74Weld - Portal Axle - Lexus GX470 (2003-2009)

Make your GX470 a trail weapon that still drives like a Lexus. The 74Weld Gen 2 Portal Axle Kit raises your axles—not just the body—delivering true underbody clearance, a 1.22:1 hub reduction (22%), and an approx. 3.88" lift from the axle centerline. Run 35–37" tires with far less driveline strain while keeping confident on-road manners, near-OEM CV angles, and precise steering feel.

Conventional lifts push suspension geometry out of spec. Portals lift the axles themselves, moving diffs, arms, and steering up and away from trail hazards—exactly why Ultra4 and trophy-truck teams trust 74Weld.

Why portals on a GX470

• Real ground clearance: Raising the axle centerline protects vulnerable components on rocks, ruts, and ledges.

• 22% torque multiplication at the hub: Offsets larger tire diameter, often avoiding a diff re-gear and easing drivetrain load.

• OEM-like road manners: Flatter control-arm and tie-rod angles at ride height help preserve the GX’s composed on-road behavior.

• Race-grade construction: Billet 7075 knuckles (steel inserts) and billet 6061 portal boxes—precision-machined for hard use.

• Brake upgrade + ABS: Larger front calipers/rotors and a rear caliper with integrated parking brake, with factory ABS compatibility.

• Stability built-in: +3.5" per side (≈ +7" overall) track width improves stance and scrub characteristics while retaining stock suspension components.

• Rear axle, perfected: Converts the GX’s rear semi-float to a full-float for superior load handling and durability.

Vehicle compatibility

• Lexus GX470 (2003–2009)

Sway bar note (non-KDSS platforms): Not compatible with the factory front sway bar location on non-KDSS configurations in this platform family. The sway bar must be removed or relocated (relocation recommended to maintain on-road manners). Ask us for GX-specific solutions.

What’s included

• Front & Rear Billet Aluminum Portal Assemblies

• Larger Front Calipers & Rotors

• Rear Caliper w/ Integrated Parking Brake

• 4340 Heat-Treated Rear Full-Float Axle Shafts

• All Required Hardware & Detailed Instructions

• Maxima Full Synthetic Oil

Key specifications

• Gear reduction: 1.22:1 (22% at the hub)

• Lift: ~3.88" (axle-centerline gain)

• Track width: +3.5" per side (≈ +7" overall)

• Construction: Billet 7075 knuckle (steel inserts); Billet 6061 portal box

• Rear axle: Converts semi-float to full-float; 4340 heat-treated shafts included

• Electronics: Factory ABS compatible

• Wheels/Tires: 17" minimum wheel diameter; 5"–6" recommended backspacing for optimal scrub

• Geometry: Optimized width/scrub while retaining stock suspension components

Wheel & tire guidance

• 35–37" tires are commonly achievable; final fitment depends on wheel specs, bumpers, alignment, and trimming.

• Verify caliper/rotor clearance and choose offset/backspacing that accounts for the +3.5" per side increase. We can spec a proven wheel/tire combo for the GX.

Why buy from Runnin4Tacos (R4T)

• Portal-experienced installers: We build and service portal-equipped Toyota/Lexus rigs—leave with a turn-key setup that works.

• Complete build planning: Wheels, tires, armor, gearing strategy, and alignment—we’ll blueprint the whole system.

• Talk to a human: Call 303-909-6047 to schedule professional installation or get fitment advice.

Shipping & local pickup

• Colorado local pick-up: A $369 transport fee applies to all local pick-up orders for 74Weld Portal Axles.

• Lead times vary—contact us for current availability and install scheduling.

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FAQs

Do I still need to re-gear?
Often no. The 22% hub reduction offsets the effective ratio change from larger tires, letting many owners run 35–37" without opening the diffs. Payload, terrain, and tire size ultimately decide.

How are portals different from a suspension lift?
Suspension lifts raise the chassis but keep axles at the same height, which can worsen CV/steering angles. Portals raise the axles, delivering real clearance under diffs/arms while preserving geometry.

Will ABS, traction control, and parking brake still work?
Yes—the kit is factory ABS compatible and includes a rear caliper with an integrated parking brake. Verify system operation post-install; initialization/recalibration may be recommended.