The TeraFlex JK U-bolt conversion kit replaces the OEM rear axle pinion flange with a standard 1310 CV cardan joint style yoke and U-bolt style connector. The conversion makes u-joint changes easier after breakages. These yokes must be used with a CV style/double cardan driveshaft.Fits: 07-Present Jeep Wrangler JK 07-Present Jeep Wrangler Unlimited JK Details: JK Rear Axle Pinion Yoke Kit Must Be Used With CV Style/Double Cardan Driveshafts Bare Steel Finish Sold As Each