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
See Description Tab below for additional Specifications.
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This product has multiple variants. The options may be chosen on the product page
Designed For Drag Racing OnlyPro 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.
The superior quality of US Gear products is the result of outstanding design, meticulous engineering and state of the art manufacturing processes perfected over three decades and ISO certified. US Gear precision made ring and pinions are made in the USA and designed to maximize performance and durability. Made from 9310 material to withstand the rigors of Drag Racing, 35 spline pinion. Requires special pinion support or spacer when used with a Strange Ultra Case.
Material: 9310
Select options
This product has multiple variants. The options may be chosen on the product page
Pro Series Spool
For 40 spline axles
Fits 3.250″ bore aftermarket case
Features
• Machined from 4140 forged steel
• Lightened to reduce rotating weight
• Broached 40 spline with 45° pressure angle
• Critical dimensions left oversize prior to heat treatment
• Heat treated for further gains in strength
• Finish machining after heat treat to bring surfaces within specifications
• Designed and machined by Strange Engineering
• Forged in the USA
Ford 9″ Description: Pro Series Spool
For 35 spline axles
Fits 3.250″ bore aftermarket case
Features
• Machined from 7075-T6 billet aluminum
• Lightened to reduce rotating weight
• Broached 35 spline with 30° pressure angle
• Black anodized finish
