Designed, engineered, tested, and assembled in Colorado, SPC Performance adjustable upper control arms are loaded with impressive 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. 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 driveability. The patented ball joint design gives more adjustability than any other arm on the market, use it in combination with cam adjusters on the lower arm to maximize tire clearance and minimize the need for frame mods. Use SPC #63020 to adjust thrust angle, replace OE lower cams with #86220. Sold as pairs. US Patent No. 7,513,514.

• Arm's adjustment range combine with OE adjusters corrects alignment angles for improved drivability and reduced tire wear & possible to move the tire forward to maximize clearance for larger tires without frame or fender modifications
• Arm's adjustment range combine with OE adjusters corrects alignment angles for improved driveability and reduced tire wear & possible to move the tire forward to maximize clearance for larger tires without frame or fender modifications
• Chromoly tube and forged steel nose construction provides maximum strength & clearance with additional caster provision for lifted vehicles built-in
• For Steel Knuckles Only!
• Front Adjustment Range: Camber ±2.00˚ / Caster -1.00˚ to +3.00˚
• Front Adjustment Range: Camber ±2.00° / Caster -1.00° to +3.00°
• New ball joint has 25% larger stud cross section than OE for superior strength & E-Nickel coating for superior corrosion protection while providing 80° of articulation & extended threads make these arms compatible with knuckle gusset kits
• New fully sealed ball joint architecture keeps grease in and contaminants out for a maintenance-free joint
• New xAxis™ sealed flex joints in bonded rubber bushings allow for extended suspension travel & superior noise vibration and harshness (NVH) characteristics
• One piece polymer race Ball Joint with modern grease formula ensures quiet smooth operation & low turning torque for reduced wear and extended life that tests like OE
• Required: 1 per axle
• Sold as a pair