IM2.5 MONOTUBE SUSPENSION
NOW AVAILABLE FOR:
Toyota Hilux Revo, Prado 250, Land Cruiser 76/78/79/200/300, Ford Ranger Next Gen, VW Amarok 2023+, Isuzu D-Max, Mazda BT 50 TF, and BYD Shark 6.
Shop with Confidence
IM2.5 MONOTUBE SUSPENSION. Confidence you can feel, control you can trust.
The IRONMAN 4X4 IM2.5 is the ultimate suspension upgrade. Premium 2.5" aluminium monotube suspension and control arms engineered for smoother control, consistent performance, and long-distance durability on road and off.
SMOOTH, NOT SOFT.
- Smoother on tar, more composed on gravel, sharper through corners
- Improved ride quality and composure over corrugations, uneven surfaces and changing terrain.
- Tuned for superior on-and-off-road performance
- Aircraft-grade 606-T6 aluminium construction throughout
LIGHTER. COOLER. STRONGER.
- 30% weight reduction over twin-tube steel shocks
- Runs harder, longer! Better cooling prevents fade under sustained use
- Up to 4mm wall thickness with ultra-thick Type 2 anodising
- Built for daily commutes, touring, towing and overland adventures
ENGINEERED FOR RELIABLE PERFORMANCE.
- Massive 2.5" piston = 60% larger surface area than the Foam Cell Pro
- Upper control arms included as standard
- Correct geometry and precise handling from day one. Nothing to add later
- The IM2.5 is the only complete suspension system. Not just a suspension kit; a full performance upgrade.
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IM2.5 SUSPENSION EXPLAINER
IM2.5 Technical Information for those who want to go deeper.
ALUMINIUM CONSTRUCTION
IM2.5 is made from aircraft-grade 6061-T6 aluminium, which is 30% lighter than traditional steel shocks. This reduces unsprung weight, improves responsiveness and helps your suspension react faster to changing terrain.
Aluminium also dissipates heat four times more efficiently than steel, keeping shocks cooler under sustained loads and maintaining performance over long distances.
MONOTUBE DESIGN
Unlike twin-tube shocks, IM2.5 uses a monotube configuration with an Internal Floating Piston (IFP). This separates 200 PSI nitrogen gas from the hydraulic oil, preventing aeration and ensuring consistent damping — even under repeated hard use.
The monotube layout also allows inverted mounting, keeping the shock body high and protected from rocks and debris.
CNC-Ported Piston & PTFE-Teflon Band
The IM2.5 piston is CNC-ported billet aluminium with a PTFE-Teflon band and O-ring sealing. This precise engineering allows oil to flow smoothly, softening minor bumps while maintaining firm control on larger impacts.
The result is refined ride quality without compromising handling.
HEAVY DUTY SEALS & RODS
Class-leading NOK seals on the IFP separate gas and oil reliably, preventing leaks or foaming.
The 20mm hardened steel piston rod, combined with a robust dirt shield, ensures durability where shocks experience the most stress — maintaining smooth operation mile after mile.
Every component — from the billet piston to the monotube body — is designed to work together.
WALL THICKNESS & PROTECTION
IM2.5 shock bodies feature 3–4mm wall thickness and are finished with ultra-thick Type II anodising.
This combination provides superior corrosion resistance, abrasion protection, and strength, even under harsh off-road conditions.
TUNED FOR REAL WORLD DRIVING
IM2.5 is precision-tuned to provide controlled comfort and fade-free performance, whether cruising highways, tackling corrugations, or crawling over rocky trails.
It’s suspension engineered for the long haul, with both comfort and capability in mind.
UPPER CONTROL ARMS — INCLUDED AS STANDARD
Most suspension upgrades improve the shocks and leave your geometry unchanged. The IM2.5 doesn't. Upper Control Arms are included as standard, correcting suspension geometry to work in harmony with the new ride height and shock performance from day one.
Without UCAs, even the best shocks can't perform to their full potential. Incorrect geometry leads to uneven tyre wear, compromised handling and unpredictable behaviour under load. With the IM2.5, everything works together as it should. Correct geometry. Precise handling. Nothing to source separately, nothing to add later.
This is what makes the IM2.5 the only complete suspension system — not just a component upgrade, but a full performance solution engineered to work as one.
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