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

Curt 4" Offset Ball for Double-Lock Gooseneck Hitch

Item # C602
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Our Price: $107.59
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Trailer Hitch Ball
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Shipping Weight: 20 lbs
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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. Lowest 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 or call 1-833-496-1390 for expert service.
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  • Reviews (43)
  • Q & A (0)
  • Videos (1)
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CURT Trailer Hitch Ball - C602

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

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.


  • 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


  • 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

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 Curt Hitch Ball - Gooseneck Hitch Ball - C602 Review

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 Reviews

Curt 4" Offset Ball for Double-Lock Gooseneck Hitch - C602

Average Customer Rating:  4.9 out of 5 stars   (43 Customer 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.


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.


Well built, heavy duty.


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.


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.


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 !!!


Works as designed!!!


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.


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.


Great product gives 4in more room off truck cab


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.


Fit perfectly with my spray in bed line r.


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.


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.


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.


Curt 4" offset ball Haven't had a chance to use it. Looks as if it will fill my needs

Works great Thank you
Daniel - 01/05/2020


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


This is a must have with 5 1\2 bed


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

It works great and really glad I bought it with my shortened truck
Chris - 04/17/2019


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


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


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


Had the hitch for a year & have had no problems. Great product!


Works as it is designed to. Pulled rv cross country and back.


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


Good quality. Ok off set.could use a few inches more

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