PullRite
25K ISR Adapter
Part #4439
OE ISR Adapter
$659
MSRP
25K lbs
Max Trailer Weight
6.3K lbs
Max Pin Weight
DIY or Pro?
Installation
Availability
Where to Buy
About This Product
The PullRite 4439 is a rail adapter for RAM 2500 and 3500 trucks with the factory OE puck system. It converts your RAM pucks to industry-standard rails so you can use any fifth wheel hitch with tabbed or spade-style mounting feet. Rated at 25,000 pounds with a 6,250-pound pin weight capacity.
The clever part is the four-piece modular design. Each section pins into the factory puck locations without tools. You can handle each piece individually instead of wrestling with one heavy unit. That makes it realistic for one person to install without calling a buddy for help.
This adapter positions your hitch centered over the rear axle. That is the sweet spot for weight distribution. Better balance means less truck sway and more stable handling when you are pulling a heavy fifth wheel down the highway.
PullRite makes this adapter in the USA with heavy-duty steel construction and a powder coat finish. It works with all PullRite ISR Series hitches including the Super 5th and SuperGlide models, plus compatible hitches from other brands. The kit includes all mounting hardware and carries a five-year warranty.
Compatibility
Fits These Trucks
RAM
| Model | Years | Bed Length | Bed Prep | |
|---|---|---|---|---|
| 2500 | 2013 - Present | Long Bed | Puck System | All options → |
| 2500 | 2013 - Present | Short Bed | Puck System | All options → |
| 3500 | 2013 - Present | Long Bed | Puck System | All options → |
| 3500 | 2013 - Present | Short Bed | Puck System | All options → |
Compare Options
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Got Questions?
Frequently Asked Questions
The 25K ISR Adapter is compatible with RAM trucks from 2013 to 2026. Use the fitment table above for the complete list of compatible year, model, and bed configurations.
The 25K ISR Adapter is rated for 25,000 lbs gross trailer weight (GTW) and 6,250 lbs vertical trailer weight (VTW — the pin weight your truck carries). Always verify your truck's tow rating before purchasing.
This hitch is considered DIY-friendly — most owners can install it with basic tools.
The 25K ISR Adapter is available from Amazon, PullRite directly. Use the "Where to Buy" buttons above for current pricing and availability.