- 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
- Increases width by 4 in. per side (8 in. total)
- 1.5 in. forward and rear offset
- 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
- 22” or larger wheel required
- Wheels cannot exceed 5” backspacing
Gen 3 Portals Are Geared for All
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 GetHow do we make the strongest backing plates on the planet? We start with an advanced steel alloy that’s even stronger pound-for-pound than chromoly. Then, we make it 5/16 inches thick, and, finally, we hand-weld gussets and pivot blocks to it. We went all out on strength because if you’re backing plate doesn’t hold up, you’re done playing. So keep playing with GDP.Advanced Gaskets and SealsWhether you go with cast or billet, both housings use:
Advanced Thermo-Tork® gaskets to keep oil in and water out. They have excellent oil resistance and a lower deterioration rate than Kevlar gaskets.
A sealed input gear and double-lipped output seal.
100% sealing coverage throughout. You can forget about oil leaks—nothing’s getting in or out, ever.
Your Polaris RZR Trail 900 isn’t your RZR until you’ve got a big lift and some massive mud grips on it. We’ve got the perfect thing for you—an 8” GDP Portal Gear Lift. That’s a huge lift, and you also get your choice of a 45% or 60% gear reduction to give you the boosted torque you need to turn your massive tires. With a little help from GDP, you can have the biggest portal lift and gear reduction at the bounty hole. What’s gonna stop you now?
GDP—the Most Trusted Name in Portals
Not sure if GDP is right for you? We think it is, but why don’t you ask one of the thousands of riders already using portals every week? More riders roll on GDP portals than any other portal system. That means we’ve got experience that no one else has. When it comes to reliability, quality, and performance, nothing’s as trail-proven as GDP.
Perfect for Mud
It seems like we see more RZRs in the mud every time we go out—it’s a great side-by-side for it. But with 8” portals combined with a 45% or 60% gear reduction, it becomes the ultimate mud UTV. You’ll have room for bigger tires and all that torque means you can push through anything, if the mud’s even deep enough to reach your skid plate.
A Gear Reduction That Protects Your Drivetrain
Portals put the gear reduction right in the hub. That matters because putting it after your drivetrain components will make them last longer. GDP reduces the stress on your axles, differential, prop shaft, and transmission even if you’re rolling on huge tires.
Learn more about how tire size and gear reduction can unleash your machine’s potential.
Unmatched Gear Material
What’s more important than gears in a portal gear lift? Nothing. That’s why our top-of-the-line gears are made from precision-ground 9310 alloy steel. They mate perfectly every time and give you smooth, quiet portals no matter how fast you go. GDP gives you luxury-grade performance.
Stronger Housings by Design
Some might think you can use brute force to make a better housing. They’d be wrong. We use precise design honed over years and backed by hundreds of thousands of ride hours to make the strongest portal boxes in the industry. So whether you want cast or USA-made billet aluminum for your housings, you know your getting high-quality, precision hardware that will stand up to any ride.
Bearings That Rock
All the strongest housings, gears, plates, and hardware would mean nothing if we had just average bearings. But, like everything else, we opted to make them as good as possible. With a double-angular contact bearing on the output shaft that can take hit after hit, you can rest easy knowing that even GDP’s bearings are built for battle.
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
These 8” portals are big, beefy, and powerful. In fact, they give you such a big lift that your RZR needs a frame stiffener to keep from bending its chassis. We’ve put it through its paces and bent plenty of frames. Trust us and 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.
If you’re not sure which gear reduction is right for you, check out our portal gear reduction calculator. Just plug in your original tire size, new tire size, and top speed to find out what a reduction can do for your ride.
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
(2) Steel caliper mounting plates
Extended brake lines
All required hardware, including recessed castle nut socket
Frame stiffener (must select at checkout)
- Polaris RZR Trail 900 Sport : 2021+
- Polaris RZR Trail 900 Premium : 2021+
- Polaris RZR Trail 900 Ultimate : 2021+
NOTE: Wheels need to have a center hole of at least 3.25" (82.55mm) or require a 1” wheel spacer.
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.
If you have product that is outside of warranty coverage or it is determined that product shows evidence of misapplication, improper installation, abuse, lack of proper maintenance, negligence, or alteration from original design. Customer will be notified and we will repair for a $250 fee.
Replacement bearings, seals and gaskets can be found at www.SuperATV.com.
Thank you for your business!