Ford 9″ 4.86 Pro Gear with 28 Spline Pinion Richmond Gear – Produced in Italy

 
Designed Specifically For Drag Racing

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 Forged Steel
Heat Treated to Optimize Material Properties
Matched Ring & Pinion Set

Ring Gear
• 9″ O.D.
• Tooth count 34
• 10 bolt holes in each bolt size
• 7/16″-20 RH threads & 1/2″-20 RH threads

Pinion
• 28 spline shaft
• Tooth count 7
• 3/4″-20 RH threads

Installation Kit For Tapered Bearing Pinion Support
Daytona style – R5236 / R5236WR
HD Pro & Drag race – R5237 / R5237WR
Ultra case – R5237UC / R5237UCR

Installation Kit For Ball Bearing Pinion Support
HD Pro & Drag Race – R5237B / R5237BR
Ultra & Billet cases – R5237UCB / R5237UCBR