ClickCease AMC Model 20 8.875" 12 Bolt - No Slip Posi Package w/ Master Bearing K – Rigid Axle


AMC Model 20 8.875" 12 Bolt - No Slip Posi Package w/ Master Bearing Kit

$1,520.04 $952.34


Positraction, Gear & Install Package

Rigid Axle

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AMC Model 20 - No Slip Posi Package


Package Includes:

(1) No Slip Open Differential Positraction
(1) Ring and Pinion Gear Set (Choose Ratio Above)
(1) Rear Master Bearing Install Kit

- Our No-Slip Traction System automatically distributes engine power to the drive wheels for maximum traction output while allowing full differentiation for turning. It eliminates the affliction of standard “open” differentials that direct all engine power to a slipping wheel. It also provides superior traction output over “limited-slip” types of traction adding differentials that still direct most of the engine power to a slipping wheel. When most of the power is delivered to a slipping wheel, the dreaded results of becoming stuck often occurs. For high performance applications that constantly strive to gain horsepower, losing precious power to a slipping wheel is unacceptable. Our No-Slip Traction System gets rid of unwanted tire spin and delivers optimum traction performance. See below for some key features and tech specifications:

  • Smooth & Quiet Operation
  • Fully Automatic
  • Installs easily inside open, limited slip, and locking differential cases
  • Maximum power transfer
  • No special tool required
  • Extreme duty Zytanium cross pin
  • Precision synchronization control makes friction clutches obsolete
  • Great for both 2wd and 4wd applications

- 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!


  • AM General Hummer (1992-2001)
  • American Motors American (1967-1968)
  • American Motors AMX (1968-1970)
  • American Motors AMX (1978-1979)
  • American Motors Concord (1978-1979)
  • American Motors Gremlin (1972-1976)
  • American Motors Hornet (1970-1977)
  • American Motors Javelin (1968-1974)
  • American Motors Marlin (1967)
  • American Motors Matador (1971-1978)
  • American Motors Pacer (1978-1979)
  • American Motors Rambler (1969)
  • American Motors Rebel (1967-1970)
  • American Motors Spirit (1979)
  • Hummer H1 (2002-2004)
  • Hummer H1 (2006)
  • Jeep Cherokee (1979-1983)
  • Jeep CJ5 (1976-1983)
  • Jeep CJ7 (1976-1986)
  • Jeep Comanche (1986)
  • Jeep Grand Wagoneer (1984-1986)
  • Jeep J10 (1979-1986)
  • Jeep Scrambler (1981-1985)
  • Jeep Wagoneer (1979-1983)


  • Differential Model: AMC Model 20
  • Cover Bolt Quantity: 12
  • Carrier Breaks: 2.73 / 3.08
  • Carrier/Axle Spline Count: 29
  • Ring Gear Diameter: 8.875”
  • Ring Gear Rotation: Standard
  • Ring Gear Material: 8620 Steel
  • Ring Gear Bolt Quantity: 8
  • Ring Gear Bolt Size: 7/16" x 20 RH
  • Pinion Diameter: 1.625"
  • Pinion Spline: 28
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