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12) 1/2″ x
For those racers seeking a compact supercharger/gear drive setup
– Custom width at no additional charge
Enhances handling & cornering characteristics
Torque Sensitive Mechanical Unit
Ford 9″ 3.89 Pro Gear with 35 Spline Pinion Motive Performance Gear – Produced in Italy SBF F-1/F-2 12) 1/2″ xFord 9" 3. 89 Motive Performance Pro Gear with 35 spline pinion PN : RP07990389 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