Here are some similar items you might be interested in
Rubicon Express Slip Yoke Eliminator Kit
Description
Stock Jeeps have a slip yoke style output shaft at the rear driveline. This design is not conducive to off road use nor the steeper operating angles caused by suspension lifts. To ensure smooth and durable driveline operation, convert to a fixed yoke output and install a CV driveshaft (RE1898). This is highly recommend on all lifts 3.5" and taller.