For 4th generation DS model trucks '09-18 and '19-21"Classic"When lifting your truck, the stock upper arms become the limiting factor and hold back your suspensions performance. Our Camburg upper arms address these issues and more.  Replacing the stock ball-joint  with a larger 1.25 uni-ball bearing we’re able to gain wheel travel with a part that is considerably stronger and will last longer under extreme conditions. We build more caster and change the camber curve to correct geometry so the vehicle aligns correctly and improves driving characteristics and handling. Using the latest CAD/CAM engineering software we design these arms to the strictest standards using our FARO laser scan arm to model the OEM parts and frames. Manufactured in-house, we have the tubes CNC laser cut and bent, then are MIG welded in precision fixtures before sending out to be sandblasted and powder-coated. Our in-house CNC machine shop makes all the machined parts including the uniball mis-alignment spacers from heat-treated stainless steel. We pride ourselves in producing the best parts available under our own roof and control. Increases usable wheel travel Corrects camber and caster Eliminates weak factory ball-joints 4130 chromoly construction Laser cut and CNC bent tubes MIG welded CAD/CAM engineered Polyurethane frame pivot bushings with grease-able zerk fittings FK 1.25" PTFE-lined uniballs pre-installed Steel gray powder-coating All necessary hardware included and ready to install Made in the USA Designed for 1-3" of lift For models without air ride suspension For models without air ride suspension For 4th generation DS model trucks '09-18 and '19-21"Classic".