Can-Am Defender 8 Inch Portal Gear Lift – 50% Dual Idler

Can-Am Defender 8 Inch Portal Gear Lift – 50% Dual Idler

The Can-Am Defender 8 Inch Portal Gear Lift with 50% Dual Idler gearing is engineered for riders who demand extreme ground clearance, maximum torque multiplication, and professional-grade durability. Built specifically for Can-Am Defender HD models, this 8” portal system transforms your machine into a big-tire, high-performance work and mud platform.

The 50% gear reduction delivers massive torque to the ground while reducing stress on belts, axles, and differentials. Whether you’re hauling heavy loads, building a mud-ready rig, or pushing your Defender through aggressive terrain, this system provides the mechanical advantage 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 and cast aluminum competitors.
• Built to handle extreme impact and heavy-duty use.

50% Dual Idler Torque Advantage

• Massive torque multiplication for oversized tire builds.
• Dual idler gear design spreads load across more gear teeth to reduce stress.
• Improves drivetrain durability under heavy load conditions.
• Enhances engine braking and downhill control.

Advanced Sealing & Cooling Protection

• High-density Kevlar fiber gaskets – oil and coolant resistant.
• Dual oil seals on the spindle shaft for increased sealing surface.
• True triple-seal input shaft including protective wiper seal.
• Optional gearbox venting capability to reduce heat and extend seal life.

Heavy-Duty Structural & Brake 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 improved 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.
• Ideal for extreme tire builds up to 44”.

Vehicle Fitment (2016–2021 Models)

Fits Can-Am Defender HD5, HD8, HD9, HD10, MAX, PRO, Limited, Lone Star, X MR, XT, DPS, CAB, and special editions from 2016 through 2021.

The Can-Am Defender 8 Inch Portal Gear Lift – 50% Dual Idler version is built for riders and work crews who want maximum clearance, extreme torque, and long-term drivetrain durability for demanding off-road and heavy-duty applications.

Cross-reference part/SKU numbers: PGL-850DI-C1D, 73-15973