SuperATV Polaris RZR/General 4" Portal Gear Lift
1008-2391 (MFG #: PGHD-1-44-301-B-FS)
$6,918.90
Sale price
$6,918.90
Regular price
$7,264.99
Sale
-4%
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SuperATV Polaris RZR/General 4" Portal Gear Lift for Polaris RZR S4 900 Side-by-Side
SuperATV Polaris RZR/General 4" Portal Gear Lift for Polaris RZR S4 900 Side-by-Side
$6,918.90
Sale price
$6,918.90
Regular price
$7,264.99
Sale
-4%
SKU:1008-2391
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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 PGHD-1-44-301-B-FS
Vehicle Information
Polaris RZR S4 900 Side-by-Side (2018)
The 2018 Polaris RZR S4 900 is a robust four-seat recreational side-by-side, powered by an 875cc engine delivering 75 horsepower. For its 2018 model year, this vehicle was primarily available as a single model, commonly equipped with Electric Power Steering (EPS). Aesthetic variations included color options such as Black Pearl and Ghost Gray, which did not signify mechanical differences. The 2018 RZR S4 900 was largely a carryover from the previous year, with no significant mid-cycle generation or engine changes reported. While Polaris introduced other new models in its broader RZR lineup that year, the RZR S4 900 continued without major updates, maintaining its established platform. FAQ:
Q: How can I ensure this part fits my Polaris RZR S4 900?
A: Please use the year and model selector on this page to confirm the exact fitment for your specific vehicle.
Maintenance
| Component | Interval | Details |
| Engine Oil and Filter | Initial: 25 hours or 1 month. Regular: 50 hours, 1 600 km, or 1 year (whichever comes first) | Always change the filter when changing the oil. Vehicles subjected to severe use require servicing at 50% of the stated interval. |
| Drive Belt | 50 hours, 1 600 km, or 1 year (whichever comes first) | Inspect and replace as needed. It is recommended to inspect the drive belt every couple of months for wear. |
| Spark Plug | 50 hours, 1 600 km, or 1 year (whichever comes first) | Inspect and replace as needed. |
| Engine Air Filter | Initial: Inspect and clean. Regular: 50 hours, 1 600 km, or 1 year (whichever comes first) | Inspect and replace as necessary. Ensure proper installation of the filter and airbox cover, and inspect ducts. |
| Coolant (Cooling System Fluid) | 50 hours, 1 600 km, or 1 year (whichever comes first) | Inspect fluid level and for leaks. Inspect coolant strength seasonally and pressure test the system yearly. |