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For the best performance and the biggest lift on your Polaris Ranger XP 900, you need a set of 8” GDP Portals. They give you the ground clearance you need to fit big tires, and with your choice of a 45% or massive 60% gear reduction, you’ll have wicked torque that’ll rip through anything. If you want to turn your Ranger into the ultimate party wagon, get an 8” GDP Portal Gear Lift and get ready to have fun.
GDP—the Most Trusted Name in Portals
Next time you’re out at the ride park, take a look around at the suspension setups you see. You’re bound to see more than a few GDP Portals. That’s because more riders roll on GDP portals than any other portal system. Thousands ride on them every weekend, and with that much trail time, you know they’re real-world proven.
45% and 60% Gear Reductions Dominate Mud
Getting wild in the mud is all about going as big as you can. With 8” portals and a huge 45% or 60% gear reduction, you can go bigger than you thought possible. You have the ground clearance to keep from getting swamped and the gear reduction to turn monster mud grips through the bounty holes that swallow other riders whole.
A Gear Reduction That Protects Your Drivetrain
Portal gear lifts reduce the stress on your axles, differentials, prop shafts, and transmission. That’s because GDP puts the gear reduction in the hub instead of the transmission. Your machine’s drivetrain will last longer than running stock, and you can have more fun than anyone else.
Learn more about how tire size and gear reduction can unleash your machine’s potential.
Unmatched Gear Material
These aren’t amature gears, they’re top-of-the-line. We make them with precision-ground, 9310 alloy steel so they run quiet and they don’t quit. They’re designed for the extreme riding you love.
Stronger Housings by Design
You think you can find a better set of housings? Think again. We make our housings stronger by design. We have the technical design experience and the real-world beat-down experience to know what portal housings need to last. So whether you choose cast or USA-made billet aluminum, you’re getting a kick-ass housing with unmatched strength and reliability. We’ve got the riders on the trail to prove it.
- 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
We use an advanced steel alloy for our 5/16” steel backing plate to make them the strongest in the world. This isn’t your grandma’s steel—it’s stronger than chromoly and it’s designed for ultra-high force applications. These won’t break or bend over time.
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
- Rubber O-rings that completely seal the housings
- A sealed input gear and double-lipped output seal
- 100% sealing coverage throughout so you can forget about oil leaks
Our gears are only as strong as the bearings that hold them, that’s why we use a double-angular contact bearing. It’s designed to take huge hits from every direction without wearing prematurely. It’s the battle-tank of bearings. Built for battle components make GDP the best.
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 come with 4/156, 4/137, 4/115, and 4/110 bolt patterns and lugs so you can use wheels from just about any side-by-side. We invented the tapered output shaft that our hubs attach to, which provides a more secure lock that won’t wobble or wear over time.
Frame Stiffener Required
An 8” portal kit is a heavy-duty piece of hardware for heavy-duty machines, and as awesome as the Ranger XP 900 is, it’s not quite up to snuff. That’s why a frame stiffener is required. Trust us—we’ve hit enough bumps to know that bending a stock frame can happen. Don’t do it. Get a frame stiffener.
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.
| 8” 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 | ||
| Extended brake lines | ||
| All required hardware, including recessed castle nut socket | ||
| Frame stiffener (optional) | ||
| Polaris Ranger XP 900 Portal Gear Suspension Recommendations | |
|---|---|
| Max Tire Size | Required Suspension Setup with 8" Portals |
| 30" | Stock |
| 30" | 3" Lift Kit |
| 32" | 1.5" Forward Front A-Arms |
| 32" | 1.5" Forward Front A-Arms and 3" Lift Kit |
| 44" | 6" Lift Kit |
| Max tire sizes are measured at full compression and full turn. The given tire sizes are the largest we fit without rubbing. With minor trimming or a small amount of rub, larger tire sizes can be used. | |
- 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
- 1.5 in. forward and rear offset
- Housings use Thermo-Tork® gaskets and rubber O-rings that don’t let anything through
- Universal hub fits all major bolt patterns
- Gear reduction reduces stress on your drivetrain
- 22" or larger wheel required
- Wheels cannot exceed 5" backspacing
- Polaris Ranger XP 900 : 2013-2019
- Polaris Ranger XP 900 Crew : 2014-2019
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 full credit 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 6% 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% restocking fee, unless special considerations have been made.
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.
