U-Joint 1310 to 1330 conversion, spreads 3-5/8'' and 3-1/4'' caps 1-1/16''

This is a Spicer brand SDO solid racing U-Joint, which is also used in our racing driveshafts.  By deleting the grease fitting hole, an inherent weak point is eliminated in the “cross” of the U-joint.  Precision machined to very high tolerances to remove vibration causing play.