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Suspension & Towing
1998-2007 Toyota 100 Series Land Cruiser, Extended Travel Ball joint style, Nitro Upper Control Arms (Pair)
Extended Travel Ball joint style
Nitro Gear Upper Control Arms
1998-2007 100 Series Land Cruiser
HDJ100 / FDJ100 / UZJ100
1998-2007 Lexus LX470
The short-comings of OEM 100 Series IFS:
In 1998 Toyota released the all new 100 series Land Cruiser to replace its solid axle 80 series models. While providing a much smoother ride and better handling on the road, the IFS proved to be very limited in suspension travel. Most lift kits for the IFS setup simply raise the front end by means of adjusting/replacing the torsion bars which actually reduces overall down-travel. This is the result of aftermarket suspension kits only utilizing stock length shocks.
Driving over rough roads and potholes compounds this problem as the pre-loaded suspension, with fully extend shocks, has no more room for shock travel resulting in poor ride quality and premature shock failure. The only way to improve suspension travel is to run longer than stock shocks. The factory upper control arms also become a limiter as they will contact the shock body if using longer shocks. With a raised suspension height, the OEM upper ball-joint is forced to operate at an extreme angle and wider tires many times will not clear the factory upper control arms. The OEM ball-joint also has a potential to separate if a stock length shock were to break, leading to catastrophic failure of suspension, steering, and CV axle. Also, The OEM upper Ball joint is not sold separately so you must buy the whole arms, which cost more than the pair of our heavy duty extended travel Ball-joint type arms available here. As an added benefit our arms accept the the Tundra type ball joint (as they are more common), they can be replaced with joints available at nearly any auto part store.
- To solve the extreme ball joint angle of the stock arms the ball-joint cup is clocked to run level on vehicles with 2-3" additional ride height.
- With the proper shock setup, this allows up to 50% increase in down travel over OE/Aftermarket suspension kits that use OE length shocks. (we offer these)
- The arms are 100% BOLT-ON and fit in the stock tapered ball-joint location in spindle. That's right no drilling, no welding, no tapping. Arms allow for proper alignment.
- They are also fully serviceable, as the bushings and ball-joints can easily be replaced. The ball joints and upper bushings include zerk fittings for quiet squeak-free operation.
- Made in USA, TIG Welded, Chromoly DOM tubing for strength versus the flimsy OEM stamped steel arms.
- This design allows for a lower profile, thus providing additional clearance for larger tires, and/or larger/ longer shocks.
- The arms utilize a sealed 2007 Tundra type upper ball joint, making them serviceable at regular auto part stores.
This listing is for the Upper Control Arms only.To Build and Purchase a Complete Suspension Kit email
for more info. If you already have aftermarket suspension, and looking to upgrade we also offer the extended length shocks needed to utilize the full increase in travel that these UCA's allow.
-To utilize the full benefit of these UCA’s see the recommended Icon Vehicle Dynamics extended travel shock, as we worked directly with Icon to develop the proper specs.
Icon Extended Travel Front 2.5” Internal Reservoir Shock
Icon Extended Travel Front 2.5” Remote Reservoir Shock
Icon Extended Travel Front 2.5” Remote Reservoir Shock w/ CDC Adjusters
We also recommend using a diff drop kit
Installation should be done by professionals with suspension experience. Suspension should be cycled prior to driving to avoid over-extension of steering components, cv’s etc.
Nitro Gear & Axle strives to provide the highest quality differential & axle components available. We take the steps necessary to ensure our parts are dependable. Our product range is continually growing to meet the needs of consumers for new ratios and applications. At Nitro we know differentials, and know what it takes to provide you with high quality components.
1998-2007 Toyota Landcruiser 100 Series HDJ100 FZJ100 UZJ100
1998-2007 Lexus LX470
Also available as a complete SUPER DELUXE SUSPENSION SYSTEM, with Matching King, Radflo, Bilstein, or Icon shocks, Diff Drop kit, Torsion Bars & Coil springs.
*All Nitro Gear & Axle brand products are warrantied to be free of manufacturer defects for the specified period. Warranty requests must be made by the original purchaser and submitted by the dealer purchased from. Any parts sent for warranty consideration must be pre-approved and shipped prepaid freight to our facility with copy of RGA for our inspection & determination. We will not pay for labor, shipping cost, loss of revenue or perishable goods, commercial losses, costs of telephone calls, shipping or general inconvenience. This is our only warranty expressed or implied. Unauthorized warranty returns may be refused. Warranty generally covers MFG defects in material or workmanship. Abuse, overloading, improper lubrication, misuse, commercial or competition use voids warranty. Normal characteristics are not warrantable, such as Gear whine. Minor cosmetic flaws, dings, burrs from shipping or manufacturing, are not considered defect, it is installer responsibility to address these at time of install. Customer is responsible for shipping charges if warranty is granted. Warranty is for the original purchaser/user, is not transferable. Warranty covers one replacement or credit solely at our discretion. Warranty determinations are at our sole discretion.
In addition to the above conditions, see special notes for these products:
Ring & Pinion – Warrantied against manufacturing defects. 2 years from date of purchase. Must provide set-up specs.
Chromoly front Axles, Excalibur Joints, 30/30 Birfield kits - Warrantied against manufacturing defects for the life of the vehicle. These products are also covered for Breakage. The Shaft / joint must be BROKEN. Wear, twisting, bending are not warrantable. Damages caused by failure of other parts are not warrantable, for example broken U-joint (other than Nitro Excalibur) causing damage to Axle ears.
Rear Chromoly Axles - Warrantied against manufacturing defects for 5 years. These products are also covered for Breakage. The Shaft must be BROKEN. Worn, twisted, or bent axles are not warrantable.
NEW DESIGN, now using a sealed ball joint!
Replacement upper ball joint
Replacement Poly UCA bushings
Lower profile design, thus providing additional clearance for larger tires, and/or larger/ longer shocks.
Ball-joint cup is clocked to run level on vehicles with 2-3" additional="" ride="" height.
Up to 50% increase in down travel over OE/Aftermarket length suspension kits.
Fits in the stock tapered ball-joint location in spindle.
Fully serviceable bushings and ball-joints for easy replacement from local auto parts stores.
Ball joints and upper bushings include zerk fittings for quiet squeak-free operation.
TIG Welded, Chromoly DOM tubing for strength.
Made in USA.
Toyota, Replacement Upper Ball Joint (One Side)
Nitro Front 20mm Differential Drop Kit 98-07 Toyota Land Cruiser 100 Series IFS HDJ100 FZJ100 UZJ100
Upper Poly UCA Bushings, for JTOUCA-TLC100 (Req. 4 per Arm)
Hitch, 2", Nitro Receiver Shackle (Accepts 3/4" Shackles/D-Rings)
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