a cross - track plunging constant velocity joint assembly includes an inner race having an outer diameter , an axial length , inner ball tracks , and a spline engageable with a first torque transfer member . an outer race has an inner diameter , an outer diameter , and outer ball tracks . the outer race is connectable to a second torque transfer member . a cage having multiple windows is disposed between the inner and outer races . a plurality of balls having a ball diameter are held by the cage within the windows and engage pairs of the inner and outer ball tracks . the balls define a joint pitch circle diameter . the inner race has a plunge depth within the outer race . the ratio of 1 . 2 ≦≦ 1 . 7 is satisfied .