1. Weight Distribution Hitch
  2. Reese
  3. 500 lbs
  4. 600 lbs
  5. 700 lbs
  6. WD Only
Reese Weight Distribution System w Shank - Trunnion Bar - 15,000 lbs GTW, 800 lbs TW

Reese Weight Distribution System w Shank - Trunnion Bar - 15,000 lbs GTW, 800 lbs TW

Item # RP66541
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Weight Distribution Hitch
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Reese WD Only - RP66541
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In Use/Installed

Is this right for you? Product Expert Lindsey S says:

Yes, if you:

  • Have a trailer with 400 lbs – 800 lbs of tongue weight
  • Don't typically have a problem with trailer sway
  • Might want to upgrade to Reese's dual-cam sway control down the line

No, if you:

  • Want sway control out of the box
  • Have a trailer frame wider than 2-1/2"
High-performance system is designed to offer the best in weight distribution with an easy-to-adjust, forged head; a raised ball platform; and flexible, powder coated steel, trunnion spring bars. Adjustable shank included. Hitch ball sold separately. Lowest Prices for the best weight distribution hitch from Reese. Reese Weight Distribution System w Shank - Trunnion Bar - 15,000 lbs GTW, 800 lbs TW part number RP66541 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
  • All Info
  • Reviews (6)
  • Q & A (75)
  • Photos
  • Why etrailer?

Reese Weight Distribution Hitch - RP66541

  • 500 lbs
  • 600 lbs
  • 700 lbs
  • WD Only
  • Reese
  • Fits 2 Inch Hitch
  • Includes Shank
  • Electric Brake Compatible

High-performance system is designed to offer the best in weight distribution with an easy-to-adjust, forged head; a raised ball platform; and flexible, powder coated steel, trunnion spring bars. Adjustable shank included. Hitch ball sold separately.


Features:

  • Evenly distributes weight over axles of tow vehicle and trailer for stability and control
    • Creates a more level ride for both tow vehicle and trailer
  • Trunnion spring bars are hot rolled and tapered for superior strength and flexibility
    • Bars flex appropriately over uneven terrain for a controlled, even ride
    • Curved ends are designed for use with dual-cam sway control (RP26002 - sold separately)
  • Adjustable spring-bar tension - just switch links in lift chains to fine-tune
  • Desired tilt is easily achieved with serrated-washer design - no more piling on washer after washer
  • Forged, raised ball platform on head eliminates need for raised hitch ball
  • Solid steel shank has corrosion-resistant powder coat
  • System includes head assembly, adjustable shank, lift brackets, trunnion spring bars, lift chains, pin and clip, and all necessary hardware
    • Hitch ball sold separately - requires 1-1/4" diameter shank


Specs:

  • Tongue weight: 800 lbs
  • Gross towing weight: 15,000 lbs
  • Fits: 2" x 2" trailer hitch receivers rated for use with weight-distribution systems
  • Lift-bracket positioning: mount about 30" back from hitch ball
    • Requires approximately 5-1/2" of space along trailer frame
      • Optional mounts (sold separately) that take up less space on a trailer frame are available
    • Will not fit trailer frames wider than 2-1/2"
  • Shank length: 14" from center of hitch pin hole to center of ball hole
  • Total height adjustment along shank: 5-1/4"
    • Maximum rise: 6-1/2" from top of hitch receiver opening
    • Maximum drop: 1-1/4" from top of hitch receiver opening
  • Limited lifetime warranty


Included w/ RP66541Required - Sold SeparatelyOptional Add-Ons
  • Adjustable Shank
  • System Head
  • Lift Brackets
  • Spring Bars
  • Hitch Ball w/ 1-1/4" Diameter Shank
  • Bar-Style Friction Sway Control
  • Dual-Cam Sway Control

Weight Distributing Hitch

Create a stable ride for your tow vehicle and trailer with a weight-distribution hitch. Adding spring bars to your towing system applies leverage, which transfers the load that is pushing down on the rear of your vehicle to all the axles on both your tow vehicle and your trailer, resulting in an even distribution of weight throughout. The result is a smooth, level ride, as well as the ability to tow the maximum capacity of your hitch.



Selecting a Weight-Distribution System

The tongue weight rating is the most important factor in determining which size weight-distribution system you should use. If the bars of the system you choose are rated too high for your setup, they will create a rigid ride, which can result in a bouncing trailer. If, on the other hand, the bars are not rated high enough, the system will be unable to properly distribute the weight, rendering it virtually useless.


To determine the proper weight rating for a weight-distribution system, you must first determine your trailer's tongue weight. Then add to that the weight of the cargo behind the rear axle of your tow vehicle. These two measurements make up the tongue weight rating for a weight-distribution system.

Serrated Washer System

Unique Features of Reese Trunnion-Bar Weight Distribution

The easy-to-use, serrated washers on the Reese system make adjusting the tilt of the weight-distribution head a snap. This is a huge improvement over the standard pin-and-washer method, which involves piling washers - one on top of another - onto a difficult-to-access pin. The serrated-washer system lets you easily loosen, adjust and tighten a single washer and nut on either side of the head for simple, secure positioning.



The trunnion spring bars of this system slide into the weight-distribution head for quick, easy installation. With a tapered design and hot rolled steel construction, these bars offer superior flex, ensuring a smooth, controlled ride for both your tow vehicle and your trailer. In addition, these specially designed bars have rounded, hooked ends, making them the only kind of spring bars that can function with Reese's active-style, dual-cam sway control (sold separately).



66541 Reese Trunnion Bar Weight Distribution Hitch with Hitch Bar

Installation Details RP66541 Installation instructions


California residents: click here



Customer Reviews

Reese Weight Distribution System w Shank - Trunnion Bar - 15,000 lbs GTW, 800 lbs TW - RP66541

Average Customer Rating:  4.3 out of 5 stars   (6 Customer Reviews)

High-performance system is designed to offer the best in weight distribution with an easy-to-adjust, forged head; a raised ball platform; and flexible, powder coated steel, trunnion spring bars. Adjustable shank included. Hitch ball sold separately.

- RP66541
by:

Called talked to katie D she kept me on the phone until I was sure that product was for me.From that point on all the way to delivery it was a perfect transaction. 184303



- RP66541
by:

Excellent gear for towing a heavy boat. Well made. Used with the Reese Pole-Tongue Adapter. 178943



- RP66541
by:

After spending two hours setting this up I was disappointed to find that I need a different hitch bar. as the supplied one did not drop enough for me to achieve a level trailer. Now I have to order another hitch bar at $ 140. It would have been nice to know ahead of time that you should measure down from the top of your receiver box to the approx trailer coupler height ( w leveled trailer) to determine if you have sufficient drop or rise. I now have an extra hitch bar I do not need. 78080


Comments
Question please, who told you to buy the hitch bar you received? The videos on this site are clear and would lead you order the correct componets.
-- comment by: Howard S - 06/15/2014

4902

- RP66541
by:

Product is exactly as described. We ended up not being able to use the trunnion bars because the trailer we rented had the propane tanks mounted such that they prevented us from attaching the bars. But we ultimately didn't need them since the trailer was a light weight one. I'm pleased to have this product since we don' t know what we might tow in the future. I like that it will also be easy to add the Reese sway controllers in the future if needed. I know comments are supposed to be about the product itself, but I have to say the best part of buying it was the fantastic & knowledgeable customer service that Etrailer provided in helping me choose the best product for my needs ( I ordered by phone). 37979



- RP66541
by:

Received product before the tracking info. was available. Two days..WOW.. The price match was more than I asked for. Just wanted them to meet the competition, not beat them up!! If ETrailer has it, I'm a customer for life. 17491



- RP66541
by:

Thanks for the great service, I was very surprised how fast my hitch got to me, Three days WOW. Thanks for the great service and i will be doing bussiness with you again. 9664


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Ask the Experts about this Reese Weight Distribution Hitch

  • How to Choose a Trailer Sway Control Solution
    The anti-sway solution you need will depend on the weight, length and trailer you're towing. If you're towing a smaller flatbed utility type trailer that gets a little unstable from time to time, and moving more tongue weight to the front of the trailer isn't improving the swaying condition, then an entry-level solution like the Reese Friction Sway Control, part # 83660 would be a good choice. For trailers longer than 25 feet, you can actually use two units, one on each side if necessary....
    view full answer...
  • Weight Distribution System Recommendation for 8,000 lb Trailer
    Your loaded tongue weight is most likely going to fall between 800 and 1,200 lbs so a system like the part # RP66541 would be rated too low. Because of that the best option is going to be the Strait Line part # RP66130 which has a tongue weight range of 800 lbs - 1,500 lbs. This also features the only sway control available that works to fight sway before it starts. You will also need a shank to go with this like part # RP54970. For a 2 inch ball you would want part # A-90 and...
    view full answer...
  • How Much Weight Gets Transferred To Trailer Axles and Vehicle Front Axle with Weight Distribution
    The key to weight distribution is not to have an exact percentage of the weight transferred to either of the axles. The whole goal behind all of if it is to have your tow vehicle sit as level as possible so that it will brake and handle the best possible. Since that is the goal and different vehicles have different spring rates and wheelbases the percentages distributed to each axle won't be uniform between setups. An exact figure can't be given although some claim that when properly...
    view full answer...
  • Weight Distribution System Recommendation for a Pontoon Boat Trailer with 500 lbs Tongue Weight
    For a weight distribution system I would recommend the # RP66541 as it has a tongue weight range of 400-800 lbs which would be perfect for your 500 lbs of tongue weight. Since you have a boat trailer that is going to have a pole tongue style trailer frame you are going to need to use a pole-tongue adapter part # RP3280 to provide the attachment point for the spring bars of the WD system. For a 2 inch ball you would want part # A-90 and for a 2-5/16 inch ball # 19286. Before you...
    view full answer...
  • Weight Distribution Recommendation for Trailer with Dry Weight of 3,000 lb
    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. Most likely you'd have a tongue...
    view full answer...
  • Recommendation for Weight Distribution and Sway Control to Haul a Utility Tractor with 1999 Tacoma
    I would definitely recommend weight distribution and making sure that the weight on the trailer is within the trailer capacity and that the trailer fully loaded and ready to tow is within the capacity of the lowest rated item whether it be the hitch, vehicle (see owners manual), ball mount or ball. If all of the above works out I would start out with a quality weight distribution system that can be upgraded to dual cam sway control if needed in the future. That way you can add the sway...
    view full answer...
  • Weight Distribution System Recommendation for Trailer with 600 lb Tongue Weight
    The great thing about weight distribution systems is that the weight of them does not get considered as additional tongue weight. Our manufacturers have fielded this question from us several times and their stance is that the WD system essentially becomes part of the hitch so you would not consider it's weight as additional tongue weight. We have the Reese system part # RP66541 which weighs 74 lbs and has a tongue weight range of 400 to 800 lbs like what would work well on your trailer. For...
    view full answer...
  • Weight Distribution System Recommendation for a 19 foot Travel Trailer
    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 an FAQ on determining tongue weight for you to check out as well. Typically tongue weight is 10-15 percent of the total trailer weight. For your trailer at 3,500 lbs that would put you at 525 lbs of tongue weight. For a system rated for...
    view full answer...
  • Recommended Weight Distribution for Forest River Rockwood Premier 2516G Towed By 2000 Pathfinder
    To choose a weight distribution system, you'll need to first determine the fully loaded and ready to tow tongue weight of your trailer. To that figure, add the weight of any gear stowed in the cargo area of the SUV or truck bed behind the rear axle. I've linked to an FAQ article that explains how to do this. These combined figures comprise the Total Tongue Weight (TTW) of your set-up. The TTW of your trailer should fall as close as possible to the middle of the effective range of the weight...
    view full answer...
  • Recommended Parts for Towing a Starcraft Antigua Trailer with a 2004 Chevrolet Trailblazer
    The weight distribution you were looking at, part # RP66541, will carry over to a new F-150. You may need to get a different height shank or adjust head angle or spring bar tension, but everything else will be able to be used. Does the owner manual state the vehicle has different capacities with a weight distribution system? Some vehicles have two ratings listed in their owner manual. If the manual states different figures for weight distribution, please write back and let me know. If...
    view full answer...
  • Does 2017 Ram 1500 Need Weight Distribution to Tow 3,300 lb Trailer
    If the trailer you plan on towing weighs more than half of the weight of the tow vehicle we recommend the use of weight distribution. 3,300 lbs is going to be more than half the weight of your 2017 Ram 1500 so you will see benefits from using a WD system. You'll see less suspension sag and have better braking and handling. Is it absolutely necessary though? Probably not, but if you are looking for the best and safest towing experience it's a really good idea. The best way to pick out...
    view full answer...
  • Recommended Weight Distribution System for 2003 Dodge Dakota Towing 5000lb Thor Wanderer
    Weight distribution systems are classified by the range of trailer tongue weights they can handle. An important first step is determining your actual trailer tongue weight when it is fully loaded and ready to tow. I will link you to an FAQ article that explains a few ways to do this. At a maximum trailer weight of around 5000 lbs, the tongue weight is typically 10-15 percent of the trailer weight, which gives a range of 500 to 750 lbs. The weight of anything stowed behind your rear truck...
    view full answer...
  • Weight Distribution Recommendation for V-Nose Trailer with 400-600 lb of Tongue Weight
    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. So for a system that would work...
    view full answer...
  • Recommended Weight Distribution System For Popup Camper With Frame Mounted Propane Tank
    When you consider a weight distribution system for your popup camper the most important thing you will need to know is the tongue weight. Tongue weight is the tongue weight of your fully loaded trailer added to the weight of any cargo placed behind the rear axle of your Silverado. I will make a couple of recommendations based on the number you gave me. I recommend the Reese Weight Distribution System, part # RP66541. This system has a towing weight capacity of 10,000 lbs and a tongue...
    view full answer...
  • Parts Recommendation to Flat Tow a 2005 Chrysler Pacifica
    To flat tow your 2005 Chrysler Pacifica the first thing you will need is a base plate kit. For that you would want the Roadmaster base plate kit part # 268-1. This will provide the attachment point for the tow bars to the vehicle. In addition to the base plates, you will also need a compatible tow bar, safety cables, lighting, and supplemental braking to flat tow your vehicle. The most popular compatible tow bar is the Falcon 2, # RM-520. For safety cables you can use # RM-643. The coiled...
    view full answer...
  • What Is Combined Weight Of The Shank And Head Of Reese Weight Distribution System # RP66541
    The shank on the Reese Weight Distribution System, part # RP66541 weighs 15 lbs, and the head weighs 19 lbs, so the combined weight of these 2 items is 34 lbs.
    view full answer...
  • When Is Weight Distribution Recommended
    If the trailer you plan on towing weighs more than half of the weight of the tow vehicle we recommend the use of weight distribution. The best way to pick out a weight distribution system is to base it off of the loaded tongue weight of the setup. You should note that the weight of any cargo behind the rear axle of your vehicle should be considered tongue weight as well. I attached an FAQ on determining tongue weight for you to check out. Once you determine you tongue weight you can...
    view full answer...
  • Lightest Weight Weight-Distribution System Recommendation for 540 lbs of Tongue Weight on Trailer
    The lightest weight weight distribution system we offer that would be recommended for your trailer with 540 lbs of tongue weight would be the Reese Weight Distributions System part # RP66541. This system includes a shank and only weighs in at 69 lbs with a ball. Which is much lighter than the other systems. The weight of just the spring bars and head assembly plus shank would be right at 62 lbs. For a hitch ball you would want the part # 19286.
    view full answer...
  • Weight Distribution System Recommendation for a Fleetwood Evolution E1 Pop-up Camper Trailer
    The unique frame on the Fleetwood Evolution E1 camper trailer is going to require a special set up for weight distribution. You will need to do is use a system that hangs the spring bars from chains and then use special brackets that attach to the side of the frame rather than clamp onto the top. For a system rated for 400 to 800 pounds tongue weight, you could use # RP66541, and then use chain hangers, # RP58305. The chain hangers will fit on frames no wider than 2-1/4 inches unless...
    view full answer...
  • Trailer Hitch and Weight Distribution System Recommendation for a 2011 Hyundai Santa Fe
    If you can make sure the 2009 Jay Feather Sport 165 Travel Trailer that you are interested in will stay below the tongue weight of your hitch with a WD system then the hitch would be fine to tow the trailer. You would then also need to check the owners manual of your vehicle to determine it's towing capacity and be sure to go by the lower figure as the overall capacity. We offer a trailer hitch for your Santa Fe # 75684 that can be used with a WD and has a TW of 500 lbs. The best...
    view full answer...
  • How to Pick Out Weight Distribution System for Horse Trailer that Will have Varying Tongue Weights
    You are on the right track. You want to pick a weight distribution system that the tongue weight range of your trailer will fall right into the middle of. The amount of chain links on a system like the # RP66541 is how the spring tension is adjusted. This system has a range of 400 to 800 lbs of tongue weight and would have a pretty good chance of covering all of your tongue weight range. You will need to confirm this first though. I attached an FAQ article on determining tongue weight...
    view full answer...
  • Weight Distribution System Recommendation for a Ford Escape Towing a Small Trailer to Help w Sway
    I would recommend going with a weight distribution system to go along with the friction sway control that you already have. The Reese WD system part # RP66541 will fit your loaded tongue weight of 540 lbs well and will help quite a bit with sway from passing 18 wheelers. It even has a tab on the head for you to install your friction sway ball. For a 2 inch ball you would want part # A-90 and for a 2-5/16 inch ball # 19286. Be sure to check the owners manual of your Escape and not...
    view full answer...
  • Weight Distribution System Recommendation for Towing Trailer that Weighs 4,855 lbs
    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. Since tongue weight can be 10...
    view full answer...
  • Weight Distribution Recommendation for 2014 Ram 1500 Towing 5,700 lb Trailer
    Anytime the weight of the trailer is more than 50 percent of the weight of the tow vehicle a weight distribution system will be a great idea. You are at that figure easily so you would benefit from using a WD system. 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...
    view full answer...
  • When To Use a Weight Distribution System When Towing with a 2011 Honda Odyssey
    If the trailer you plan on towing weighs more than half of the weight of the tow vehicle we recommend the use of weight distribution. For your vehicle/setup I would strongly recommend a WD system. Especially considering how many passengers and cargo you will be carrying. The best way to pick out a weight distribution system is to base it off of the loaded tongue weight of the setup. You should note that the weight of any cargo behind the rear axle of your vehicle should be considered...
    view full answer...
  • Best Economically Priced Weight Distribution System for KZ Spree 230 RBS
    The best weight distribution system we offer near the price range you listed is the Reese system part # RP66541. This is a trunnion bar system which is preferred over the round bar systems. As long as your loaded tongue weight falls in the range of this system (400-800 lbs) it would be ideal for you. This system comes with a shank and allows backing up. 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...
    view full answer...
  • 2015 Jeep Grand Cherokee 4×4 Brake Controller and Weight Distribution Recommendation
    Sorry to hear about the problems you had so far, but we definitely can help. To install a brake controller in your 2015 Jeep Grand Cherokee that now has a factory 7-way installed will only require the correct brake controller install harness. For example if you installed our Prodigy P2 # 90885 which is basically the best controller available all you would need is the install harness part # 3045-P to install it. When Jeep installed the factory 7-way on your vehicle they would have...
    view full answer...
  • Quietest Weight Distribution System for Trailer with 600 lb Tongue Weight
    Weight distribution systems all make at least some noise due to all of the spring bar tension in the system combined with the fact that the parts move as the vehicle turns. So the quietest option will be a system like the Reese part # RP66541 which doesn't have any friction sway control built into it and uses chain hangers for the spring bars instead of L-brackets that the spring bar would slide on and create noise. This system has a tongue weight range too of 400-800 lbs so it would be...
    view full answer...
  • Reese Trunnion Weight Distribution Recommendation for Trailer with Tongue Weight of 400 lbs
    For a Reese weight distribution system recommended for use with a tongue weight of 350-400 lbs the part # RP66540 would be a great choice as it uses trunnion spring bars and has a tongue weight range of 200 lbs - 600 lbs which would be perfect for you. You should note that the weight of any cargo behind the rear axle of the tow vehicle counts as tongue as well. For a 2 inch ball you would want part # A-90 and for a 2-5/16 inch ball # 19286.
    view full answer...
  • Weight Distribution Recommendation for Car Hauler that Will See 400 to 700 lbs
    For a weight distribution system that would have a tongue weight range that fits between 400 and 700 lbs the part # RP66541 would be the best option. It has a tongue weight range of 400 to 800. You should note that you will have to set the system for each of the tongue weights that the trailer will see so that it works properly. For a 2 inch ball you would want part # A-90 and for a 2-5/16 inch ball # 19286. For additional frame brackets you would need the part # RP6637. For chains...
    view full answer...

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Info for this part was:

Expert Research:
Mike L
Expert Research:
Jameson C
Written by:
Lindsey S
Video Edited:
Jacob T
Updated by:
Laura H
Updated by:
Sarah W
Updated by:
Alexander C
Updated by:
Amanda M
Updated by:
Mike S
Updated by:
Isabelle B
Video by:
Dustin K
Installed by:
Cole B
Installed by:
Hayden R

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