Ford 9″ 3.89 Pro Gear with 35 Spline Pinion US/Strange Gear – Produced in USA Bullet – Multiple lower control arm

– Multiple lower control arm mounting holes

– Equipped with outer o-ring

F-Body mounts

aluminum threaded body

Ford 9″ 3.89 Pro Gear with 35 Spline Pinion US/Strange Gear – Produced in USA Bullet – Multiple lower control armFord 9" 3. 89 US Strange Pro Gear with 35 spline pinion PN : RP07990389US Designed For Drag Racing Only Pro Gears may be necessary when tooth breakage occurs with Standard gear sets Produced from a softer material, the teeth can flex as opposed to crack and break The life expectancy can vary anywhere from 15 to 300 runs depending on the vehicle If a Standard gear provided acceptable life, a Pro gear may not be the right choice Machined From 9310