bing tracking image
  1. Accessories and Parts
  2. Reese
  3. Weight Distribution Hitch
  4. Head
  5. Trunnion Bar
Reese Pro Series RB2 Weight Distribution Head

Reese Pro Series RB2 Weight Distribution Head

Item # 58333
lowest price pledge
Our Price: $156.00
You Save: $111.81
Accessories and Parts
This item qualifies for Free Shipping
Shipping Weight: 20 lbs
In Stock
Reese Weight Distribution Hitch - 58333
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

Need help with installation?
Locate installers near me
Replaces the weight distribution head for your Pro Series round or trunnion bar weight distribution system. 1-800-496-5010 to order Reese accessories and parts part number 58333 or order online at Free expert support on all Reese products. Guaranteed Lowest Price and Fastest Shipping for Reese Pro Series RB2 Weight Distribution Head. Accessories and Parts reviews from real customers.
  • All Info
  • Reviews (19)
  • Q & A (0)
  • Photos
  • Why etrailer?

Reese Accessories and Parts - 58333

  • Weight Distribution Hitch
  • Head
  • Trunnion Bar
  • Reese

Replaces the weight distribution head for your Pro Series round or trunnion bar weight distribution system.


  • Replaces the weight-distribution head for Pro Series weight distribution systems:
    • Round bars: 49568, 49569 and 49570
    • Trunnion bars: 49585, 49586 and 49587
  • Requires a hitch ball with 1-1/4" diameter shank (sold separately)
  • Quantity: 1 replacement weight distribution head

58333 Reese Pro Series RB2 Weight Distribution Head

California residents: click here

Customer Reviews

Reese Pro Series RB2 Weight Distribution Head - 58333

Average Customer Rating:  4.9 out of 5 stars   (19 Customer Reviews)

Replaces the weight distribution head for your Pro Series round or trunnion bar weight distribution system.


very helpful Both parts were right and a sincere thankyou


Perfect Fit! Works great! I initially ordered incorrect part by myself. I contacted customer service rep. Kevin D and requested a return label. This was completed without any hesitation. He them helped me select and order the correct part.
Great Service! And Fast Shipping!
I will definitely be a repeat customer!

After one year everything is still working great.
Joel R - 07/11/2018


Great product. Quality construction and Versatile in applications. This Reese Head replaced my older Hidden Hitch Head. I am able to use my old weight distribution bars, anti-sway cams and anti-sway friction bars. It saved me a small fortune in that the only thing that I had to replace was the Head itself. One year in I have zero complaints and product has performed flawlessly.


I have the Pro Series Weight Distribution system and two vehicles that I use with different hitch heights. I got tired of having to adjust the height on the head so I just bought I am set!!!! I love this website and company!!


This a very good product for the price. I am very happy with the purchase.

Great I would not want to be with out it.
Eric C - 02/25/2018


I needed to duplicate a trailer hitch, and I was able to find all the parts I needed. I like this product because it is heavy duty and will except my load bars.


Awesome. Got the part I needed and fast delivery. You guys rock!!


Exactly what I needed and ordered. Shipped and delivered as promised. Will definitely order from etrailer again.


Great product. Never comes off my truck. Pulls great


i just recieved the hitch and shank and am pleased with them, even though i knew that from reese they would be of good quality. i am, however, very impressed with your service and customer handling. in this day it is refreshing to do business with someone who really cares. thank you very much.


Products arrived a day earlier than forecast. Item was just as described and in perfect condition.


It's identical to the original I'm replacing. Fast shipping and a great price


Fast delivery


It was exactly as advertised


Needed just a hitch head. Etrailer has an exact match and the Price was great. Received it right on top and the quality appears to be excellent. Would definitely recommend


Exactly what was ordered and it was on time





See what our Experts say about this Reese Accessories and Parts

  • What Trunnion Bar Systems is Reese Pro Series RB2 Weight Distribution Head a Replacement For
    The best I can offer is telling you exactly what trunnion bar systems the Reese Pro Series RB2 Weight Distribution Head # 58333 is a replacement for. There aren't any 1,400 lb tongue RB2 trunnion systems, the max is 1,200 lbs, which you'll want to keep in mind, but the # 58333 is a replacement for the following: - Max 600 lb tongue weight Pro Series Trunnion Style Weight Distribution 49585 - Max 800 lb tongue weight Pro Series Trunnion Style Weight Distribution 49586 - Max 1,200 lb tongue...
    view full answer...
  • 1,200 lb Tongue Weight Spring Bars for Pro Series RB2 Weight Distribution Head
    The correct 1,200 lb tongue weight spring bars for the Pro Series RB2 weight distribution head # 58333 you referenced are the part # 58338.
    view full answer...
  • Spring Recommendation for Pro Series Weight Distribution Head
    You have the Pro Series weight distribution head part # 58333 which means the correct replacement spring bars you need are the part number # 58338 which has a tongue weight range of 600-1,200 which which would work great with a trailer that weighs 7,000 lbs.
    view full answer...
    Image 1 for
  • Draw Tite 81519 Bars Incompatible with Pro Series Head
    I reached out to my Pro Series rep at Horizon Global (parent company to draw tite). We found an installation diagram for your weight distribution system and determined the clips on the older head unit are not the same as the newer ones. Your bars would not be compatible with the Pro Series Head item # PS58442 and we do not sell those replacement bars. I recommend upgrading your current weight distribution system to a newer model the Reese Pro Series RB2 Weight Distribution Head item # 58333.
    view full answer...
  • Reese Weight Distribution Head to use With Trunnion 21210 Bars
    I reached out to Reese for you, and while we do have a solution, they told me you would not be able to use the Reese Pro Series RB2 Weight Distribution Head # 58333. What they said you could use is the Replacement Head for Reese Weight Distribution System - Trunnion Bar # RP58167. They told me that this will fit all Reese trunnion bars, including the older ones, though it is possible that the older-style bars like you have may be a "little loose" in fit, though they will still work. I...
    view full answer...
  • How do I Set up my Old Pro Series Weight Distribution System on my New Vehicle
    Your cheapest alternative would certainly be to use the Pro Series Weight Distribution Shank - 11" - 12,000 lbs part # 63911 and Reese Pro Series RB2 Weight Distribution Head part # 58333 to have a second vehicle kit sort of. THiss will allow you to use your current trunion bars and set up the hitch height for the new towing vehicle. I see you use friction sway control so getting the Reese Friction Sway Control Kit - Economy part # 83660 will give you what you need for that as well....
    view full answer...
  • Will Reese Round Spring Bars Fit a Pro Series Weight Distribution Head
    Only the RB2 head, # 58333, is the same between certain Reese systems and Pro Series systems so head # PS58442 will not work with the Reese round spring bars. If you can tell me the part number of the Reese system you have I can look up which head fits it.
    view full answer...
  • Where do the Pads that Come with the Pro Series Weight Dist Replacement Hardware # PS58339 Fit
    The black pads that come with the Replacement Head Mounting Hardware # PS58339 fit on the side of the Weight Distribution (WD) head. Attached is a picture of the Reese Pro Series RB2 Weight Distribution Head # 58333 where you can see that I highlighted the grooves that the pads fit to.
    view full answer...
    Image 1 for
  • Pro Series Snap Up Handle Associated with part # 113913
    What you are looking for is the snap up handle # RP58162 which we have confirmed with Reese/Pro Series as being the correct handle you'd need. The head and picture you sent in a picture of is the Pro Series RB2 part # 58333.
    view full answer...
    Image 1 for
  • Replacement Head Recommendation for a Reese 61009 Weight Distribution System
    The correct replacement head you would need for your Reese 12k round bar weight distribution system you have is the part # RP58112 and not the part # 58333 that you referenced.
    view full answer...
  • Can Dual-Cam or SC Friction Sway Control be Added to a Pro Series Weight Distribution System
    The Pro Series head, # 58333, will accept round bar # 58336, but the bar doesn't actually have a bend in it to use dual-cam sway control and it doesn't have the right design to use the SC style friction pads. Your best option is to use the bar style friction sway control with the new bars. Or you could replace the weight distribution system you have with a new one with the type of sway control you want such as the Strait-Line system # RP66072.
    view full answer...
  • Strait Line Weight Distribution Recommendation for a Trailer with 1,200 lbs Tongue Weight
    Most likely you do not have the # 58333 WD head since you said you have round bars and this head is designed for trunnion bars. Without knowing exactly what head you have it would be hard for me to know for certain what bars you would need and if they would be compatible with dual cam sway control. What I think is actually going on is that you are using a WD system that isn't rated high enough for how much your trailer weighs. The highest rated Reese round bars are for 1,200 lbs tongue...
    view full answer...
  • Will the # RP58112 Weight Distribution Head Work With a Pro Series Round Bar System
    The Reese Heavy Duty Round Bar Replacement Head, item # RP58112, will work with your Pro Series weight distribution system if the adjustment washers are 6 sided silver washers with no ridges. If you have rectangle adjustment washers that are black and have 3 ridges on them then you will need the Reese Pro Series RB2 Round Bar Replacement Head, item # 58333.
    view full answer...
  • Compatibility of Weight Distribution Head and Shank Parts from Different Brands
    Most weight distribution heads and shanks are interchangeable between brands since they use a standardized hole size of 3/4-inch and a center-to-center hole spacing of 1-1/4-inches. The Pro Series head assembly # 58333 and the Curt shank # C17125 are compatible. The shank has a weight rating of 15K and the specific spring bars in your Pro Series system will also have a weight rating that must be appropriate for the trailer tongue weight.
    view full answer...
  • Can Reese Pro Series RB2 Weight Distribution Head 58333 Fit Shank RP3214
    Yes the weight distribution head part # 58333 does fit the weight distribution shank part # RP3214 that you also mentioned. It will still work as a ball mount without the spring bars connected as well. This would not affect any towing capacities either.
    view full answer...
  • Recommended Replacement Trunnion and Pin for Reese Weight Distribution Systems
    The Replacement Trunnion and Pin for Reese 600 and 800 lb Trunnion Style Weight Distribution # 58098 is very similar to the Replacement Trunnion for Pro Series weight distribution 700 lb TW # 113397. You are correct that they both accept 1-1/8 inch trunnion bars, but they have a difference of 8 degrees in angle so they are not compatible with the same head according to my tech contact at Reese. The Pro Series 113397 is no longer available only compatible with the Head 49578 which has...
    view full answer...
  • Replacement 600 Pound Spring Bar for a Pro Series Weight Distribution System
    If your trailer is only 3,000 pounds then the 1,200 pound spring bars are going to be much to heavy for the trailer. The system will not be effective, it will create a very stiff ride, and it could damage the trailer. You will need bars for a tongue weight of 200 to 600 pounds to get the benefits of a system. There are several different Pro Series systems though. If the head looks like # 58333 then you can use bar # 58344. The bars are sold individually. This head style will accept round...
    view full answer...
  • Replacement Spring Bars for a Pro Series RB2 Weight Distribution System
    For the Pro Series RB2 system and its head, # 58333, there are different spring bars you could use. You need to go by the total tongue weight of the set up. This is the tongue weight of the trailer when loaded and ready to tow plus the weight of anything loaded behind the rear axle of the vehicle. For a 3500 pound trailer and a tongue weight of 10 to 15 percent you are looking at 350 to 525 pounds. You can use Item # RP58114 for 1 round bar with the cam end. These are rated for a tongue...
    view full answer...
  • Will Valley Replacement Weight Distribution Head Work With Pro Series Round Bars
    I do have a replacement weight distribution head available for your Pro Series round bar weight distribution system, but the Valley Replacement Head will not work with Pro Series round bars. I contacted our representative at Reese, and he informed me that there are 2 possible weight distribution heads that will work for your Pro Series round bars. If you have the older model head, which has one ear on the head, you will need Replacement Head, part # RP58112. If have the newer model weight...
    view full answer...
  • Replacement Spring Bar for a Pro Series V-5 Hitch 113913 Weight Distribution System
    The Pro Series V-5 Hitch 113913 is an older weight distribution system that is not available anymore and has limited replacement parts. It uses the Pro Series RB2 item # 58333 head and the only available replacement spring bar is the Replacement Round Spring Bar for Reese Weight Distribution System - 800 lbs TW item # RP58114.
    view full answer...
  • Can Dual-Cam Sway Control be Added to an Older Reese Weight Distribution System
    You have a very old system there! You would not be able to add dual-cam sway control # RP26002 to this system. Dual-cam systems require the bars with the cam hook ends and will not work with tapered straight bars. The system would not be a # PS49582 because that is a newer system with round bars, not trunnion bars. If the head that holds the ball looks like # 58333 with those 2 smaller holes on the far left and right on top of the head then you can use 2 friction bar style units, # 83660....
    view full answer...
    Image 1 for
  • How to Choose the Correct Weight Distribution Kit for a Starcraft TravelStar Hybrid Trailer
    The trailer GVWR (gross vehicle weight rating) and GTW (gross tongue weight) are the best indicators for selecting the proper weight distribution system for your setup. With GVWR of 4,400 lbs and GTW of 455 lbs, I would recommend the Reese Weight Distribution Kit with Shank, # RP65509. This setup allows for GTW up to 600 lbs and GVWR of up to 10,000 lbs so you will be adequately covered for weight capacity and safety. The 1200 lb GTW and 12,000 lb GVWR rating of the # 49570 weight distribution...
    view full answer...
  • Can Second Friction Sway Control be Used on Trailer Setup and Will It Help
    Adding a second friction sway control device # 83660 can help. Typically what we recommend is if the trailer is longer than 26 feet then a second unit should be used. You may need to use the weld-on friction sway control tab # C45822 or # 3442 if your weight distribution head doesn't already have the bracket and hole for a second one. It will get welded to the side of the head or ball mount. Welding should be performed by a qualified professional welder. Once welded on it will look like...
    view full answer...
  • Long Ball Mount Compatible with Towing with Tailgate Down
    The Hidden Hitch Ball Mount 15-3/4" Long # 80232 is rated for 6,000 lbs. This is the longest shank we have available and at the highest capacity. To have a weight distribution shank for your application is a great option. I recommend the Equal-i-zer Weight Dist Shank - 18" Long # EQ90-02-4500 along with hitch head # 58333 which will be rated for handling the same tongue weight whether the bars were installed or not. You will also need a compatible hitch ball like # A-90 for a 2 inch...
    view full answer...

< Previous

Do you have a question about this Accessories and Part?

  • Why

    At we guarantee:
  • Highest quality accessories and parts for the best price.

    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate accessories and part information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Wilson B
Updated by:
Wilson B
Employee Alexander C
Updated by:
Alexander C

At we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.

Product Experts Available Now!
Call 1-800-496-5010