Spicer Dana 60 Upper Kingpin Bushing (Genuine OE Replacement) 2011-jeep-wrangler-esi5160466 but the OEM U-joint shafts

but the OEM U-joint shafts become a limiting factor when adding lockers

OEM Outer Spline: 27

Crane Axle Front UB Wilwood Brake Kit (Part # CA01039N)

Reid Racing knuckles

and high-performance off-road suspension systems

Spicer Dana 60 Upper Kingpin Bushing (Genuine OE Replacement) 2011-jeep-wrangler-esi5160466 but the OEM U-joint shaftsThe Spicer Upper King pin Bushing is a genuine OE replacement designed for all Dana 60 kingpin front axles. Built to the same standards as factory Dana Spicer components, this synthetic kingpin bushing restores proper knuckle preload, steering feel, and front end stability. Whether you're rebuilding a worn kingpin axle or refreshing a work truck, W series Dodge, classic GM K series, or Ford Super Duty, this is the correct upper kingpin bushing used