Specifically Designed for Drag Racing
Requires Aftermarket Components
Case designed to utilize a 10″ gear set
Pinion support with the ability to use 35 spline pinion gear
Housing constructed with additional clearance for 10″ ring gears
Will Not Fit OEM Cases or Housings
The ring gear is manufactured to 10″ specifications before the O.D. is reduced to 9.4″
Results in a much stronger tooth design than possible with 9″ or 9 1/2″ Pro Gears
Machined From 9310 Forged Steel
Heat Treated to Optimize Material Properties
Matched Ring & Pinion Set
Ring Gear
• 9.4″ actual O.D.
• Tooth count 35
• 10 bolt holes in each bolt size
• 7/16″-20 RH threads & 1/2″-20 RH threads
Pinion
• 35 spline shaft
• Tooth count 9
• 1″-14 RH threads
Installation Kits
For Tapered Bearing Pinion Support
Ultra & Billet cases – R5238UC / R5238UCR
For Ball Bearing Pinion Support
Ultra & Billet cases – R5238UCB / R5238UCBR
