SuperATV Polaris ATV 4" Portal Gear Lift
1008-0558 (MFG #: PGH-1-21-151)
$4,083.95
Sale price
$4,083.95
Regular price
$4,287.99
Sale
-4%
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SuperATV Polaris ATV 4" Portal Gear Lift for Polaris Sportsman 850 ATV
SuperATV Polaris ATV 4" Portal Gear Lift for Polaris Sportsman 850 ATV
$4,083.95
Sale price
$4,083.95
Regular price
$4,287.99
Sale
-4%
SKU:1008-0558
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Description
Portals Are Geared for All
Portals are geared for all, and that means we’re not putting anyone in a box. Choose a 15% or a 30% gear reduction to match your ride style. Love going big and going deep? Get 30% gear reduction for maximum torque and bigger tires. Prefer trail riding? Get a 15% gear reduction. Need ultimate strength? Opt for our dual idler configuration. The choice is yours. Ride your way wherever you want. Let GDP take you where no one else can go.
What is a Dual Idler®?
Perfection takes time. After years of research and development, we’ve made our dual idler gear portals unlike any other. By placing a second idler gear in the portal box, the load gets spread over twice as much surface area for more reliable torque transfer and the strongest gear set you can get. Two idler gears don’t do a thing if they’re not mated perfectly, though. Precision CNC grinding ensures ours do. Our gears are made from the industry’s toughest 9310 steel alloy. Didn’t think dual idlers mattered? With GDP’s quality and experience, they finally do.
Perfect for All Kinds of Rides
Love mud? The deeper you go, the more you’ll realize how much torque a 30% portal gear reduction really gives you. Plus that extra ground clearance will keep you from getting swamped. Portals plus mud just makes sense. For trails, desert, and dunes, check out our 15% gear reduction that maintains a higher top speed while still giving you punchy torque.
A Gear Reduction That Protects Your Drivetrain
Portals have their gear reduction right in the hub. That makes this gear reduction reduce the stress on your axles, differential, Prop shaft, and transmission. You can ride harder than stock and cause less wear. It’s a win-win, and a recipe for fun.
Stronger Housings by Design
You think you can find better housings that GDP housings? Think again. Our housings are stronger by design. We know what makes a housing break and why. That’s why whether you choose cast or USA-made 6061 billet aluminum with a dead sexy CNC-machined finish, you’re getting a kick-ass housing with unmatched strength and reliability. Plus, they’re supported by our unstoppable backing plates made with an advanced steel alloy.
Advanced Gaskets, Seals, and Bearings
Our portals use:
Complete the Package with a Frame Stiffener
Portals and monster tires are fun, but they can place additional stress on your machine’s frame. To make your suspension bulletproof, don’t forget to add a SuperATV Frame Stiffener when you check out!
Portals are geared for all, and that means we’re not putting anyone in a box. Choose a 15% or a 30% gear reduction to match your ride style. Love going big and going deep? Get 30% gear reduction for maximum torque and bigger tires. Prefer trail riding? Get a 15% gear reduction. Need ultimate strength? Opt for our dual idler configuration. The choice is yours. Ride your way wherever you want. Let GDP take you where no one else can go.
What is a Dual Idler®?
Perfection takes time. After years of research and development, we’ve made our dual idler gear portals unlike any other. By placing a second idler gear in the portal box, the load gets spread over twice as much surface area for more reliable torque transfer and the strongest gear set you can get. Two idler gears don’t do a thing if they’re not mated perfectly, though. Precision CNC grinding ensures ours do. Our gears are made from the industry’s toughest 9310 steel alloy. Didn’t think dual idlers mattered? With GDP’s quality and experience, they finally do.
Perfect for All Kinds of Rides
Love mud? The deeper you go, the more you’ll realize how much torque a 30% portal gear reduction really gives you. Plus that extra ground clearance will keep you from getting swamped. Portals plus mud just makes sense. For trails, desert, and dunes, check out our 15% gear reduction that maintains a higher top speed while still giving you punchy torque.
A Gear Reduction That Protects Your Drivetrain
Portals have their gear reduction right in the hub. That makes this gear reduction reduce the stress on your axles, differential, Prop shaft, and transmission. You can ride harder than stock and cause less wear. It’s a win-win, and a recipe for fun.
Stronger Housings by Design
You think you can find better housings that GDP housings? Think again. Our housings are stronger by design. We know what makes a housing break and why. That’s why whether you choose cast or USA-made 6061 billet aluminum with a dead sexy CNC-machined finish, you’re getting a kick-ass housing with unmatched strength and reliability. Plus, they’re supported by our unstoppable backing plates made with an advanced steel alloy.
- Our housings are reinforced for gear retention and optimized for oil flow
- Advanced steel alloy backing plates are stronger than chromoly
- Enhance with Portal Blood—gear oil formulated for GDP Portals
- There are no gimmicks and no vents because vents do more harm than good—we know because we tested them
Advanced Gaskets, Seals, and Bearings
Our portals use:
- Advanced gaskets and O-rings with excellent oil resistance and low deterioration rates
- A sealed input gear and double-lipped output seal
- 100% sealing coverage throughout so you can forget about oil leaks
- Double-angular contact output bearings to prevent premature wear
- Roller idler and drive bearings to maintain perfect gear meshing
Complete the Package with a Frame Stiffener
Portals and monster tires are fun, but they can place additional stress on your machine’s frame. To make your suspension bulletproof, don’t forget to add a SuperATV Frame Stiffener when you check out!
To avoid any fitment issues, please make sure to select the exact year, make and model of your vehicle. If you are unsure, please reach out to us at 1-800-265-2970 for assistance prior to purchasing.
Note that this part is built-to-order and NON-RETURNABLE. This part must be installed by a licensed professional to avoid any issues related to the complex installation.
Technical Specifications
- MFG. Part Number PGH-1-21-151
Vehicle Information
Polaris Sportsman 850 ATV (2009-2026)
The Polaris Sportsman 850, produced from 2009 to 2026, is a utility-sport ATV renowned for its power and versatility. Designed to tackle the most demanding terrains, it offers a combination of robust performance and comfort. Over the years, the Sportsman 850 has received continuous updates to enhance its handling, suspension, and hauling capabilities, solidifying its reputation as a reliable vehicle for both work and recreation. It is powered by a potent engine, ideal for towing, carrying loads, and off-road adventures. The available information does not indicate a major platform generation break for the 2009-2026 period, but rather progressive enhancements and the introduction of various trims and editions. FAQ:
Q: How can I be sure this part fits my Polaris Sportsman 850?
A: To ensure compatibility, please use the year and model selector at the top of this page to find parts specific to your vehicle.
Maintenance
| Component | Interval | Details |
| Engine Oil and Oil Filter | Break-in: 25 h or 400 km. Regular: 200 h, 6 months, or 3,200 km. | Change filter with every oil change. |
| Air Filter | Inspect before every ride or weekly. Replacement: 50 h or more frequently. | Replace if dirty after cleaning, damaged, or torn. Inspect every 25-50 h. |
| Drive Belt | Inspect and adjust as needed. Replacement: 1,600 to 3,200 km (based on wear). | Replace if slipping, jerky acceleration, visible cracks, or glazed spots. |
| Spark Plug | Replacement: 200 h, 24 months, or 3,200 km. | Periodic inspection recommended. |
| Coolant | Drain and replace: every 5 years. | Check level daily or before every ride. Inspect strength and leaks annually. |
Maintenance intervals are based on various sources and may vary. Always consult your vehicle's owner's manual for precise information. Severe use (mud, water, heavy loads, extreme temperatures) may require more frequent servicing (up to 50% of stated intervals).