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Ironman 4x4

Ironman 4x4 3" IM2.5 Suspension Lift Kit for Lexus GX470 (2003-2009) Non-KDSS

Ironman 4x4 3" IM2.5 Suspension Lift Kit for Lexus GX470 (2003-2009) Non-KDSS

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Regular price $1,982.00
Regular price B2B price $1,982.00
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Important: Always read the entire product description, including Features, Important Notes, Specifications, and Fitment data, before making a purchase. Components contained in images and descriptions may change based upon your selections.

Premium 2.5-Inch Monotube Suspension, Refined Comfort, Responsive Control, Real-World Capability

IM2.5 is IRONMAN 4X4’s premium monotube suspension system, engineered for drivers who want improved ride comfort, handling stability, and off-road control without sacrificing daily drivability.

Built around a large 2.5-inch monotube design, high-pressure nitrogen charge, and vehicle-specific tuning, IM2.5 delivers a more responsive and composed driving experience across highways, rough roads, and technical terrain alike.

This is a performance suspension designed for real-world use, not just spec sheets.

  • 2.5-inch monotube performance suspension
  • Improved ride comfort & handling stability
  • Vehicle-specific tuning for balanced performance
  • Designed for on-road refinement & off-road control
  • 4-year warranty

WHERE IM2.5 FITS

Not all suspension systems are designed for the same purpose:

Lift & Level - Improved stance and tire clearance. Maintains near-factory ride feel. Budget-friendly upgrade

Nitro-Gas - OEM+ strength and control. Daily driving and light off-road use.

Foam Cell Pro - Durability-first suspension system. Optimized for heavy loads, towing, and long-distance travel. Consistent performance under sustained heat and weight

IM2.5 Monotube - You are here

  • Premium monotube ride quality and control
  • More responsive handling and damping feel
  • Comfortable daily driving with confident off-road capability
  • Refined performance across mixed terrain and varying speeds

IM2.5 is designed for drivers who want a more composed, responsive, and confidence-inspiring suspension experience both on and off-road.

Features

  • 2.5" Monotube Aircraft-Grade Aluminum Construction: The 2.5" extruded monotube body is made from 6061-T6 aircraft-grade aluminum for up to 4x better heat dissipation &
  • 30% lighter than steel for enhanced durability and cooling efficiency.
  • Large 57mm Billet Aluminum Piston: The CNC-machined billet aluminum piston offers 60% more surface area than traditional designs enabling precise valve tuning for exceptional ride comfort and control.
  • Premium Build Materials: High-pressure (200PSI) nitrogen gas NOK seals and Fuchs hydraulic oil contribute to long-lasting durability and high-performance under extreme conditions.
  • Velocity-Sensitive Design: The monotube damper adjusts seamlessly to changing terrain providing a plush smooth ride on highways and responsiveness on rugged trails.
  • Type 2 Anodized Corrosion Resistant Finish: Military grade anodized corrosion resistant finish withstands harsh weather mud and road grime for extended durability and reliability.
  • Double-Bonded Natural Rubber Bushings: Built with double-bonded natural rubber bushings for superior durability and resistance to weather and environmental elements offering hassle-free performance and reliability.
  • Adjustable Coilover System: Equipped with an Acme-threaded body the IM2.5 allows for infinite tuning of the ride height to suit different loads and driving scenarios.
  • Covered for the Unexpected: Backed by IRONMAN 4X4's 4-year unlimited-mileage warranty unlikely to be needed thanks to the IM2.5's legendary durability but there just in case the unexpected finds you.
  • Unmatched Durability and Longevity: The IM2.5 Monotube Suspension is engineered for unmatched durability and longevity. Though fully rebuildable it's built to perform flawlessly without maintenance.