ARCHIVE Longer Travel Ball Joint style UCA upper control arms for 98+ Land Cruiser UZJ100 HDJ100 FZJ100

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Gear & Axle parts for ALL Toyotas new or old...
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UPDATED: JUSTDIFFERENTIALS UCA'S NOW WITH REPLACEABLE SEALED BALL JOINTS!!

100 Series Super Deluxe Suspension Kit with Icon extended Shocks and Ball joint UCA's Click

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The uniball type were very good, there was a general perception that they required maintenance, and that the 100 series crowd being more into oem like components. For this reason, we redesigned them to use a ball joint. I've run the prototypes for 3 years with no servicing, other than normal preventative grease,as the upper bushings and the ball joints are greasable.

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 heavy duty extended travel Ball-joint type arms available here. As an added benefit our arms accept the Tundra type ball joint (as they are more common), they can be replaced with joints available at nearly any auto part store.

The Solution:
- 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 suspension kits that use stock length shocks.
- 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.
- NEW!! The arms utilize a sealed 2007+ Tundra type upper ball joint, making the replacecements readily available at regular auto part stores.


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uca comp.webp
 
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More info

Prior to the production arms, I ran several prototypes. After testing several prototypes, the design has been in use on my own daily driven 99 UZJ100 now with Icon shocks made specifically for use with this kit. , slee diff drop, limiting straps, 35" tires, 4.88 and more. They've been subjected to 40K plus miles of use, from -10F ice/snow driving to 100 degree desert highspeed washboard, muddy trails and more. I live IN the Cascade mountains and frequently take rough washboard / rutted FS/ORV roads as shortcut between towns. Prior to the arms and shocks I was not happy with the suspension on rough roads since the downtravel was so limited and topped out the shocks constantly. If you have stock length shocks with 2-3" raised height, then the tbars still have a lot of force on the shocks at full extension/droop. It is SOOO much better now
 
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Thanks

Thanks to all the purchasers of these. Time for yet another batch! Now we've got hundreds of these out there on all continents besides Antarctica (as far as I know)
 
Looking at new lower front ball joints, have read your thread, looked at your site, all seem to be upper control arms, or am I just not looking properly?, please advise my next move, I have ifs with ahc and want to keep it that way for now
 
Do you offer any discounts to mud members?
 

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