East Coast Gear Supply 14 Bolt Package Deal Ring & Pinion Yukon or Nitro Spool (30 or 40 spline) 4.56/4.88/5.13/5.38 thick cut gear Master install kit NOTE:Solid pinion spacers prevent loosening of the gear setup preload. Solid spacer and shims replace the crush sleeve. It takes a little longer to... MSRP: Was: Now: $800.00 Choose Options