Since 1984, Motive Gear has supplied drivetrain components around the world. Motive Gear offers drivetrain products including Motive Gear ring and pinions. Motive Gear Performance Ring and Pinion sets include Motive Gear Ford 9" Performance Ring and Pinion Sets featuring a heavy duty standard weight ring and 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. Motive Gear Ford 9" aAXa Performance Lightweight Ring and Pinion Sets are considerably lighter than standard ring and pinion sets, aAXa Series gears will improve performance and durability. Heat treated 8620 material is used and the gears will fit aluminum or steel housings. Pinion diameter is 1.313" with 28 splines and ring gear installs with 10-7/16" x 20 RH bolts. Recommended for use in NASCAR, NASCAR Cup, NASCAR Grand National, NASCAR Craftsman Truck, ARCA and other sanctioning groups. Choose from 22 ratios from 4.30 through 7.33. We feature Motive Gear Ring & Pinion Sets and Motive Gear Performance Ring & Pinion Sets at low everyday prices!