#2100 ISR Series 20K Super 5th Fifth Wheel Hitch

A larger capacity version of the #1900, the #2100 ISR Super 5th fixed position, rail mounted fifth wheel hitch out-performs the generic, foreign-made industry standard type hitch on the market today.  The #2100 is ideal for long bed trucks, but usable with short bed trucks with the right truck/trailer combination for those who don't mind making a larger turning radius to avoid cab contact.

Built from thicker, high quality American steel and equipped with our heavier rated #3601 hitch plate, the #2100 ISR Series Super 5th tows a maximum trailer weight of 20,000 lbs.

All ISR Series hitches pin to any industry standard rail, eliminating the need to reinstall and drill additional holes!  Not sure what industry standard rails (ISR) are?  Click here to learn more.  If you don't have a rail system yet, then click that link and learn why our ISR rails are "above standard."

If you’re starting fresh and don’t have a towing system yet, we would encourage you to consider your options.  We have several mounting systems to choose from, so start here to see what's available to you.  And be sure to check out our mounting systems that feature Clean Bed Technology.

Do you have an OE Puck mounting system?  Did you know you can quickly convert this or any ISR Series hitch to a puck mounted one?  Find out how!

Have you considered a SuperGlide hitch for short bed trucks?  Click here to learn more.

To see why our hitch plate is different than all the rest, click here.



Do you own a horse, cargo, stock or gooseneck trailer and a fifth wheel trailer?  Tired of moving your hitch from a gooseneck to a fifth wheel when you want to go RVing? 

We have a solution for you!  The #4424 Horse Trailer Adapter lets you swap out your trailer's coupler with the #4424 adapter and quickly convert your gooseneck to a fifth wheel. 

Works with all ISR Series Super 5th and #3900 Single Point Super 5th.  Features a removable wedge for use with all SuperGlide automatically sliding hitches too!


  • 20,000 lb. max gross trailer weight towing capacity
  • 5,000 lb. max trailer pin weight capacity
  • Vertical height adjustment from 16" to 19"
  • Mounts to PullRite ISR Railsany other brand of industry standard type rails or PullRite SuperRails for a clean bed
  • Dual articulating head moves side-to-side and front-to-back during towing for a smoother ride
  • Hitch head easily removable with pins and clips...no tools needed
  • Locking jaw closes automatically around king pin
  • Latch handle locks automatically when locking jaws are engaged
  • No secondary locking devices to engage means no reaching over high-sided truck beds to get dirty
  • Extended handle keeps you out of the bed
  • Precision, laser cut jaw components cradle the trailer's king pin 140º for a secure, tight fit
  • Tight fitting parts give you the best ride possible
  • Hitch comes fully assembled
  • #4424 Gooseneck/Horse Trailer Adapter available
  • SAE J2638 tested
  • Made in the USA

NOTE:  Compatible with rotational king pin boxes, however, watch "The Downside to Rotational King Pin Boxes" under the "videos" tab to the right first.



A towing system includes each vehicle and component involved in towing. Each item in your towing system has a capacity or weight rating.  You trailer has a Gross Vehicle Weight Rating, or GVWR.  Your truck has a tow capacity, payload capacity, and possibly more. In addition, your fifth wheel hitch has a weight rating.  This weight rating must be at, or above, the GVWR of your trailer for you to tow safely.  In addition, if your truck can tow larger loads (has a larger capacity) than the rating of your hitch, your system is only safe to tow loads at the lower rating, that of the hitch.

Your mounting kit also has a weight rating, just like your fifth wheel hitch. Many times, these rating are designed to match. But, this is not always the case. Your mounting kit may be higher rated then your fifth wheel hitch, but it also could be lower depending on the components involved.  The lowest rating of any one component in the system becomes the rating of the entire system. If your mounting kit is rated to 18,000 lbs., and your hitch is rated at 24,000 lbs., the weight rating of the entire system will not be above 18,000 lbs.  Other components in the system could lower the actual system rating further.

It is the end users responsibility to ensure a safe towing experience. To this end, it is your responsibility to ensure that the truck, trailer, hitching components, and all other items involved are rated or have a capacity sufficient for the loads involved.

Part No
Capacity (max. trailer weight)
20,000 lbs.
Pin Weight Capacity (max. vertical weight)
5,000 lbs.
Hitch Plate Weight
40 lbs.
Total Weight
151 lbs.
Overall Dimensions (inches)
28.25"W x 24.25"L x 17"H
Black, powder coat
5 year, limited
Shipping Specs
Box, Corrugated
Clean Bed Technology
PullRite's Exclusive, Fully Automatically Locking Hitch Plate
Downside of Hooking Up with Conventional Goosenecks