Polaris RZR XP 1000 4" Portal Gear Lift



Gen 3 Portals are Geared for All
Gen 3 portals let you ride the way you want. If you like to bury your Polaris RZR XP 1000 deep in mud with huge tires and huge torque, we’ve got a 30% gear reduction for that. If you like to ride flat out and throttle down through rough trails and nasty terrain, we’ve got a 15% gear reduction for that. GDP Portal Gear Lifts don’t put you in a box—they make what you’re already doing better.

GDP—the Most Trusted Name in Portals
How do we know they’ll make your ride better? Just ask any of the thousands of riders already using GDP portals out on the trail today. Altogether they have hundreds of thousands of ride hours that make GDP the most real-world proven portals on the market. More riders roll on GDP portals than any other portal system. So forge ahead with the best portal gear lift on the market.

Perfect for Mud
There’s a reason you’re always surrounded by GDP portals when you’re at the ride park—they’re perfect for mud and everybody knows it. A gear reduction and a 4” lift gives you room for huge tires and the torque to turn them. Torque, clearance, and big tires? Sounds like a recipe to dominate the mud and take home the bounty.

A Gear Reduction That Protects Your Drivetrain
With the gear reduction in the hub, it makes life easier for the entire drivetrain before it. Your axles maintain factory geometry and work less. Your axles, prop shaft, differential, and transmission are under less stress. That means longer lasting components, and a lift that doesn’t destroy your machine.

Learn more about how tire size and gear reduction can unleash your machine’s potential.

Unmatched Gear Materials
What’s the most important part of a portal gear lift? Gears of course. That’s why we didn’t cut any corners—they’re made with 9310 alloy steel. To put the cherry on top, they’re precision ground so they mate perfectly and give you quiet portals. They’re top-of-the-line gears that are built tough so you can ride full throttle.

Stronger Housings by Design
You can’t get stronger housings anywhere. How do we know? We’ve been making these things longer than anybody else—we know how to make them stronger. Whether you want cast or USA-made 6061 billet aluminum, you’ll get an awesome housing with unmatched strength and reliability. Plus that CNC-machined finish is sure to turn some heads.
  • Our housings are reinforced in all the right places
  • They’re built with better oil flow and gearing forces in mind
  • There are no gimmicks and no vents because vents do more harm than good—we know because we tested them
The Strongest Portal Backing Plates You Can Get
Our backing plates are made with an advanced steel alloy that’s designed for strength and durability. It’s stronger than chromoly and 5/16” thick. Combine that with a properly gusseted and welded design and you get backing plates that are strong enough to take on anything. We didn’t cut any corners on strength and neither should you.

Advanced Gaskets and Seals
Whether you go with cast or billet, both housings use:
  • Advanced Thermo-Tork® gaskets with excellent oil resistance and a lower deterioration rate than Kevlar gaskets
  • A sealed input gear and double-lipped output seal
  • 100% sealing coverage throughout so you can forget about oil leaks
Bearings That Rock
A portal box is only as strong as the bearings that keep everything moving. That’s why our output bearing is a double-angular contact bearing—it can withstand huge forces and huge torque from any angle without wearing prematurely or breaking. Our idler bearings are bulletproof roller bearings. Trust us—the idler does more work than you think. They’re bearings that are meant to be used and abused ride after ride.

Universal Hubs and Slotted Rotors
Our precision-ground, stainless steel slotted rotors stay cool to give you the braking power you need when you need it. They’re paired with universal hubs that make your life easier. They come with 4/156, 4/137, 4/115, and 4/110 bolt patterns and lugs—you can fit wheels built for just about any side-by-side in the world on these hubs. We invented the tapered output shaft that our hubs attach to. It provides a more secure lock that won’t wobble or wear over time.

Top-Rated Customer Service
Still need a little help getting exactly what you need? We’ve got a dedicated team just for portal support. Give us a call so we can get the perfect set of portals in your hands today.

4” Portal Gear Lift Includes:
(4) Assembled portal hub boxes complete with 9310 gears, seals, output shaft, Thermo-Tork® gaskets, and thrust bearings
(4) Universal hubs and precision-ground stainless steel slotted rotors with lugs
(4) Specialized steel alloy backing plates
(4) Steel caliper mounting plates
(2) Caliper adapter plates
(2) Steel steering arms
Extended brake lines
All required hardware, including recessed castle nut socket

Polaris RZR XP 1000 Portal Gear Reduction Recommendations
Max Tire Size Required Suspension Setup with 4" Portals Recommended 4" Portal Gear Reduction
29" to 33" Stock 15%
34" to 35" 1.5" Forward Offset A-Arms 15%
36" 3-5" Lift Kit 15%
37" to 39" 1.5" Forward Front A-Arms and 3-5" Lift Kit 15%
40" to 44" 7-10" Lift Kit 30%
Gear reductions listed are general guidelines to maintain factory top speed. Installing a larger than recommended gear reduction will result in extra torque and lower top speed. Give us a call for more information.


  • Polaris RZR XP 1000 : 2014+
  • Polaris RZR XP 4 1000 : 2014+
NOTE: Please check the bolt size of the hardware that fastens the Radius Arms to the brace plate (see image below). Select the socket size that corresponds to your OEM size. Polaris made a change in the mid-year in 2017 that has caused some confusion with fitment.


  • Available with billet or cast aluminum housing
  • Cool, quiet, precision ground gears made from 9310 alloy billet steel
  • 1.5 in. diameter 4340 hardened steel drive shaft
  • Housings use Thermo-Tork® gaskets that don’t let anything through
  • Universal hub fits all major bolt patterns
  • Gear reduction reduces stress on your drivetrain
Wheel Requirements:
  • 14" or larger wheel required
  • 14" & 15" wheels cannot exceed 4-1/2" backspacing
  • 16" and larger wheels cannot exceed 5" backspacing
  • If using factory 14" wheels, you must run 2" wheel spacers
  • Not compatible with dual beadlock wheels

GDP Portal Gear Lift Install | How To | Polaris RZR | SuperATV

SuperATV's GDP Portal Gear Lifts are a game changer in the utv/atv world. Did you just purchase a set or looking to purchase a set and wondering how to install some of SuperATV's GDP portal gears lifts? Let us show you how easy it is to get a set mounted up on a Polaris RZR. This general concept applies across the board for any make an model UTV or ATV. What is a Portal Gear Lift and what does it do? Our GDP Portals give you a gear reduction to give you your torque back after installing bigger tires. With 15%, 30%, and 45% gear reductions available, you can customize your portals to fit your riding style and tire size. The bigger the gear reduction, the bigger tire you can turn and the crazier the terrain you can roll over. Go with a smaller gear reduction to maintain a higher top speed and when you only need to turn tires that are a few inches bigger than stock. Go between if you want to do a bit of everything. For more information on GDP portals or any of our other great products give us a call at 855-743-3427 or check us out online at www.superatv.com. #SuperATV #GDPPortalGearLift #BuiltForBattle

Watch this Demo
Limited Lifetime Warranty

When filling gear box use only 80W-90 gear oil. Using grease will cause failure of gears and bearings. Using grease will void your warranty.

SuperATV takes pride keeping your GDP Portal Gear Lift in working order. That’s why we give you, the original purchaser, a lifetime of portal protection contingent on the following conditions. SuperATV warrants this product and its parts (excluding bearings, seals, & gaskets). Warranty is limited to material and / or workmanship defect at the time of shipment from the factory, and in no event shall seller have any liability for consequential damages of any kind resulting from a breach of this warranty. This warranty will be void on all products that show evidence of misapplication, improper installation, abuse, lack of proper maintenance, negligence, or alteration from original design. This warranty is in lieu of any other warranties, either expressed or implied, INCLUDING ANY IMPLIED WARRANTIES OF MERCHANTIBILTY OR FITNESS FOR ANY PARTICULAR PURPOSE.

Procedures for obtaining warranty service:

Should you have any problems with your Gear Driven Performance product, please call SuperATV Customer Service at 855-743-3427. Please have a copy of your original purchase receipt available, with dealer name (if applicable), date of purchase, and invoice number when calling for technical help. Most often, installation, or break in procedural issues (See break in procedure information, located in the instructions) can be handled quickly by speaking with one of our customer service representatives.

If it is determined that repairs are required to your Gear Driven Performance portal, you MUST acquire an RGA number from our customer service team. RGA's and repair services are ONLY rendered by SuperATV. Any shipping costs incurred after 30 days (starting from the original purchase date) on any Portal returned for repair is the customer's responsibility. ALL Portals must be returned in the original box, with the original packaging, or a similarly well protected box. ALL portals must have the RGA number clearly written on the outside of the package. NO COD packages will be accepted, and no package will be accepted without an RGA number written on the outside of the box. Shipping information, including address and method, will be given to you by our customer service team and/or listed on our website when you create your RGA.

Upon arrival of your warranty parts we will have them inspected by our technicians to determine if the damage was a manufacturing defect or rider/installation error. The inspection usually takes place 1-2 days after the package arrives. SuperATV will then call you with the results of the inspection. Depending on the outcome of the inspection, you may be required to pay a replacement fee for the broken parts (prices may vary depending on parts that need to be replaced). We do our best to get your issues corrected as soon as possible so you can get back out on the trails. We also match shipping labels for our customers. If you ship the warranty parts to us with an overnight label, we will return the favor and send you the replacements parts on an overnight shipment at no charge.

Replacement bearings, seals and gaskets can be found at www.SuperATV.com.

Thank you for your business!