Polaris RZR Trail 900 8" Portal Gear Lift

$3,899.95
Shipping calculated at checkout.
Do you need a frame stiffener?
Portal Housing Material
Portal Gear Reduction
Gen 3 Portals Are Geared for All
Your Polaris RZR Trail 900 isn't truly transformed until you've added a substantial lift and some large mud-ready tires. The ideal addition for achieving this? A powerful 8" GDP Portal Gear Lift, providing a significant lift along with your choice of a 45% or 60% gear reduction to enhance torque for managing those oversized tires. With GDP's solution, you can equip your RZR Trail 900 to conquer any challenging terrain with ease.

GDP - The Premier Portal System
Uncertain about choosing GDP for your UTV? With a vast community of riders relying on GDP portals each week, it's clear that GDP is the top choice. The extensive usage of GDP portals by numerous riders attests to the unmatched reliability, quality, and performance offered by GDP's portal system.

Optimal for Mud Adventures
Observing the increasing number of RZRs venturing into mud-filled terrains, it's evident that the RZR is a popular choice for mud enthusiasts. The incorporation of 8" portals paired with a 45% or 60% gear reduction transforms the RZR into the ultimate mud machine, equipped to handle larger tires and tremendous torque for navigating even the deepest mud-filled tracks.

Drivetrain Protection via Gear Reduction
By positioning the gear reduction within the hub, GDP effectively reduces stress on crucial drivetrain components such as axles, differential, prop shaft, and transmission, even under demanding conditions with oversized tires.

Learn more about how gear reduction can enhance your UTV's performance and tire compatibility.

Premium Gear Material
GDP prioritizes precision-ground 9310 alloy steel for their gears, ensuring seamless mating and offering smooth, quiet operation regardless of speed. The use of top-of-the-line gears guarantees luxury-grade performance from GDP portals.

Durable Portal Housings
Contrary to the notion of brute force being the key to sturdy housing, GDP employs a meticulous design approach backed by years of experience to craft robust portal boxes. Whether opting for cast or USA-made billet aluminum housings, you'll receive high-quality, precision-built hardware designed to withstand rigorous rides.
  • Housings feature strategic reinforcement
  • Designed to optimize oil flow and gearing forces
  • Avoiding gimmicks and vents to maintain structural integrity

Rugged Backing Plates
The securing of the title for the strongest backing plates is attributed to GDP's innovative approach. Beginning with an advanced steel alloy surpassing chromoly strength, the 5/16-inch thick backing plates are fortified with hand-welded gussets and pivot blocks, ensuring unparalleled strength and durability.

Advanced Gaskets and Seals
Both cast and billet housings utilize:
  • Premium gaskets with exceptional oil resistance and durability
  • A sealed input gear and double-lipped output seal
  • 100% sealing coverage to prevent leaks

Premium Bearings
Complementing the robust components of GDP portals are quality bearings, including a double-angular contact bearing on the output shaft. Designed to withstand impact, these bearings ensure reliable performance even under extreme conditions.

Universal Hubs and Enhanced Rotors
Featuring precision-ground stainless steel slotted rotors, GDP portals offer excellent braking efficiency. With multiple bolt patterns and lugs compatibility, including the innovative tapered output shaft, GDP provides a secure wheel attachment option for lasting stability.

Frame Stiffener Essential
Given the substantial lift provided by the 8" portals, it's imperative to install a frame stiffener to prevent chassis bending. Ensure optimal performance and longevity by incorporating a frame stiffener along with your GDP portals.

Exceptional Customer Support
Need assistance in selecting the ideal gear reduction for your UTV? Contact our specialized portal support team for personalized guidance in choosing the perfect set of portals.

Explore the benefits of gear reduction with our portal gear reduction calculator, offering insights into enhancing your UTV's performance and tire compatibility.

8" Portal Gear Lift Includes:
(4) Assembled portal hub boxes complete with 9310 gears, seals, output shaft, 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)


Patent # 11,299,042
Shipping & Returns

Ships with FREE Fedex 2-day shipping. Usually ships same or next business day

Do you need a frame stiffener?
Portal Housing Material
Portal Gear Reduction