Polaris RZR Pro XP 8 Inch Portal Gear Lift – 50% Dual Idler

Polaris RZR Pro XP 8 Inch Portal Gear Lift – 50% Dual Idler

The Polaris RZR Pro XP 8 Inch Portal Gear Lift with 50% Dual Idler gearing is engineered for riders who demand extreme clearance, massive torque multiplication, and uncompromising durability. Built for aggressive terrain and oversized tire builds, this portal system transforms your Polaris RZR Pro XP into a true off-road powerhouse.

With a 50% gear reduction, this setup delivers maximum torque to the ground while reducing drivetrain stress on axles, belts, and differentials. Whether you’re building a mud monster or tackling technical rock terrain, this 8 inch portal lift provides the mechanical advantage and strength required for serious performance.

Forged Gear Boxes – Maximum Structural Strength

• Forged aluminum gear boxes with tighter grain structure for superior strength.
• Eliminates porosity and internal weaknesses found in cast alternatives.
• Stronger than billet or cast aluminum designs.
• Built to handle extreme impact and aggressive riding conditions.

50% Dual Idler Gear Advantage

• Massive torque multiplication for extreme tire builds.
• Dual idler design spreads load across more gear teeth to reduce stress.
• Improved drivetrain reliability under heavy load.
• Enhanced engine braking performance.

Advanced Sealing & Protection

• High-density Kevlar fiber gaskets – oil and coolant resistant.
• Dual oil seals on the spindle shaft for expanded sealing surface.
• True triple-seal input shaft including protective wiper seal.
• Optional gearbox venting capability for improved cooling and seal longevity.

Heavy-Duty Structural Components

• 5/16” steel backing plates with bent flanges and welded gussets.
• Clocked backing plate design for maximum big tire clearance.
• 13” precision-ground stainless steel slotted rotors for superior braking performance.
• CNC precision-ground, heat-treated alloy steel gears.
• Controlled gear lapping for smoother and quieter operation.

Wheel & Tire Requirements

• Minimum 22” wheels required.
• 24” wheels recommended for optimal 8” portal performance.
• Maximum recommended tire size: 44”.

Vehicle Fitment (2020–2026 Models)

• Polaris RZR PRO XP Sport, Premium, Ultimate (2020–2026)
• Polaris RZR PRO XP 4 Sport, Premium, Ultimate (2020–2026)
• Rockford Fosgate Limited Editions

The Polaris RZR Pro XP 8 Inch Portal Gear Lift 50% Dual Idler version is built for riders who want maximum clearance, extreme torque, and professional-grade drivetrain durability for the most demanding builds.

Cross-reference part/SKU numbers: PGL-850DI-RZRPRO, 73-16402