1982-2002 A/4WD S-10 Adjustable Pro-Touring Front Upper Control Arms

The first and only adjustable A/4WD upper control arm on the market

These DO fit ZR2 optioned trucks

Rugged steel adjustment tubes

+1” Howe ball joints improve camber gain through travel, with almost 0 friction

Integral ball joint holder offers smaller and lighter packaging

Teflon (PTFE) lined chromoly rod ends for maximum life and minimum friction

On-vehicle adjustable, no unbolting needed

No shims or cam bolt adjustments needed, EVER

Grade 8 fasteners

Comes with anti seize pre-applied to aid in adjustment and prevent galling

Comes pre-greased

Comes ready to install

Perfect for lowered vehicles

**IMPORTANT INSTALLATION INFORMATION**

Make sure the taper fully engages in the spindle. Clean the female taper with some brake clean and put some sharpie on the stud, the shoulder on those long studs sometimes touches the spindle before the taper is actually locked in and it its not tightened correctly when it does so. Tighten it and break it back apart, if it comes out easily that’s an indication its not locking in the taper, if the sharpie is still there untouched then its for sure not tightening correctly. If that’s the case you need to take roughly .020 to .070 from the top flat surface of the spindle.

See the image below. The first picture is a 2WD spindle with the taper engaged correctly, the second image is an unmodified 4WD spindle with the shoulder hitting before its seated. The final pic shows a good sharpie test.

Only about 1/3^rd or so customers have had this issue, so double check taper engagement before you tear the spindle off to modify it. A flap disc will work, a mill is ideal. The machined flat surfaces for the ball joint “bosses” are all parallel to one another so it could be bolted to a mill bed directly. The only surfaces that need to stay perpendicular to the stud bore are the ones the nuts seat on, opposite from where the modification needs to be made.

If that’s not something you want to do we *can* swap the studs out for shorter ones with no shoulder on them. These are .5″ taller than stock.