Cargo Rack / Dog Seat

"Since a stick came through my floorboard during a casual ride on a backcountry road, I refuse to drive my SxS without a skid plate. There is no reason to risk my vehicle or my family." - Gregg (UTV owner since 2005)

BUY ONCE, CRY ONCE. Replace any part and pay factory pricing for replacements if you break or wear it out
MADE IN UTAH: Sourced, Designed, and Manufactured in the USA
WORKMANSHIP GUARANTEE. We will replace any workmanship issue at no cost to you

Model: Ultimate - Pro XP 4


Material: HDPE




Sale price$119.00

Cargo Rack / Dog Seat - Back Seat Conversion Kit | Polaris RZR Pro XP 4

Best UTV Cargo Rack / Dog Seat Features for Polaris RZR Pro XP 4


  • Access to foot opening for extra storage
  • Easy and fast install and uninstall
  • Easily tie down your cargo with D loops (purchase separately) - you can install loops anywhere on the platform

Includes (per side)

  • Base Kit for Seat Conversion  (installs in seconds)
    • NOTE: Ultimate - Pro R 4: Cargo rack base is not included, model features flip down seat. Installs on top of folded seats for a flat surface
  • Cargo Rack Platform
  • Hardware



How to choose between HDPE and UHMW 
For most consumers, HDPE provides the best features for the price along with the most attractive material finish. 

Our HDPE has a matte black finish and our UHMW has a shinny finish.

UHMW can be up to 10x the molecular strand length as HDPE. This enables UHMW to be even more durable and abrasion resistant than HDPE. However, the unique manufacturing process that is needed to achieve UHMW’s performance leads to a higher material price and a less consistent color/texture.



Full Name

High Density Polyethylene

ULTRA High Molecular Weight Polyethylene

Our recommendation

Not sold or recommended for most offroad applications

Best for heavy use offroad riders




Impact Strength


Best/No Break

Friction Rating


Extremely Slippery

Abrasion Resistance




Excellent, no variations in color or texture

Good, slight variations in color and texture, black

Best Use

-  Low use
-  Great material appearance


-  High use
-  Best performance
-  Less focused on appearance of material


Extremely common plastic that is easy to form into consumer items

Extremely durable, wear resistant, self lubricating industrial plastic 



What our friends say

Timeline (Jump to)

1:00 - Intro to the cargo rack
1:38 - Assembling the kit
3:11 - Installing into the machine - seconds to install
4:01 - Difference between competitors / Seat Base 
4:45 - Difference between UHMW and HMW
5:10 - Strength Test
6:30 - Dog test


Compatibility Notes

If you have custom seats, you can adjust the edges by cutting the plastic with a jigsaw or circular saw. Cutting instructions come with your purchase.

Still have questions? Request Model Verification  by our staff or Contact Us!




Our customer support is available Monday to Friday: 9am-5pm MT.Average answer time: Text <5 min | Email or Phone within 1-4 hrs

Buy from the industry leader

Skid Plates Are our Specialty

Founded in 2014

First UHMW skid made in 2009!


Nearly every side-by-side

Made in Utah

Sourced, Designed, Tested, and Manufactured in the US

Difference Maker

We only produce products that make meaningful differences

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