Designed, engineered, tested, and assembled in Colorado, SPC Performance adjustable upper control arms are loaded with features. Improve suspension travel, handling, and tire wear while centering the tire in the wheel well for maximum clearance needed for oversized tires. Now equipped with maintenance-free ball joints and free-pivoting xAxis sealed flex joints in bonded rubber sleeves, for correction of alignment angles and restoration of factory ride quality. A forged steel design provides the strength and durability needed for the most demanding environments. SPC adjustable control arms have improved clearance to get around the spring bucket and a full 80° of articulation in the ball joint - more than any other offering available. When trucks are lifted, caster and camber angles are affected that can lead to poor handling characteristics such as 'wandering'. SPC control arms have positive caster built-in for lifted vehicles to restore alignment angles and drivability. The patented ball joint design allows the tire to be positioned correctly in the wheel well and additional adjustment in the OE lower arms can maximize placement for oversized tires to avoid fender trimming. If replacement lower adjustment cams are needed, see part #86250 or #86252. Sold as pairs. US Patent No. 7,513,514.

These truck sleeves will correct caster and camber on trucks equipped with the Dana Super 60 solid axle, like the F450, F550 and GM Toptick. This set includes one each of 9 different sleeves ranging from 0 to 2° offset. Have the sleeve you need on hte shelf and ready to be used when you need it. Individual sleeves are also available. See part numbers 23231 through 23239.

California Residents WARNING

Use these high strength steel allow shims (sold in a box of 6) to adjust caster and pinion angels 0.5° on your most rigorous applications. Designed for 4" wide leaf springs, this steel shim will adjust steer or drive axles on everything from cement and garbage trucks to OTR. Using "Z blocks" on your axle? Take a look at our axle spacers, PN 10798 to spread the load and tweak your ride height.

California Residents WARNING

Use these high strength steel alloy shims (sold in a box of 6) to adjust caster and pinion angles 2.5° on your most rigorous applications. Designed for 4" wide leaf springs, this steel shim will adjust steer or drive axles on everything from cement and garbage trucks to OTR. Using "Z blocks" on your axle? Take a look at our axle spacers, PN 10798 to spread the load and tweak your ride height.

California Residents WARNING

Use these high strength steel alloy shims (sold in a box of 6) to adjust caster and pinion angles 2.0° on your most rigorous applications. Designed for 4" wide leaf springs, this steel shim will adjust steer or drive axles on everything from cement and garbage trucks to OTR. Using "Z blocks" on your axle? Take a look at our axle spacers, PN 10798 to spread the load and tweak your ride height.

California Residents WARNING

Use these high strength steel alloy shims (sold in a box of 6) to adjust caster and pinion angles 1.0° on your most rigorous applications. Designed for 4" wide leaf springs, this steel shim will adjust steer or drive axles on everything from cement and garbage trucks to OTR. Using "Z blocks" on your axle? Take a look at our axle spacers, PN 10798 to spread the load and tweak your ride height.

California Residents WARNING

Use these high strength steel alloy shims (sold in a box of 6) to adjust caster and pinion angles 3.0° on your most rigorous applications. Designed for 4" wide leaf springs, this steel shim will adjust steer or drive axles on everything from cement and garbage trucks to OTR. Using "Z blocks" on your axle? Take a look at our axle spacers, PN 10798 to spread the load and tweak your ride height.

California Residents WARNING

This Next Generation sealed, maintenance-free adjustable ball joint replacement is the evolution of ball joint design. Upgrade or replace worn ball joints on your SPC Performance Adjustable Upper Control Arms with these revolutionary new joints. Designed, engineered and assembled in Colorado, these next generation ball joints are the result of a relentless pursuit of perfection and performance. Features include: A new sealed, maintenance-free design with Forged steel housing featuring a patented design for camber & caster adjustment with a corrosion preventative coating. A new One Piece Polymer race for low turning torque and smooth operation. A massive 36mm ball that features 80° of articulation and 25% increase in neck cross section vs. OE. Forged ball stud includes unique E-Nickel coating for superior internal corrosion protection and provision for spindle gussets on most models. New sealed boot design to keep grease in and contaminants out. New grease formula for smooth operation and reduced wear. These ball joints are reverse compatible and a direct replacement for the SPC upper control arm sets. Replaces Ball Joint on SPC Arms - 25455, 25465, 25480, 25490

California Residents WARNING

Double the change provided by the OE toe cam with this replacement cam from SPC. Use this kit to take advantage of a full ±2° adjustment or simple replace corroded and damaged toe cams on teh Acura RDX. Depending on how much change you need, you may need to use rotary file #85130 to extend factory toe slot and take full advantage of the extended range on this cam bolt. Kit is sold per side, one cam bolt per kit.

California Residents WARNING

The Cam Bolt Kit is a replacement for the OE adjusters. The OE bolts on Toyota trucks and SUVs are frequently "frozen" and do not allow for adjustment. Remove the bolt assembly and replace it with an SPC cam kit to get up to ±1.50° camber and caster change. OE adjuster assemblies that are severely corroded may require SPC's press tool 40915 for removal, making the job quick and easy.

California Residents WARNING