Polaris RZR Trail 900 8″ Portal Gear Lift

Gen 3 Portals Are Geared for All

Your Polaris RZR Trail 900 isnt your RZR until youve got a big lift and some massive mud grips on it. Weve got the perfect thing for youan 8 GDP Portal Gear Lift. Thats 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. Whats gonna stop you now?

GDPthe Most Trusted Name in Portals

Not sure if GDP is right for you? We think it is, but why dont 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 weve got experience that no one else has. When it comes to reliability, quality, and performance, nothings as trail-proven as GDP.

Perfect for Mud

It seems like we see more RZRs in the mud every time we go outits 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. Youll have room for bigger tires and all that torque means you can push through anything, if the muds 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 youre rolling on huge tires.

Learn more about how tire size and gear reduction can unleash your machines potential.

Unmatched Gear Material

Whats more important than gears in a portal gear lift? Nothing. Thats 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. Theyd 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.

• Our housings are reinforced in all the right places
• Theyre built with better oil flow and gearing forces in mind
• There are no gimmicks and no vents because vents do more harm than goodwe know because we tested them

The Strongest Portal Backing Plates You Can Get

How do we make the strongest backing plates on the planet? We start with an advanced steel alloy thats 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 youre backing plate doesnt hold up, youre done playing. So keep playing with GDP.

Advanced Gaskets and Seals

Whether you go with cast or billet, both housings use:

• Advanced 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 leaksnothings getting in or out, ever

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 GDPs 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 wont 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. Weve 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? Weve 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 youre 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.

Patent # 11,299,042

• 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 advanced gaskets that dont let anything through
• Universal hub fits all major bolt patterns
• Gear reduction reduces stress on your drivetrain

• Polaris RZR Trail 900 Sport : 2021+
• Polaris RZR Trail 900 Premium : 2021+
• Polaris RZR Trail 900 Ultimate : 2021+

Wheel Requirements:

• 22 or larger wheel required
• Wheels cannot exceed 5 backspacing
• Wheels need to have a center hole of at least 3.25″ (82.55mm) or require a 1 wheel spacer