You've selected the kit with U-bolts.

Forged, 24 spline, 1310, U-bolt style yoke for JK D30/44 front differentials with new U-bolts.  This yoke takes a 1310 u-joint (3.2188" cap to cap wide, 1.0625" cap diameter) and U-bolts (NOT straps). 

WARNING: Some differentials use a crush sleeve to set the pinion bearing preload. Over tightening the pinion nut on a differential that has a crush sleeve can cause catastrophic failure of the differential. If you're not sure of what a crush sleeve is, or if your differential has one, give us a call.

Why the yoke is great:

• FORGED will beat the same part made from billet, or cast...period.  The forging process forms the metal grain along the contours, and results is a stronger part.  Forging also compacts the grain structure which nearly eliminates failures from voids or inclusions.
• U-bolt style is superior to straps in nearly every way.  The U-bolt is nearly impossible to shear, but the head of a 5/16" bolt in a strap can pop like a pimple.  There's nothing to peel back on a U-bolt, but the strap can get caught.  Plus the U-bolt is simple to identify, a 1410 u-joint takes a 1410 U-bolt.  Straps have all sorts of different length, width, and thread pitch differences for the same size u-joint depending on application.
• OE spline fitment is what every yoke should have.  Most yokes slide on, and aside from a gross error, work just fine....BUT an OE spline fitment requires encouragement from a 3 pound dead blow.  It would take hundreds of thousands of miles to wear out splines, but we make them so they'll NEVER wear out.

Specifications:

• U-joint size:  1310, U-bolt style, 3.2188" cap to cap wide, 1.0625" cap diameter
• Seal surface OD:  1.850"