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  7. Trunnion - 7 In Drop
Curt Weight Distribution Shank - 12" Long - 7-1/2" or 7" Drop - 1,500 lbs TW

Curt Weight Distribution Shank - 12" Long - 7-1/2" or 7" Drop - 1,500 lbs TW

Item # C17121
Retail:$170.83
Our Price: $129.57
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Shipping Weight: 30 lbs
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12" Tall shank offers a 7-1/2" drop or 11-3/4" rise when used with round-bar models, a 7" drop or 10-1/2" rise when used with trunion-bar models. Fits 2" trailer hitch receivers in both rise and drop positions. 1-636-306-4830 to order CURT accessories and parts part number C17121 or order online at etrailer.com. Free expert support on all CURT products. Guaranteed Lowest Price and Fastest Shipping for Curt Weight Distribution Shank - 12" Long - 7-1/2" or 7" Drop - 1,500 lbs TW. Accessories and Parts reviews from real customers.
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  • Reviews (21)
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CURT Accessories and Parts - C17121

  • Weight Distribution Hitch
  • Shanks
  • Fits 2 Inch Hitch
  • Round - 7-1/2 In Drop
  • Trunnion - 7 In Drop
  • CURT
  • 1500 lbs TW
  • Round - 11-3/4 In Rise
  • Trunnion - 10-1/2 In Rise
  • 15000 lbs GTW

12" Tall shank offers a 7-1/2" drop or 11-3/4" rise when used with round-bar models, a 7" drop or 10-1/2" rise when used with trunion-bar models. Fits 2" trailer hitch receivers in both rise and drop positions.


Features:

  • Shank slides into your hitch receiver and provides the attachment point for your weight distribution system's head assembly
    • Designed for use with Curt weight distribution systems
  • 9 Adjustment points for attaching the head assembly
    • Lets you level your trailer with your tow vehicle
  • Drop or rise positions available to fit your application
  • Black powder coated steel resists rust and corrosion


Specs:

  • Application: 2" x 2" trailer hitch receivers
  • Weight capacity: 15,000 lbs
  • Tongue weight: 1,500 lbs
  • Overall shank height: 12"
    • Holes are spaced 1-1/4" apart on center
  • Overall shank length: 16"
  • Maximum drop:
    • Round bar system: 7-1/2"
    • Trunion bar system: 7"
  • Maximum rise:
    • Round bar system: 11-3/4"
    • Trunion bar system: 10-1/2"
  • Distance from center of shank pin hole to back of adjustment shank: 11"
  • Distance from center of adjustment holes to center of shank pin hole: 12"
  • Distance from front of shank to center of shank pin hole: 13"


Dimensional Diagam



17121 CURT Weight Distribution Shank





Customer Satisfaction Score:


Customer Reviews

Curt Weight Distribution Shank - 12" Long - 7-1/2" or 7" Drop - 1,500 lbs TW - C17121

Average Customer Rating:  4.8 out of 5 stars   (21 Customer Reviews)

12" Tall shank offers a 7-1/2" drop or 11-3/4" rise when used with round-bar models, a 7" drop or 10-1/2" rise when used with trunion-bar models. Fits 2" trailer hitch receivers in both rise and drop positions.

by:

This shank was just what I needed for my application. The service and response time from etrailer was fantastic! I placed the order after 6:00pm Monday night, and had the box at my front door before noon on Wednesday. And, that was with standard (free) shipping.


Comments
I have used this shank on my Tahoe for a year. It has performed perfectly. It allows the hatch door to be openedclosed while the trailer is connected.
Michael - 12/12/2020


by:

Very nice product, exactly as described, very heavy duty. Quality is definitely 5 star. Ordered on a Sunday arrived on Wednesday, fast shipping as usual.




by:

My first try at 'RV Trailer' but after purchasing a used 31' Holiday Rambler I discovered I didn't like riding a Disney Tea Cup while pulling the trailer. Seems my receiver at 20" was actually 24" making the trailer tongue too high. My first order was not due to ship until after I left, contacted customer support and Vanessa researched my problems: Rock Tamers Heavy-Duty mud flaps and 4 inch drop. With the C17121 I modified the Rock Tamers and gained my drop with an extra 1.5" or one hole left. The customer service was beyond belief and the product arrive on time, packed as if it was an egg which was hard to do with all that solid steel, lots of solid steel. Overall 10 star experience for me...




by:

I couldn’t be happier with the product or the service. Shawn called me when there was an issue with delivery on the product I ordered and did an awesome job of finding an alternative. Outstanding!




by:

The shank is perfect for pulling an airstream trailer. Service is perfect too




by:

It fit perfectly on my lifted f250. Also it gave me enough flexibility because it's very adjustable so I'm very happy with the shank. I was able to use this shank with an existing weight alignment hitch that had circular bars for the weight distribution system. Thanks




by:

Received the hitch bracket and packaging was sufficience. The tongue is significantly longer than the standand tongue was. The bracket provided the correct drop I needed for my loadleveling hitch. It would have been better to see a picture of the bracket with dimensions prior to purchasing so I would have know what I was buying. It does work as designed.




by:

Hitch shank is for my new 2020 Ram 2500 and is exactly what I hoped for. Allows enough drop for level towing of my travel trailer. Nice surprise is I can open my tailgate with trailer hitched up. Ordered on Saturday and arrived Wednesday morning with free shipping. E-trailer comes through again, thanks.




by:

I am happy with this product. It allowed me to use a weight distribution hitch and drop it down low enough to keep the trailer level. It is heavy and well built. First time out I pulled a heavy trailer 1700 miles and it performed flawlessly.




by:

I have a 2001 Dodge Ram 2500 4x4. The drop down works great with my bumper pull 24’ trailer. The trailer rows well and sits level.




by:

Unbelievable service !! Cathy was awesome gave her the measurement for a drop hitch and she sent me exactly what I needed . Ordered on Wednesday at 9am and received it Thursday at 12pm . Everything was perfect. Unbelievable service!! Thank You !!




by:

Worked great for towing my camper with Jeep Wrangler Unlimited. The trailer tongue clears the spare tire now.




by:

Welds were not great. Voids and imperfect beads. Had to take to weld shop and pay to reinforce the welds. Welds weren't like the video or pictures. Didn't have time to send back because of impending Rv trip. So just reinforced the welds ground flat and repainted with Bed liner paint from rust oleum ????




by:

Works perfectly, bought it for my H2 because of the rear spare tire. Good buy!!




by:

I ordered, it arrived. So simple, yet sometimes doesn't work out so good. It worked out great! Thanks etrailer!




by:

Looking to add this to my setup since my stock shank only drops a total of 2". George J. You are the man!




by:

Received it quicker than anticipated. Great product.




by:

Works great. Needed for 3/4 ton truck which sat too high.




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See what our Experts say about this CURT Accessories and Parts

  • Compatibility of Curt Weight Distribution Shank with Reese Strait-Line Weight Distribution System
    Weight distribution shanks from Reese and Curt Manufacturing both use the same 1-1/4 inch hole spacing. Ideally, you'd want the manufacturer of the W/D system and the shank to match, but if Reese doesn't offer the specific rise/drop you need, you can use a Curt shank. I've linked you some articles about weight distribution that you might find helpful.
    view full answer...
  • Rise and Drop of Curt Weight Distribution Shank # 17121
    Curt measures rise and drop differently and they also round to the nearest whole number. We measure rise or drop from the top of the trailer hitch receiver opening to the top of the ball platform (or in this case to the top of the weight distribution head ball platform). And we do not round off the numbers.
    view full answer...
  • Can the Curt # C17121 Shank be Used with a Blue Ox Weight Distribution System
    Yes you can! All of our WD shanks, including the Curt # C17121 that you referenced, are compatible with other WD systems. The part where the head of your WD sits is 2" wide and the mounting holes are 1-1/4" apart on center. I have attached a review video for you to reference as well.
    view full answer...
  • Recommended 2" Weight Distribution Shank with 6 Inches Plus of Drop
    It sounds like you're looking for a weight distribution shank with more drop to level the trailer and if that's the case we may have an option for you. In order to see how much you need, measure from the ground to the top inside edge of the receiver on the vehicle and then from the ground to the bottom of the trailer coupler while the trailer's level. The difference between these two measurements will be your rise/drop requirements. The Curt Weight Distribution Shank part # C17121 for...
    view full answer...
  • Compatibility of Curt Weight Distribution Shank with Ultra-Fab Weight Distribution Hitch
    If the distance between the holes of your existing shank is 1-1/4 inches, center to center, either the Curt # 17120 or # C17121 shank would work fine for you. You'll want to choose the shank that places the trailer ball about 1 to 1-1/2 inches above level.
    view full answer...
  • Recommended Weight Distribution Adjustable Shank With More Drop To Tow Trailer Level
    The adjustable shank that came with the Pro Series Weight Distribution System PS49901 has a 6-inch rise and a 2-inch drop so you will need a replacement shank that has the drop you need. I recommend the Curt Weight Distribution Shank, part # 17120. This shank has a maximum drop of 6-1/8 inches or up to 10 inch rise with a round bar weight distribution system and should be just what you need. If you need more drop you can check out part # C17121. This adjustable shank has up to a 7-1/2...
    view full answer...
  • Which Weight Distribution Shank for 24 Inch Receiver Height and 17 Inch Coupler Height
    Ideally, you'll want your weight distribution head to sit about 3/4 to 1-1/2 inches higher than the level coupler height of the trailer to compensate for trailer squat. Since the difference in your coupler and receiver height is 7 inches, I'd recommend you go with a shank that offers at least a 6 inch drop, like the Curt # C17121. This would put your trailer ball about 1 inch above level, which would be absolutely perfect.
    view full answer...
  • Can I Use the Curt Weight Distribution Shank 17121 with a Curt TruTrack WDH
    Yes. You can use the Curt Weight Distribution Shank - 12" Long - 7-1/2" or 7" Drop - 1,500 lbs TW # C17121 with the Curt TruTrack Weight Distribution System w/ Sway Control - Trunnion - 10,000 lbs GTW, 1,000 lbs TW # C17500.
    view full answer...
  • Can Shank of Curt Weight Distribution C17499 be Replaced with One with More Drop
    Yes you can replace the shank of the Curt weight distribution system part # C17499 with one that has more drop so that your trailer can be towed level. For that the Curt part # C17121 would give you a drop of up to 7 inches.
    view full answer...
  • Will a Curt Shank Work with a Pro Series RB3 Weight Distribution System
    The Pro Series RB3 weight distribution systems use what can be considered as a standard shank so you can use a different shank with the system. The included shank offers 1-1/2 inches of drop from top of hitch receiver opening to the ball platform. Curt shank # C17121 will work but it offers up to 7-1/2 inches of drop on a round bar system from top of hitch receiver opening to the ball platform. Shank # RP3344 offers up to 8-5/8 inches drop on a round bar system and can only be used in...
    view full answer...
  • Will a Curt Shank Work with a Pro Series Weight Distribution System
    Yes, you can use the Curt shank # C17121 with your Pro Series weight distribution system # PS49901. Its shank and the Curt shank both have 3/4 inch diameter holes that are spaced 1-1/4 inches apart on center.
    view full answer...
  • 6 Inch Drop Weight Distribution Shank Recommendation for a Pro Series WD System
    I attached a link to the right that details how to pick out the correct rise/drop ball mount for you to check out. First we need to determine exactly how much drop you need. It sounds like you need 6 inches of drop. Which for a shank for your Pro Series Weight Distribution system that can do 6 inches of drop you would want the Reese Weight Dist Shank # RP63971 that you referenced as it can do a max of 6-1/2 inches of drop with a round bar WD system. If you have a trunnion bar setup you...
    view full answer...
  • Recommended Weight Distribution Shank for Triple Axle Trailer Towed by 2013 Suburban
    The first step is to ensure that the unloaded rear end of your Suburban is at factory ride height. If the rear suspension components are worn or damaged, have them replaced/repaired. The next step would be to determine the difference in the receiver height of vehicle and the coupler height of the trailer, when parked on level ground. Measure the distance from the inside top of the receiver tube to the ground, then measure the distance from the underside of the trailer coupler to the ground....
    view full answer...
  • Recommended Weight Distribution Shank for 5-1/2 Drop
    If the 21-1/2" measurement that you took on your 2018 Chevy Silverado is from the ground to the top of the inside of the trailer hitch receiver and the 16" of your trailer is from the ground to the bottom of your coupler then that means you need a drop of 5-1/2". The closest that we have to this measurement is the Reese # RP3215 which gives you a drop of 5-3/4" for a trunnion weight distribution (WD) system. You may also be interested in the Curt WD Shank # C17121 because it can provide...
    view full answer...
    Image 1 for
  • Shank With More Rise For Reese Steadi-Flex Weight Distribution System 66558
    It sounds like you simply need a weight distribution shank with more rise that will work with your Reese Steadi-Flex Weight Distribution System w/ Sway Control # RP66558 and that is definitely something available because weight distribution shanks are interchangeable between manufacturers. The shank that comes with your current Reese system has a maximum rise of 7-5/8" and maximum drop of 2-7/8" so what I recommend is using the Curt Weight Distribution Shank # C17121 which has a maximum...
    view full answer...
  • Recommended Weight Distribution Drop Shank For 4 To 5 Inch Drop On Husky Centerline System
    For your Husky Centerline weight distribution system I recommend the Husky Weight Distribution Shank - 10" Long - 4-1/2" Rise, 6-3/4" Drop # HT31518. For another cost effecient option, I recommend the Curt Weight Distribution Shank - 12" Long - 7-1/2" or 7" Drop - 1,500 lbs TW # C17121 which will also work well with your system.
    view full answer...
  • Selecting Replacement Shank for Curt Weight Distribution System
    All Curt 2-inch weight distribution shanks are displays on the linked page. These offer varying amounts of drop and rise depending on the type of system you have, round bar or trunnion bar. Curt shank # 17120 will give 6-1/8-inches of drop with round bars but only 5-3/4-inches of drop if your system uses trunnion bars. Overall height is 10-3/4-inches. 12-inch tall shank # C17121 offers 7-1/2-inches of drop with round bars and 7-inches with trunnions, as does the 10-inch tall shank # C17122.
    view full answer...
  • Troubleshooting a 2006 Honda Pilot With Sway Problem From a 4200 lb boat
    Judging by the picture you submitted it looks like your problem is that your ball mount is too high which is causing your trailer to not sit level. You need a ball mount with more drop than what you are currently using. I strongly urge you to check out the FAQ article I attached on determining the correct rise/drop ball mount for a setup and use the correct ball mount before you tow again. You might check your trailer suspension as well as broken suspension components can cause sway. The...
    view full answer...
    Image 1 for
  • Recommended Weight Distribution Shank to Tow 10,000 Pound Trailer with 2010 GMC Sierra
    According to your calculations, the difference between the receiver and coupler height is 5-1/2 inches inches, therefore a 7 inch drop shank with a 15,000 lbs weight capacity, like # C17121, should work well. I have attached a video review of this shank and a FAQ article about choosing the correct ball mount and determining the correct rise/drop for you to check out.
    view full answer...
  • Will Curt Weight Distribution Shanks Work with a Pro Series Round Bar Weight Distribution System
    Based on the hitch and coupler measurements you provided, you will want a weight distribution shank that will give you about 6 inches of drop. The Curt Weight Distribution Shank, # C17122, that you referenced will give you 6 inches of drop, but I recommend looking at the length of the shank. It is 16 inches long from the center of the hitch pin hole to the end of the shank. If you do not need a shank that long, you could use part # C17121. This is basically the same shank, but it is only...
    view full answer...
  • How to Determine Correct Drop for Weight Distribution Shank
    To find the correct rise or drop what you need to measure is the from the ground to the top of your hitch receiver opening, which it sounds like you have done and got 25-1/2". You also need to measure from the ground to the bottom of the coupler. You said the trailer is 18-1/2" off the ground so you just want to be sure this measurement is to the bottom of the coupler. The correct drop for a weight distribution shank will be the difference between the hitch height and coupler height, which...
    view full answer...
  • Shank With 5 Inch Drop Compatible With Reese Steadi-Flex RP66558
    There are shanks with the drop you need that are compatible with the Reese Steadi-Flex Weight Distribution System with Sway Control # RP66558. Weight distribution shanks are interchangeable so what you can use is the Curt Weight Distribution Shank # C17121. This shank has a maximum of 7 inches of drop with a trunnion bar system like the Steadi-Flex so it's exactly what you need. Additionally, the Steadi-Flex is compatible with your 2 x 6 frame and top-mounted coupler, so the only other...
    view full answer...
  • Weight Distribution Shank for Fastway e2 with More Drop and Longer Shank than Included Shank
    I can certainly help you choose a weight distribution shank that will offer you more drop and stick out further from the trailer hitch receiver. Since the shank that comes with the Fastway e2 # FA92-00-1000 offers a 1-5/8 inch drop and you need an additional 3 inches of drop, I found 2 different weight distribution shanks that I recommend, as they offer approximately 5 inches of drop and will sit further away from your truck. The Curt Weight Distribution Shank, 12 Inches Long # C17121...
    view full answer...
  • Recommended Weight Distribution System Drop Shank for Pro Series Round Bar System
    The Pro Series Weight Distribution System # 49570 you mentioned only has a maximum 2 inch drop with the shank that comes with the system. You most definitely need a longer shank for the height of your truck compared to your trailer coupler height. I recommend the Fastway e2 Weight Distribution Shank - 12" Long - 12-1/2" Rise 9-3/4" Drop - 1.2K TW # FA92-02-4315 which will give you the drop needed and will also accommodate the tongue weight of your system. You can alternatively use the...
    view full answer...


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