shipping and customer service was top notch



by:

Works well to give needed room for short box pickup and Fifth wheel camper.



by:

Heavy Duty! Works great to give me the extra inches I need for clearance in my short bed truck.


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Show More Reviews

See what our Experts say about this CURT Trailer Hitch Ball

  • What 5th Wheel to Gooseneck Adapter Hitch do I Need for My 2019 Ford F250 with Short Bed?
    Hello Shane, Great question, and I am going to need you pin box number to ensure we are getting you the right part number. If you are unsure of your pin box number, please feel free to send me the information off of the sticker on your current Pin Box so I can get it from Lippert. Since your 2019 F250 is a short bed you are definitely going to need an offset. The Shocker 5th Wheel to Gooseneck Pinbox for Lippert 1621/0719 and Rhino Box - 24K GTW - 6K TW # SHK23MR has a 3" offset. I attached...
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  • Offset Hitch Ball Fitment for Curt Double-Lock Gooseneck Hitch
    The 5" Offset Ball # 19308 will only work with the Bulldog, Draw-Tite, Hidden Hitch, and Reese Hide-A-Goose gooseneck trailer hitches do to the dimensions of the shank and the location of the hitch pin hole. If you have the Curt Double-Lock Gooseneck Hitch then you can use the Curt 4" Offset Ball # C602 instead as it is designed specifically for this Curt hitch. Unfortunately if you have something different then there isn't a solution for an offset ball, but we might still have an alternative...
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  • Is There An Offset Gooseneck Ball For 2017 Ram 2500 With Factory Puck System?
    Hello Carl, thanks for reaching out. So we do offer a 4" offset gooseneck ball for the 2017 Ram 2500 puck system, the Curt # C68ZV. The problem is this would not be compatible with the Andersen Ultimate hitch. Also, using a double offset isn't something we typically recommend. We do have a standard ball, the Curt # C60618 that would be compatible with the Andersen hitch.
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  • What is the Weight Rating for the Curt 4" Offset Ball for Double-Lock Gooseneck Hitch?
    Hey Daren, thanks for reaching out! The Curt 4" Offset Ball # C602 is rated for 20,000 lbs towing and has the 5,000 lb vertical load capacity. That 10,000 lb rating is an extension of our facet system that helps with filtering, but I've asked that it be updated to the 20K specs for consistency. Thanks for catching that! Are you towing gooseneck trailers, or a 5th wheel with a gooseneck adapter?
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  • Solution for Towing a 5th Wheel Trailer with Curt Double-Lock Hitch on 2017 Chevy Silverado 2500
    While we do have other options for you, the only way to use the B&W Companion # BWRVK3500 or # BWRVK3400 is by having the entire B&W Gooseneck Hitch # BWGNRK1016 installed on your 2017 Chevy Silverado 2500 as there isn't a way to safely fit different parts of gooseneck hitches together. With that being said, I'm a little curious about the gooseneck hitch you currently have installed. Reason being that the Chevy factory gooseneck hitch would have needed all of the pucks installed as well...
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  • Offset Gooseneck Ball Recommendation for Draw Tite Hitch in 2016 Ram 3500
    If the gooseneck hitch you had was the Draw Tite Hide-A-Goose style of hitch the offset gooseneck ball part # 19308 would fit and work well. The hitch you'd have to have installed in your 2016 Ram 3500 would be the part # 9466 which is the correct fit for your truck. Reese does not make a gooseneck hitch for your truck but Draw Tite and Reese are made by the same company.
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  • Offset Gooseneck Ball For A Draw-Tite Hide-A-Goose Gooseneck 9465-91
    Hello Kara, we have exactly what you are looking for. Draw-Tite actually makes an offset ball specifically for the Hide-A-Goose Gooseneck 9465-91. For that you will want the following: - 5" Offset Ball for Hide-A-Goose Gooseneck Trailer Hitches # 19308
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  • Can The Curt CrossWing Gooseneck Adapter C32DR Be Used With Offset Gooseneck Ball?
    Hello Shayne, thanks for reaching out. I checked with my contact at Curt, and they said the Curt CrossWing Lightweight Gooseneck-to-5th-Wheel Trailer Hitch Adapter # C32DR should only be used with standard gooseneck balls, and should not be used with an offset ball. The CrossWing hitch provides 5" of offset, so you would not want to add more offset to this setup.
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  • Will A Gen-Y Gooseneck Pin Box Work With A 2024 Chevy Silverado 3500 With A Standard Bed
    The Gen-Y Hitch 5th Wheel to Gooseneck Pin Box # GY58GR has a 1621 bolt pattern, which is the most common pattern so there's a good chance that your Solitude also has this pattern and could swap to this pin box. There should be a sticker that lists a serial number, LCI item number, and RPO number that we can use to look up your pattern and see if it's a fit. You'll also want to check your trailer's fully loaded pin weight to ensure that this is the correct capacity. This specific model...
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  • Compatibility of Reese Goose Box Dimensions With Ram Truck
    For your 2013 Ram 2500 Crew Cab Short Bed, the Reese Goose Box 5th-Wheel-to-Gooseneck Air Ride Coupler Adapter # RP85FR is a fit as long as you don't have RamBox. I reached out to my contact at Reese to confirm and they even sent me an engineer drawing of the newer model Ram with the higher walls and shows how the Goose Box is compatible. I've attached it to assist as it gives some measurements for you as well. The Curt EZr # C60682 is the fit for your truck and the Curt 4" Offset...
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    Image 1 for
  • Gen-Y 5th Wheel To Gooseneck Pin Box Compatibility With A Rhino Box Pin Box
    Hey John, The Gen-Y Hitch 5th Wheel to Gooseneck Pin Box # GY98GR has a matching bolt pattern to your Rhino Box pin box. You will want to check your 5th wheel's pin weight to ensure the 3.5K model is going to be the right capacity though. With a 6.5' bed you're not going to be able to make a 90 degree turn unless your trailer has a really tapered nose. You can, however, use an offset ball to help provide more turning clearance though. These all have specific fits to the gooseneck hitch...
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  • Gen-Y 5th Wheel To Gooseneck Pin Box For A 2023 Grand Design Reflection 341RDS
    Hi Vince, Gen-Y switched production to the newer Snap Latch in December 2023 so anything manufactured from January 2024 and forward would come with the new latch. This is a direct-ship item so you'd be getting it directly from the factory, which would lead to a greater chance that you'll get the Snap Latch since we almost a few months into the year. To determine if this is the correct fit for your Reflection you'll need to determine the bolt pattern for the trailer as well as the fully...
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  • Recommended Gooseneck Hitch Ball For A 2024 Ram 3500 With OEM Puck System
    Hey Andy, The Curt 4" Offset Ball for Double-Lock Gooseneck Hitch # C602 unfortunately isn't a fit for a factory gooseneck/puck system, but you can use the Curt Ball and Safety Chain Loops Kit for Ram Underbed Gooseneck Hitch - 30K # C60618. If you're looking for an offset ball for some extra turning clearance then you can go with one of the following offset ball options: Gen-Y Hitch - 5" Offset # GY83XR Curt RockerBall Multi-Fit Ball Kit w/ 4" Offset # C78ZV Curt Multi-Fit Ball Kit...
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  • Recommended UnderBed Gooseneck System for a 2016 Chevy Silverado 2500
    Between the B&W and Curt underbed systems for your 2016 Chevy Silverado 2500, I recommend the B&W Turnoverball Underbed Gooseneck Trailer Hitch w/ Custom Installation Kit item # BWGNRK1016 based on B&W's reputation in the towing business, their amazing customer service, and warranty. The Curt EZr Double Lock Underbed Gooseneck Trailer Hitch item # C611-624 has an identical towing capacity to the B&W at 30,000 lbs and installs in basically the same way. They both include a gooseneck ball,...
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  • Comparing Curt Double Lock Gooseneck Hitch # 60720 to # 60683
    The Curt Double Lock # C60720 and the Curt EZr Double Lock # C60683 are basically the same gooseneck hitch. The difference is in the installation. The EZr gives you the ability to ensure the hole you drill in the bed is perfect without the need to measure. It instead uses the Center locator tool that allows you to drill from the bottom up for a perfect fit. The regular Double Lock system simply requires measuring and then you drill from the top down. If you are good with a tape measure,...
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  • Offset Gooseneck Ball Hitch Options For a 2020 Chevrolet Silverado 2500HD
    The Curt Custom Underbed OEM-Style Gooseneck Trailer Hitch # C60642 on your 2020 Chevrolet Silverado 2500HD will not allow for a offset ball. This is due to it not having a locking pin that travels through the shank of the ball like the Curt EZr Double Lock # C65HR or B&W Turnoverball # BWGNRK1020. Of these systems I recommend the B&W Turnoverball # BWGNRK1020 as the best option. You are able to store the ball in the same hole by simply turning it over to get a flat bed. And you can drop...
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  • Can An Offset Gooseneck Hitch Ball Be Used With An Extended 5th Wheel To Gooseneck Adapter
    It sounds to me like you have a 5th wheel to gooseneck adapter like the Ranch Hitch Universal 5th-Wheel-to-Gooseneck Coupler Adapter part # AM3100 already installed on your 5th wheel trailer. To answer your question, yes, a 5th wheel to gooseneck adapter is compatible with an offset gooseneck hitch ball. It is important to not that an offset gooseneck adapter, such as part # AM3139, should not be used with an offset gooseneck ball. However, as gooseneck hitch balls are specific to the...
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  • Which Offset Gooseneck Hitch Ball Will Fit the Factory Prep/Puck Hitch In My 2021 Ram 3500 Dually?
    To use a offset gooseneck ball on your 2021 Ram 3500 you will need to replace the factory gooseneck hitch with a B&W Turnoverball Underbed Gooseneck Trailer Hitch # BWGNRK1320. The B&W hitch mounts in the same place as the factory hitch, and does not affect the outer 4 mounting holes for a 5th wheel hitch. This will allow for you to use their 4" Offset Ball # BWGNXA4085. You can use the Reese Safety Chain Holder # RP30145 in the factory puck holes if you do not want to drill for the safety...
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  • Increasing the Clearance of an Andersen Ultimate 5th Wheel Hitch with an Offset Ball
    I called Andersen to confirm. If you are wanting more clearance for your Andersen Ultimate 5th wheel hitch, then using an offset ball like the Curt 4" Offset Ball for Double-Lock Gooseneck Hitch, part # C602, is exactly what you need. This should work perfectly for you. I've linked to a video review of the offset ball for you to look at.
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  • Why isn't There Offset Gooseneck Ball that Fits 2019 Ford F-250 OEM Gooseneck
    The reason there are no offset gooseneck balls that fit the OEM gooseneck hitch of your 2019 Ford F-250 is because the shape of the gooseneck ball that fits your hitch being round. Since it's round and can rotate in the hitch any offset could rotate forward and offset in the wrong direction. This is why it's only the square shank balls that can have an offset.
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  • B&W Gooseneck Offset Coupler for a 2019 Chevy Silverado 2500 w/ OEM Prep Package
    I have a solution for you but I am sorry the only offset balls that are available are for Curt's underbed package and B&W's turnover ball system. No one makes offset balls that fit the OEM prep packages. To get the clearance you need for your 2019 Chevy Silverado 2500 you are going to want the B&W Extend-A-Goose Gooseneck Coupler - 2-5/16" Ball - 10" Offset - 24,000 lbs item # BWTEXA4200. The sturdy inner tube pairs with existing outer tube to create a gooseneck coupler for hooking your...
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    Image 1 for
  • Do I Have Enough Clearance On my Ford F250 6 ft bed to Turn Sharp with a Gooseneck Trailer
    In order to determine if you will have enough clearance or how much of an extension would be required to safely execute a 90 degree turn you will need to take a few measurements and use the following formula. The formula looks like this: (A + B) - C = Clearance Where A equals distance from center of gooseneck coupler to truck cab, B equals the distance in front of or behind the the front of your trailer the center of the coupler is. So if there was an overhang on the front of the trailer...
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  • Recommended Offset Gooseneck Hitch Ball For A 2023 Ram 2500
    Hi Clifford, There are offset gooseneck hitch ball options for your 2023 Ram 2500, but we'll need to know what kind of hitch you have (B&W Turnoverball, Curt or Reese gooseneck, OEM puck system). I've got a few recommendations for you depending on what you have: B&W Turnoverball: 4" Offset Ball for B&W Turnoverball Gooseneck Trailer Hitches # BWGNXA4085. Reese Gooseneck Hitch: 5" Offset Ball for Hide-A-Goose Gooseneck Trailer Hitches # 19308. Curt Gooseneck Hitch: Curt 4" Offset Ball...
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  • Can I Make a 90 Degree Turn with the Reese Goosebox
    You're definitely going to want to do some test runs after installing a Goose Box, like part # RP85FR, or a trailer because you're correct that it's very unlikely you can make a full 90 degree turn. A Goose Box also doesn't increase your turning clearance either. In order to increase clearance to make turns you need to use a goosneck ball with an offset, such as part # C602. You need to choose an offset ball that fits your specific gooseneck hitch.
    view full answer...


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Used Picture for Curt 4" Offset Ball for Double-Lock Gooseneck Hitch
Used Picture for Curt 4" Offset Ball for Double-Lock Gooseneck Hitch

Condition: Surface Scratches

Notes: Item has cosmetic scratches.

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Info for this part was:

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