Engineering Ford 9åÛ_ 4.11 Pro Gear w/ 35 Spline Pinion
Product Information
Strange Engineering STRP07990411 Ford 9″ 4.11 Pro Gear with 35 Spline PinionDesigned 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 breakThe 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 choiceMachined From 9310 Forged Steel
Heat Treated to Optimize Material Properties
Matched Ring & Pinion SetRing Gear
– 9″ OD
– Tooth count 37
– 10 bolt holes in each bolt size
– 7/16″-20 RH threads & 1/2″-20 RH threadsPinion
– 35 spline shaft
– Tooth count 9
– 1″-14 RH threadsNote
35 Spline Pinions Require Capable Pinion Supports
Will Not Fit OEM Or Daytona Style SupportsINSTALLATION KITS - Contact us for availabilityUsing Tapered Bearing Pinion Support
HD Pro & Drag race…….. R5238 / R5238WR
Ultra & Billet cases…. R5238UC / R5238UCRUsing Ball Bearing Pinion Support
HD Pro & Drag Race…… R5238B / R5238BR
Ultra & Billet cases… R5238UCB / R5238UCBR
Produced from a softer material, the teeth can flex as opposed to crack and breakThe 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 choiceMachined From 9310 Forged Steel
Heat Treated to Optimize Material Properties
Matched Ring & Pinion SetRing Gear
– 9″ OD
– Tooth count 37
– 10 bolt holes in each bolt size
– 7/16″-20 RH threads & 1/2″-20 RH threadsPinion
– 35 spline shaft
– Tooth count 9
– 1″-14 RH threadsNote
35 Spline Pinions Require Capable Pinion Supports
Will Not Fit OEM Or Daytona Style SupportsINSTALLATION KITS - Contact us for availabilityUsing Tapered Bearing Pinion Support
HD Pro & Drag race…….. R5238 / R5238WR
Ultra & Billet cases…. R5238UC / R5238UCRUsing Ball Bearing Pinion Support
HD Pro & Drag Race…… R5238B / R5238BR
Ultra & Billet cases… R5238UCB / R5238UCBR

Product Information
Strange Engineering STRP07990411 Ford 9″ 4.11 Pro Gear with 35 Spline PinionDesigned 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 breakThe 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 choiceMachined From 9310 Forged Steel
Heat Treated to Optimize Material Properties
Matched Ring & Pinion SetRing Gear
– 9″ OD
– Tooth count 37
– 10 bolt holes in each bolt size
– 7/16″-20 RH threads & 1/2″-20 RH threadsPinion
– 35 spline shaft
– Tooth count 9
– 1″-14 RH threadsNote
35 Spline Pinions Require Capable Pinion Supports
Will Not Fit OEM Or Daytona Style SupportsINSTALLATION KITS - Contact us for availabilityUsing Tapered Bearing Pinion Support
HD Pro & Drag race…….. R5238 / R5238WR
Ultra & Billet cases…. R5238UC / R5238UCRUsing Ball Bearing Pinion Support
HD Pro & Drag Race…… R5238B / R5238BR
Ultra & Billet cases… R5238UCB / R5238UCBR
Produced from a softer material, the teeth can flex as opposed to crack and breakThe 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 choiceMachined From 9310 Forged Steel
Heat Treated to Optimize Material Properties
Matched Ring & Pinion SetRing Gear
– 9″ OD
– Tooth count 37
– 10 bolt holes in each bolt size
– 7/16″-20 RH threads & 1/2″-20 RH threadsPinion
– 35 spline shaft
– Tooth count 9
– 1″-14 RH threadsNote
35 Spline Pinions Require Capable Pinion Supports
Will Not Fit OEM Or Daytona Style SupportsINSTALLATION KITS - Contact us for availabilityUsing Tapered Bearing Pinion Support
HD Pro & Drag race…….. R5238 / R5238WR
Ultra & Billet cases…. R5238UC / R5238UCRUsing Ball Bearing Pinion Support
HD Pro & Drag Race…… R5238B / R5238BR
Ultra & Billet cases… R5238UCB / R5238UCBR