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  1. Lunette Ring
  2. CURT
  3. 2-1/2 Inch Lunette Ring
  4. Bolt-On
  5. Coupler Only
  6. 35000 lbs GTW
Curt Lunette Ring - Flat Plate Mount - 2-1/2" Diameter - 35,000 lbs

Curt Lunette Ring - Flat Plate Mount - 2-1/2" Diameter - 35,000 lbs

Item # C48550
Retail:$191.95
Our Price: $124.18
You Save: $67.77
Lunette Ring
Shipping Weight: 20 lbs
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This lunette ring bolts onto the front of your trailer so you can couple to a pintle hook. The back of the square base is smooth for flush mounting to flat surfaces. Hardware sold separately. Powder coated forged steel resists rust. Fastest Shipping and Great prices for Curt Lunette Ring - Flat Plate Mount - 2-1/2" Diameter - 35,000 lbs. Read our customer reviews of CURT lunette ring. Call 1-800-940-8924 for expert service or order your lunette ring part number C48550 by CURT online at etrailer.com.
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  • Reviews (8)
  • Q & A (0)
  • Videos (1)
  • Photos

CURT Lunette Ring - C48550

  • 2-1/2 Inch Lunette Ring
  • Bolt-On
  • Coupler Only
  • 35000 lbs GTW
  • Standard Coupler
  • CURT

This lunette ring bolts onto the front of your trailer so you can couple to a pintle hook. The back of the square base is smooth for flush mounting to flat surfaces. Hardware sold separately. Powder coated forged steel resists rust.


Features:

  • Lunette ring is designed to couple with a pintle hitch
  • Bolt-on installation
    • Pre-drilled mounting holes provide simple installation
    • Hardware kit with Grade 8 hex bolts (C48332) sold separately
  • Smooth backside allows for flush mounting to flat surfaces
  • Strong forged steel construction
  • Corrosion-resistant black powder coat finish


Specs:

  • Weight capacity: 35,000 lbs
  • Inner diameter: 2-1/2"
  • Mounting plate dimensions: 6-1/2" wide x 6-3/16" tall
  • Bolt hole spacing: 4-1/2" apart on center
  • 1-Year limited warranty


Dimensions


48550 Curt Forged 4-Bolt Mount-Style Lunette Eye for Trailers - 35K





Video of Curt Lunette Ring - Flat Plate Mount - 2-1/2" Diameter - 35,000 lbs

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




Video Transcript for Review of Curt Lunette Ring - 35K Bolt On Lunette Ring - C48550

Hi there, I'm Michael with etrailer.com. Today, we're gonna take a quick look at this Curt Lunette Ring. This is going to easily bolt right onto the front of your trailer, so that you can couple to your pintle hook. This is constructed of a strong forged steel, so it is going to give us a max weight capacity of 35,000 pounds. You can see that steel is covered with this black powder coat finish to help resist rust and corrosion. Our inner diameter of our ring here is gonna be right at 2 1/2 inches.

Our ring itself is a diameter of about 1 1/2 inch. So our outer diameter is gonna be 5 1/2 inches. Our mounting plate is gonna be 6 1/2 inches at that widest point there. And then our height, just over 6 1/4, call it 6 3/16 of an inch tall. You can see the back here does have this nice smooth finish, and that's going to allow it to sit flush to your mounting surface.

And the pre-drilled holes are gonna make it very easy to get this installed. Those are spaced 4 1/2 inches center-to-center by 4 1/2 inches. The hardware to get this installed is not included. We do have a kit available that features the grade-8 hex bolts that will be needed to get this installed. Again, that is sold separately.

You can find it here at etrailer.com using that part number that you see on the screen. So a really great option if you are looking to add a lunette ring to your trailer, whether the original is worn out or damaged, or you're just wanting to switch over to the more heavy duty lunette ring style. That's gonna complete our look for today. Again, I'm Michael with etrailer.com. Thanks for watching..

Customer Satisfaction Score:


Customer Reviews

Curt Lunette Ring - Flat Plate Mount - 2-1/2" Diameter - 35,000 lbs - C48550

Average Customer Rating:  5.0 out of 5 stars   (8 Customer Reviews)

This lunette ring bolts onto the front of your trailer so you can couple to a pintle hook. The back of the square base is smooth for flush mounting to flat surfaces. Hardware sold separately. Powder coated forged steel resists rust.

by:

Heavy Duty for my Chipper. Great Customer Service.



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Bolt onto trailers that already have them installed.



by:

Order was easy to place and we received it ahead of schedule. Customer Service was very helpful and attentive via email. Product was received in excellent conditions and fit as indicated.



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8
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See what our Experts say about this CURT Lunette Ring

  • Should You Lubricate a Lunette Ring
    You should NOT grease or lubricate a pintle loop like the part # C48550. Grease attracts dirt which will act like sandpaper and grind away at even the hardest of metals.
    view full answer...
  • Bolt Pattern for Curt and Tow Ready Lunette Rings
    I contacted the manufacturer and found that the mounting hole dimensions of the Lunette Ring with 4 Hole Base, item # C48550, are 4-1/2 inches up and down and 4-1/2 inches left to right. The holes are 5/8 of an inch in diameter.
    view full answer...
    Image 1 for
  • What Grade Bolts are Included with Tow Ready Lunette Ring # C48550
    The Curt Lunette Ring # C48550 referenced in your question requires grade Grade 8 hex mounting bolts like # C48332. This lunette ring has a 35,000 pound weight capacity and its black powder coated steel will help to protect it against any rust or corrosion. I have attached a short video review on this assembly that you can check out as well.
    view full answer...
  • Troubleshooting Trailer Sway with a Trailer with a Pintle Style Coupler
    Due to the heavy duty nature of the lunette style pintle setups there isn't a bushing available for the rings. The sway you are experiencing is most likely due to improper trailer loading. If you move as much of the weight of your cargo forward on the trailer as you can you should see a drastic improvement. You also want to make sure your trailer is being towed as level as possible. Also check to make sure the tire pressure in all of your trailer tires is inflated to the max psi rating...
    view full answer...
  • Vertical Capacity of Curt C48550 Lunette Ring- Flat Plate Mount
    The Curt # C48550 Lunette Ring has an 8400 lb vertical capacity when fastened with the included 5/8 inch bolts. The gross weight capacity is 35,000 lbs.
    view full answer...
  • Available Mounting Bolt Pattern for Bolt-On Trailer Side Lunette Ring
    It sounds like you have a 4-bolt bolt-on trailer side lunette ring like the # C48550. This is a 2-1/2-inch inner diameter ring with a 4-1/2-inch center-to-center hole spacing. This is as you noted the only mounting hole spacing for such bolt-on items. The link provided will let you view all lunette ring couplers we offer, both bolt-on and weld-on types. You can use the filters in the margin to narrow the results based on the ring diameter and other features.
    view full answer...
  • Dimensions of the Lunte Ring - 4 Hole Base
    I contacted the manufacturer and found that the mounting hole dimensions of the Lunette Ring with 4 Hole Base, item # C48550, are 4-1/2 inches up and down and 4-1/2 inches left to right so this item should be the correct fit for your truck and trailer.
    view full answer...
  • Mounting Hole Dimensions for the Lunette Ring with 4 Hole Base # C48550
    I contacted the manufacturer and found that the mounting hole dimensions of the Lunette Ring with 4 Hole Base, item # C48550, are 4-1/2 inches up and down and 4-1/2 inches left to right. The holes are 5/8 of an inch in diameter. They use the hardware kit # C48332. I attached a diagram with these dimensions for you to check out as well.
    view full answer...
    Image 1 for
  • What Size Pintle Hook Should be Used with Pintle Loop # C48550
    Standard pintle hooks like the part # C48004 would easily work great with the 2-1/2 inch diameter pintle loop part # C48550 that you referenced.
    view full answer...
  • Smallest Size Lunette Ring for 2-5/16" Pintle Hook and Ball Combo
    The smallest size lunette ring you could use with a 2-5/16" pintle hook and ball combo like the Curt Pintle Hook with 2-5/16" Hitch Ball part # C45922 is 2-1/2" like the Curt Lunette Ring part # C48550.
    view full answer...
  • Availability of Lunette Rings Smaller than 3 Inches
    We carry a 2-1/2 inch Lunette ring that has a four hole flat mount base, item # C48550. Other than that our Lunette rings are 3 inches. We do have other couplers that bolt to your trailer tongue, like part # DM12141-81. I've also linked the rest of our selection. You will need to be sure the mounting blot pattern is the same and that the weight capacity is high enough for the trailer you are pulling.
    view full answer...
  • Lunette Ring for 23,000 lb Trailer and Boat
    There aren't any lunette rings that have a bolt pattern which measures 5" horizontally by 8" vertically so the best we can offer is a new lunette ring and mounting plate you would have to weld on. You can choose from either a 2-1/2" or 3" lunette ring, depending on what you need. - 2-1/2" Diameter: Curt Lunette Ring - Flat Plate Mount # C48550 - 3" Diameter: Curt Lunette Ring - Flat Plate Mount # C48560 - Mounting Plate: Buyers Products Mounting Plate for Lunette Ring # 337TNP716750100 I...
    view full answer...
  • Will a Pintle Hitch Fit Weld-On Nose Plate 337TNP716625750
    Plate # 337TNP716625750 is going to be larger than what pintle hook # C48210 requires. The pintle hook is usually on the vehicle side so the mounts for it all have regular shanks that fit a hitch receiver. You want something like part # 63057. The nose plate would be used on the trailer side to attach a lunette ring such as # C48550. The bolt holes are 4-1/2 inches apart.
    view full answer...
  • Bolt Torque for Curt Lunette Ring - Flat Plate Mount - 2-1/2" Diameter - 35,000 lbs
    The Curt Lunette Ring part # C48550 which is designed for a plate like the Curt Pintle Hook Mounting Plate part # C48239 does not come with mounting hardware. If you need this, I recommend the Curt Bolt Kit for Flat Mount Lunette Ring part # C48332. This kit comes with 5/8" Grade 8 Bolts which have a recommended torque of 159 ft. lbs. If you need a torque wrench for this, I recommend the Torque Wrench part # PT79FR.
    view full answer...
  • Availability of 2-1/2 inch Lunette Ring for Trailer
    We do have 2-1/2 inch diameter lunette rings like the Curt part # C48550 which has a 35,000 lb capacity. To install this we have the hardware kit part # C48332 and for a mounting plate part # 337TNP716625750.
    view full answer...
  • Options for a Pintle Hook to Connect to a Trailer with 8 Inches of Rise
    As you obviously have already learned there are a lot of variables into building a trailer. And I can't tell you what is or isn't completely safe in your exact circumstances. I highly recommend having your setup evaluated by a professional welder who has experience with trailers. Some of the components you're trying to combine may be just fine but only someone with experience and ability to test such products can really tell you that. I can't recommend using # RP45294 with # C48550....
    view full answer...
    Image 1 for Image 2 for
  • Using a Pintle Hook and Lunette Ring Assembly and Coupler and Trailer Hitch Ball
    I do have a solution that I think will work for you. If you can mount a Bulldog channel to the front of the trailer, # BDAC5000300, then you could use a coupler like # BDA200C0317, AND use lunette ring # 337B16137 when needed. We also have the pintle hook combo # TR63041 for a 2 inch ball, # TR63042 for a 2-5/16 inch ball to adapter the vehicle end of the set up.
    view full answer...
  • Replacement Parts For An Interstate Trailer
    I can certainly point you in the right direction, but I am not able to reference a VIN and see specifications on your Interstate trailer. If only it were so easy, right? For a Lunette ring we have the channel mount # 337B16140 or a bolt on style # C48550. Both of these are rated for over 20,00 lbs and would be more than enough for your interstate trailer. We also have the ramp springs # RS16933RH for the right hand side, and # RS16933LH for the left side. These are 2K torque ramp springs...
    view full answer...

Do you have a question about this Lunette Ring?


Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Cole B
Installed by:
Cole B
Employee Randy B
Installed by:
Randy B
Employee Michael B
Installed by:
Michael B
Employee Chelsea B
Written by:
Chelsea B
Employee Wilson B
Updated by:
Wilson B
Employee Kristina F
Updated by:
Kristina F
Employee Isabelle B
Updated by:
Isabelle B
Employee Noah M
Updated by:
Noah M
Employee Zach D
Video by:
Zach D

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