Jeep JK Wrangler, 4D, 4" Lift, Base Level Suspension System, RockJock, (RJ-JK4DR0-103) DAN706527X-HD Inner dimensions: 1-1/4"-12 right hand

Inner dimensions: 1-1/4"-12 right hand threads

Gear Ratio: 5

2-5/16" of threaded area

The most common form of axle shaft and u-joint failure is when the ear of the shaft wallows out enough for the cap to turn

Jeep JK Wrangler, 4D, 4" Lift, Base Level Suspension System, RockJock, (RJ-JK4DR0-103) DAN706527X-HD Inner dimensions: 1-1/4"-12 right handRockJock's Driver Lift Kit for JK Wrangler Unlimited provides 4 inches of lift and allows for efficient clearance of up to 37 in. tall tires (larger tires will require aftermarket fenders and minor trimming)! Comprised of only the highest end components in the areas of strength, fit, finish, function, and the engineering to back them, this kit is more than sufficient for those who want to lift their vehicle, install big tires and maybe hit some dirt