GM 12 Blt 5.57 Pro Gear Set US/Strange Gear – Produced in USA

Drag Race Use 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

Designed For 4.11 & Numerically Higher Carriers

Will Not Fit Truck Rear Ends

Machined From 9310 Forged Steel
Heat Treated to Optimize Material Properties
Matched Ring & Pinion Set

Ring Gear
– 8.875″ OD
– Tooth count 39
– 12 bolt holes
– 3/8″-24 RH threads

Pinion
– 30 spline shaft
– Tooth count 7
– 7/8″-16 RH threads