FEATURES- Available with billet or cast aluminum housing
- Dual idler gear configuration maximizes strength
- Cool, quiet, precision ground gears made from 9310 alloy billet steel
- Increases width by 4 in. per side (8 in. total)
- 1.5 in. diameter 4340 hardened steel drive shaft
- Housings use advanced gaskets or O-rings that don’t let anything through
- Universal hub fits all major bolt patterns
- Gear reduction reduces stress on your drivetrain
- Dual idler gear configuration adds a 1” forward and rear offset
- Lighter than the competition
4” Portal Gear Lift Includes:
- (4) Assembled portal hub boxes complete with 9310 gears, seals, output shaft, gaskets, and thrust bearings.
- (4) Universal hubs and stainless steel slotted rotors with lugs
- (4) Specialized steel alloy backing plates
- (4) Steel caliper mounting plates
- (2) Steel steering arms
- Extended brake lines
- All required hardware, including recessed castle nut socket
- Frame stiffener (optional)
4” PORTAL GEAR LIFT
GDP Portal Gear Lift carries a Limited Lifetime warranty against manufacturing defects to the original purchaser, for the period and subject to the terms stated on our Warranty Policy page.
Max Tire Size Required Suspension Setup
26" (max tire size) - Stock (required setup)
27" (max tire size) 3" Lift Kit (required setup)
28" to 34" (max tire size) 2" Forward Offset A-Arms (required setup)
28" to 38" (max tire size) 6" Lift Kit (required setup)
- 14” or larger wheel required
- Wheels cannot exceed 5” backspacing
- Not compatible with dual beadlock wheels - Wheels need to have a center hole of at least 3.25" (82.55mm) or require a 1” wheel spacer