High Lifter 6 Inch Portal Gear Lift 45% Dual Idler for Polaris RZR RS1 (2018–2022)

High Lifter 6 Inch Portal Gear Lift 45% Dual Idler for Polaris RZR RS1 (2018–2022)

Upgrade your single-seat machine with the High Lifter 6 Inch Portal Gear Lift 45% Dual Idler for Polaris RZR RS1. Designed specifically for the Polaris RZR RS1 platform, this heavy-duty RS1 portal gear reduction kit increases ground clearance, restores torque lost to oversized tires, and delivers long-term drivetrain protection.

The balanced 45% gear reduction is ideal for riders running 40 inch tires or larger, providing strong low-end power while maintaining better rideability compared to more aggressive ratios.

45% Gear Reduction with Dual Idler Strength

High Lifter enhanced the traditional portal box by integrating a second idler gear inside the gearbox. This 6 Inch Portal Gear Lift 45% Dual Idler for Polaris RZR RS1 spreads load across twice as many gear teeth, doubling the contact surface area and reducing stress by half.

The result is smoother torque transfer, increased reliability, and longer gear life under aggressive riding conditions.

The 45% gearing also improves engine braking performance, reducing brake wear and improving control in technical terrain.

Forged Aluminum Portal Gear Boxes

Unlike competitors that use cast or billet housings, High Lifter utilizes forged aluminum portal gear boxes. Forging creates a tougher, stronger housing capable of handling extreme mud riding and high-torque applications.

Advanced Sealing & Heavy-Duty Construction

• High-density Kevlar fiber gaskets resistant to oil and coolant
• No additional sealant required
• Dual oil seals on spindle shaft for increased sealing area
• True triple-sealed input shaft with protective wiper seal
• Massive 5/16″ steel backing plates with bent flanges
• Welded gusset brackets for superior structural strength
• 13” precision ground stainless steel slotted rotors

Precision Heat-Treated Gears

Alloy steel gears undergo a specialized heat-treatment process to increase internal and external strength. CNC precision machining ensures proper fitment, while controlled gear lapping provides smoother, quieter operation.

Vehicle Fitment

This Polaris RS1 6 inch 45% portal lift kit fits:

• 2018 Polaris RZR RS1 EPS
• 2019 Polaris RZR RS1 EPS
• 2020 Polaris RZR RS1 Premium
• 2021 Polaris RZR RS1 Premium
• 2022 Polaris RZR RS1

If you’re building a capable trail machine or aggressive mud setup, this High Lifter 6 Inch Portal Gear Lift 45% Dual Idler for Polaris RZR RS1 delivers the clearance, torque, and durability your RZR RS1 demands.

Cross-reference part/SKU numbers: PGL-645DI-RS1, 73-16585