ClickCease 1997-1999.5 Ford 9.75" 12 Bolt - Limited Slip Posi Package w/ Gears & – Rigid Axle


1997-1999.5 Ford 9.75" 12 Bolt - Limited Slip Posi Package w/ Gears & Install Kit

$1,575.38 $1,052.06

POSI-F9.75-34-RA F9.75-355-RA F9.75MK-A

Positraction, Gear & Install Package

Rigid Axle

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Ford 9.75" Gear & Posi Package


Package Includes:

(1) Limited Slip Positraction Carrier
(1) Ring and Pinion Gear Set (Choose Ratio Above)
(1) Differential Master Install Kit

- *Note: This Gear & Posi Package with master bearing kit fits 1997-1999.5 Ford 9.75" 12 Bolt differentials with 2.6875" OD Outer Pinon Cup.

- Our Rigid Axle Eaton style limited-slip positraction unit uses composite clutches for smooth and aggressive traction. The carrier case is forged steel for strength and reliability. Because this carrier is an eaton style clutch posi, it can be rebuilt and serviced. Our Rigid Axle positraction is the perfect choice for daily drivers, weekend warriors, towing, basic off-road use, and street/strip applications. See below for some key features and tech specifications:

  • Fits All Gear Ratios
  • Fits Ford 9.75" with 34 Spline Axles
  • Fully Machined, High Strength Nodular Case
  • Composite Clutches
  • Forged 4320 Chromoly Spider Gears
  • Serviceable & Rebuildable Design
  • 1 Year Warranty against Manufacturer Defects
  • Non-Synthetic GL-5 Gear Oil Recommended
  • Friction Modifier Required

- Rigid Axle's aftermarket ring and pinion gear sets are made from heat treated 8620 steel. Our aftermarket gear set is made using a five-cut, face milled manufacturing process. Once set up correctly, this will give a square contact pattern on the drive and coast side of each tooth. We are proud of our ring and pinion lines, and you will be too!

- Remember to properly break in your new gear set! Click here for instructions!

- Our Master overhaul kits come with everything you need to replace, modify, or rebuild your differential. This will allow you to get the job done quicker, and cheaper at the end of the day. Rigid Axle master bearing install kits include:

  • Both (Inner & Outer) Pinion Bearings and Races
  • Carrier Bearings and Races
  • Pinion and Carrier Shims
  • Pinion Seal
  • Pinion Nut
  • Ring Gear Bolts
  • Crush Sleeve
  • Complete Shims
  • Threadlocker
  • RTV Sealant or Cover Gasket

- Rigid Axle is proud to offer our customers a full line of differential, transfer case, and transmission parts. We specialize in complete rebuild kits for domestic cars and trucks. Give us a call with your year, make, and model and we'll build you a custom kit for your build!


  • Ford Expedition (1997-1999.5)
  • Ford F-150 1/2 Ton (1997-1999.5)
  • Ford E-150 1/2 Ton (1997-1999.5)
  • Ford E-250 3/4 Ton (1997-1999.5)
  • Ford F-250 3/4 Ton (1997-1999.5)
  • Lincoln Navigator (1997-1999.5)


  • Differential Model: Ford 9.75"
  • Carrier Breaks: None
  • Cover Bolt Quantity: 12 Bolt
  • Ring Gear Diameter: 9.75 Inch
  • Ring Gear Bolt Quantity: 12
  • Ring Gear Material: 8620 Steel
  • Ring Gear Rotation: Standard
  • Pinion Diameter: 1.970 Inch
  • Pinion Spline Count: 31
  • Outer Pinion Cup: 2.6875 OD Inch
  • Axle Spline Count: 34

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