9" Ford Ring and Pinion gear sets. A heavy duty standard weight ring & pinion set for the popular 1957-up Ford 9" rear end, made of 8620 material which has been heat treated for extra strength and durability. Pinion diameter is 1.313" with 28 splines. Ring gear installs with 10-7/16" x 20 RH bolts and fits aluminum or steel housings. Choose from 17 ratios ranging from 3.50 through 6.50.This item has a special shipping fee of $9.99ea and all orders will be charged a $10.99 handling fee. For more information see our shipping page.