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American Made ADHD Rebuild kit for the OEM Montero Idler Arm assembly.

This Chromoly Kingpin and Brass Bushing kit replaces worn or damaged bushings and kingpin & comes with new seal.

These kits have been strong enough for the biggest tires and toughest trails in America, Monteros on these kits have navigated the Rubicon and made it home in one piece. This kit is not indestructible, side loading a single sheer arm is the easiest way to bend it and if you're on 37's, aggressively wheeling boulder fields, you will manage to damage this otherwise bulletproof idler kit. Properly installed and properly used, this could be the last idler you ever buy for the truck. Or it could be the insurance you need to go harder than you would otherwise. This kit adds strength, but it's not indestructible. 


1992-2000 Montero (generation 2 and 2.5)

Or any generation 1 Montero/Raider that has been upgraded to Gen 2 steering (it's common upgrade to install the steering box and idler assembly from a gen 2 on a gen 1 to gain more steering leverage and larger components.

The Basic Info:

If you run 33 inch or larger tires and you plan to go off-road, read below:

The idler arm works to support the pitman arm in the steering system. While your steering box and pitman arm do all of the actual hydraulic to mechanical work; moving the front wheels from left to right, the tie rod ends and drag link carry the force applied from the steering box. The idler arm’s job is to be a passive participant in the steering system, it’s there to support the pitman arm’s movements. The more support it provides, the firmer and more precise the steering is. The bushings the Kingpin shaft ride on are plastic from the factory. Other brands of 4×4’s use a similar style of steering and have been successfully using bronze bushings for decades, the Montero finally catches up.

The problem(s):

-Factory Idler arms are made of cold drawn, normalized steel, fine for getting your spouse and kids to soccer practice, but not so fine to get your 35″ tire equipped rig through a boulder field then back home without chewing up tires and ruining your steering geometry. A mere 10 millimeters of deflection in the idler arm can completely throw the steering geometry out of alignment, A bent idler arm will result in a “toe-in” or “toe-out” condition making the trip home unbearable, if possible at all.

- The idler arm is mounted outboard of the frame in front of the axle center line, this means that road dirt, salt, water and debris will come into contact with it every day.  The factory bushings for the idler arms are made of plastic and break down.

-Worn idler arm bushings result in steering slop and wander, premature tire wear, outer or inner cupping on the tires and most importantly, an unsafe vehicle to operate at 75+ MPH.  A worn system will cause the front of the vehicle to follow the cracks in the road, making things unpredictable and requiring extra effort on behalf of the driver. If the rear is following cracks, see our upgraded panhard bars. here and here

The solution:

The new shaft is made of Chromoly Steel and comes with oil impregnated bronze-nickel bushings.  This kit will take a beating on the trail and cut down your maintenance effort. Many users report replacing their ball joints and tie rods 3-4 times in normal maintenance cycles with this part requiring no attention. 

The Chromoly shaft is superior in strength to the factory unit in terms of durability and tensile strength, but what really seals the deal on our idler kit is the factory size replacement bushings. The new bushings are made of oil impregnated bronze alloy and they’re made to last. So even if you’re only running 31’s you'll find benefit in precise steering. 


This kit rebuilds the FACTORY idler housing - You must have a Mitsubishi factory housing - At current time no aftermarket idler arm housings are known to work. You'll be re-using the housing, tension spring, clips, washers and arm with ball joint (can be replaced with a 555, pro-forged, or moog arm. However, purchase at your own risk, we're not responsible for their product variations, if any exist)

Kit Contains:

Chromoly Kingpin

Top Shouldered Bushing

Bottom bushing

New OEM seal - if you happen to need another new seal, they're available here.

An alternative to our brass bushing enforced chromoly rebuild kit is the turn-key chromoly kit with poly bushings available here

Tools required for this kit:

- 14mm socket, ratchet and combination wrench (Idler to chassis bolts)

- 24mm wrench or socket & breaker bar

- Ball joint separator ($20 at HF HF Link )

- Small ball peen hammer (for driving parts out - this is a hand assembled part, do not hammer it together)

- flat punch or decent sized flat-head screw driver

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ADHD Adventure Driven Hardcore Design - American Made Mitsubishi Montero Chromoly Idler Kingpin kit with brass bushings

  • $225.00

  • Ex Tax: $225.00

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Tags: Steering, Gen 2, Gen 2.5, ADD Exclusive,