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Off-roading isn’t a “one size fits all” thing. Your riding style is as unique as you are, and we designed our portals to reflect that. When you buy SuperATV’s GDP 4” Portal Gear Lift for your Polaris Sportsman XP, you have a say in what kind of housings we use (cast or billet aluminum) and the amount of gear reduction you get. Are you all about maximum power? Go with a 30% gear reduction. Is trail riding more your thing? Try our 15% gear reduction. Whatever your style, one thing stays the same—GDP portals will totally change the way you look at riding.
GDP—the Most Trusted Name in Portals
Don’t just take our word for it when we tell you GDP portals are the best in the business. Look at the thousands of riders across the country who put them to the test day after day! There’s a reason why more riders choose GDP portals over any other system—they’re long tested, trail proven, and highly trusted. Why would you buy portals from anyone else?
Perfect for Mud
Mud riding takes on a whole new meaning when you have GDP portals installed on your quad. You’ll be tearing through the thickest bogs and making it look easy! The torque boost gives you extra power to dominate in the mud, and the ground clearance keeps you from getting swamped. Sounds like a recipe for fun if we’ve ever heard one.
A Gear Reduction That Protects Your Drivetrain
Portal gear lifts place the gear reduction in your hub, which greatly reduces the amount of stress placed on your vehicle’s most critical components. This means you can relax and go hard knowing that your axles, differential, prop shaft, and transmission aren’t being abused. Your driveshaft will thank us.
Learn more about how tire size and gear reduction can unleash your machine’s potential.
Unmatched Gear Material
We use nothing but the best when it comes to GDP portals, and our gears are no exception. They’re made of a strong 9310 alloy steel and precision ground to ensure that the teeth match up perfectly with every revolution. Our gears deliver a smooth and quiet performance ride after ride.
Stronger Housings by Design
No portals in the world have housings stronger than what you’ll find on GDP portal gear lifts. We’ve put in years of research and testing to bring you housings that are strong enough to keep up with even the most rugged off-road lifestyle. So whether you go with cast or our USA-made 6061 billet aluminum with a sleek CNC-machined finish, just know you’re getting portal housings that truly are second to none.
- 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 extra-strong backing plates are just another reason why GDP portals are the best around. They’re made out of an advanced steel alloy, and trust us when we say this isn’t just any old metal. It’s specialized for ultra-high force applications and is even stronger than chromoly. And at 5/16” thick, you can bet these plates aren’t going to fail you anytime soon—or ever.
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
The performance of a portal gear lift depends on the quality of the bearings inside. That’s why we didn’t cut any corners when designing ours. We use roller bearings to hold our idler gear in place, because there’s no such thing as compromising when it comes to strength. And our output bearing is a double-angular contact bearing—that means it can handle huge loads in any direction without wearing down prematurely. With bearings this good, you know your GDP portals are built to last.
Universal Hubs and Slotted Rotors
Our precision-ground, stainless steel slotted rotors keep their cool no matter how wild you get. They’re designed to give you the braking power you need, as soon as you need it. We also include universal hubs, just to make things easier on you. With 4/156, 4/137, 4/115, and 4/110 bolt patterns and lugs, you’re free to run just about any size ATV wheel you can find. We also invented the tapered output shaft that our hubs attach to. It gives you 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) Steel steering arms | ||
| Extended brake lines | ||
| All required hardware, including recessed castle nut socket | ||
| Polaris Sportsman XP Portal Gear Reduction Recommendations | ||
|---|---|---|
| Max Tire Size | Required Suspension Setup with 4" Portals | Recommended 4" Portal Gear Reduction |
| Up to 28" | Stock | 15% |
| 29.5" | 2" Lift Kit | 15% |
| 30" to 38" | 6" Lift Kit | 15% | 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. |
- 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
- Weighs 194 lb. total, which is 50+ lb. lighter than the competition
- 14” or larger wheel required
- Wheels cannot exceed 5” backspacing
- Not compatible with dual beadlock wheels
- Polaris Sportsman 1000 Touring : 2015+
- Polaris Sportsman 550 : 2010-2014
- Polaris Sportsman 550 Touring EPS : 2010-2014
- Polaris Sportsman 850 : 2016+
- Polaris Sportsman 850 MV : 2012-2014
- Polaris Sportsman 850 SP : 2015+
- Polaris Sportsman 850 Touring : 2015+
- Polaris Sportsman 850 Touring EPS : 2010-2014
- Polaris Sportsman 850 Touring SP : 2015-2016
- Polaris Sportsman Forest 1000 : 2015
- Polaris Sportsman Forest 550 : 2011-2014
- Polaris Sportsman Forest 850 : 2011-2015
- Polaris Sportsman X2 550 : 2010-2014
- Polaris Sportsman X2 850 : 2011
- Polaris Sportsman XP 1000 High Lifter Edition : 2016+
- Polaris Sportsman XP 1000 XP : 2015+
- Polaris Sportsman XP 550 : 2009-2014
- Polaris Sportsman XP 850 : 2009+
- Polaris Sportsman XP 850 High Lifter Edition : 2016+
Free Shipping
At our company, we are proud to offer our valued customers free ground shipping on most orders over $100, a fantastic incentive to help you shop for your favorite items. Please note, this offer is applicable only to the lower 48 states within the United States. We strive to ensure that your products reach you in a timely and cost-effective manner. However, we would like to inform you that certain exclusions may apply due to the size, weight, or destination of the order. We kindly encourage you to review our shipping policies or reach out to our customer service team for any clarifications. We are committed to providing the best shopping experience possible, with quality service at every step of your journey with us.
Shipping
Shipping to US with verified payment & confirmed address. Domestic shipments are a mix of services from UPS, USPS, and FedEx. All packages may require a signature.
Delivery
Most of our products ship within 1 Business Day - Occasionally, we are out of stock on an item and will sometimes use a drop ship from one of our suppliers. Drop ships from a handful of suppliers can add up to 5 days processing time.
Refunds & Returns
PLEASE CALL US FIRST for an RMA (Return Merchandise Authorization) #.
All returns made to Revolution Off-Road, LLC must be in the original box with all parts included in new condition.
All returns must be sent with a copy of the original receipt, explanation of the problem and an RMA #.
All returns for must be received by Revolution Off-Road, LLC within 15 days of the product being received by the customer. (determined by UPS tracking #)
Customer is 100% responsible for ALL shipping costs on returned items. Thus, if you return an item and did not originally pay shipping costs, the original shipping cost incurred by us will be deducted from your refund.
Orders canceled by the customer will be subject to a 10% cancelation fee.
Any shipping costs paid by customer on original order, including ground shipping or expedited shipping will not be refunded including in the event of a return.
Credit will be issued after the product and its contents are inspected and found to be in brand new condition as shipped to the buyer.
All returns will be subject to a 20% - 30% restocking fee, depending on the manufacturer.
Shipments refused by you (the Customer) and returned back to Revolution Off-Road will carry an automatic 20% re-stocking fee deducted from the total credit owed.
Credit will not be issued in the following situations:
Product has been installed and or used. Product has been damaged from an attempt to install and/or use.
Product is shipped back without original box, manual and/or parts.
Seal on electrical parts is broken, or it is evident that electrical part has been installed to vehicle.
Product serial number does not match what was originally shipped to buyer.-Product is deemed not re-sellable due to customer's actions.
Electrical components after they have been installed.
Product Warranties
Revolution Off-Road, LLC honors all manufacturer warranties. Any product that carries a manufacturer warranty must be warrantied through its respective manufacturer. Installed components which have failed must be removed and shipped back to its manufacturer for inspection before replacement. Revolution Off-Road, LLC is not responsible for shipping products to manufacturers for inspection or the return shipping to the end user. Labor time is not paid by Revolution Off-Road, LLC.
Damaged Products
If a products arrived damaged you must contact Revolution Off-Road, LLC WITHIN 5 BUSINESS DAYS. Do not install the product as the manufacturer will handle shipping a replacement item. If you install the product then it will void any shipping claim as the product will need to be reviewed by sending pictures of any damage. Once again review your product before attempting to install it, if any damage is found, do not install.
Cores
There is a 30 day turnaround policy on cores from the time it was delivered.
