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Filthy Motorsports: Store > AMC Model 20
AMC Model 20 / AMC 20 / M20 Axle Parts, Gears, and Upgrades

Axle Specifications:

Ring Gear Diameter: 8.875
Diff Cover Bolts: 12
Ring Gear Bolts: 8
Axle Spline Count: 29
Axle Shaft Style: Semi-Floating
C-Clips: No
Crush Sleeve Yes
Pinion Nut: 1-1/8"
Pinion Support: No
Carrier Breaks: 2.73 / 3.08
Dropout Carrier: No

Torque Specifications:

Pinion Preload New: 14 to 19 in-lbs
Pinion Preload Reused: 6 to 8 in-lbs
Ring Gear Backlash: .006" to .010"
Ring Gear Bolt Torque: 65 ft-lbs
Carrier Bearing Caps: 65 ft-lbs

Popular Applications:

Hummer H1 1992 - 2006 F / R
Jeep CJ5 / Cj7 / CJ8 1976 - 1986 Rear
Jeep Wagoneer 1979 - 1986 Rear
Jeep J10 Truck 1976 - 1986 Rear
AMC AMX 1968 - 1970 Rear

Axle Images:



Axle Details

The AMC Model 20 Axle, also known as the AMC 20, M20 and Jeep Model 20 axle can be found under older AMC cars, a handful of CJ model Jeeps, and in IFS and IRS configurations in the military and civilian Hummer H1. It features an 8.875" diameter ring gear with 29 spline axle shafts that are attached via bolts instead of c-clips.

Note: This axle has a Carrier Break and gear changes may require a different carrier or thick gears.
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ARB Air Locker
M20 / AMC Model 20 ARB Air Locker | 29 Spline (2.73 & Down)
List Price: $1,147.13
Your Price: $997.50

ARB Air Lockers use compressed air to engage and disengage their internal locking mechanism at the simple flip of a switch. They feature components and gears that are 30% stronger than OEM differentials to offer superior strength, durability, and off-road traction.
ARB Air Locker
M20 / AMC Model 20 ARB Air Locker | 29 Spline (3.08 & Up)
List Price: $1,081.58
Your Price: $940.50

ARB Air Lockers use compressed air to engage and disengage their internal locking mechanism at the simple flip of a switch. They feature components and gears that are 30% stronger than OEM differentials to offer superior strength, durability, and off-road traction.
Detroit Locker
M20 / AMC Model 20 Detroit Locker | 29 Spline (2.73 & Down)
List Price: $765.46
Your Price: $639.95

Detroit Lockers have a legendary reputation with off-roaders and feature a heavy duty, efficient, and effective design that offers 100% traction to both wheels while still allowing for wheel speed differentiation for easy turning on the street and other high-traction surfaces.
Detroit Locker
M20 / AMC Model 20 Detroit Locker | 29 Spline (3.08 & Up)
List Price: $765.46
Your Price: $639.95

Detroit Lockers have a legendary reputation with off-roaders and feature a heavy duty, efficient, and effective design that offers 100% traction to both wheels while still allowing for wheel speed differentiation for easy turning on the street and other high-traction surfaces.
Eaton Detroit TrueTrac
M20 / AMC Model 20 Eaton Detroit TrueTrac | Front 29 Spline (2.73 & Down)
List Price: $681.10
Your Price: $599.95

Detroit Truetrac Lockers are maintenance free, fully mechanical, Torsen style limited slip differentials with helical gears instead of clutch packs (which wear out over time) to provide constant torque to both wheels while still allowing for smooth turns on pavement.
Eaton Detroit TrueTrac
M20 / AMC Model 20 Eaton Detroit TrueTrac | Rear 29 Spline (2.73 & Down)
List Price: $690.49
Your Price: $609.95

Detroit Truetrac Lockers are maintenance free, fully mechanical, Torsen style limited slip differentials with helical gears instead of clutch packs (which wear out over time) to provide constant torque to both wheels while still allowing for smooth turns on pavement.
Eaton Detroit TrueTrac
M20 / AMC Model 20 Eaton Detroit TrueTrac | Rear 29 Spline (3.08 & Up)
List Price: $690.49
Your Price: $589.95

Detroit Truetrac Lockers are maintenance free, fully mechanical, Torsen style limited slip differentials with helical gears instead of clutch packs (which wear out over time) to provide constant torque to both wheels while still allowing for smooth turns on pavement.
OX Locker
M20 / AMC Model 20 OX Locker | 29 Spline (3.08 & Up)
List Price: $945.00
Your Price: $859.00

OX Lockers have a unique cable shifted locking mechanism that makes them extremely tough, durable, reliable, and easy to use. A heavy duty differential cover is included and the mechanical or air operated shifters (sold separately) make for an easy installation in any vehicle.
Spartan Locker
M20 / AMC Model 20 Spartan Locker | 29 Spline
List Price: $463.97
Your Price: $386.64

Spartan Lockers are ratchet style lockers that replace the spider gears in your stock differential to provide traction to both wheels when it is needed most. They are affordable, don't require removing the carrier for installation, and are covered by a one year warranty.
Yukon Spool
M20 / AMC Model 20 Yukon Full Spool | 29 Spline (3.08 & Up)
List Price: $306.54
Your Price: $266.56

Yukon Performance Spools are made of the highest quality materials and are the ultimate traction aid for full size trucks, high horsepower applications, and off-road racing. They are designed to replace your entire differential carrier and are backed by a 1 year warranty.
Yukon Master Ring and Pinion Install Kit
M20 / AMC Model 20 Yukon Master Overhaul Kit
List Price: $261.58
Your Price: $227.46

Yukon master overhaul kits include everything you need to rebuild your differential, install new ring and pinion gears or add a differential locker. Every component is of the highest quality and engineered specifically for your application to ensure accurate set up.
Yukon Minor Ring and Pinion Install Kit
M20 / AMC Model 20 Yukon Minor Overhaul Kit
List Price: $91.31
Your Price: $79.40

Yukon minor overhaul kits include all of the seals, shims, and small parts you need to install new ring and pinion gears or add a differential locker (using the existing bearings). Every part is of the highest quality and made specifically for each axle application.
Yukon Gear and Axle Ring and Pinion Sets
M20 / AMC Model 20 Yukon Ring and Pinion Gears | 3.08

Yukon ring and pinion gears are built for heavy duty applications like racing, towing, and rock crawling. They're machined from the finest materials using modern gear grinding technology to give each set superior strength and the smoothest and most precise finish.
Yukon Gear and Axle Ring and Pinion Sets
M20 / AMC Model 20 Yukon Ring and Pinion Gears | 3.31
List Price: $344.07
Your Price: $299.19

Yukon ring and pinion gears are built for heavy duty applications like racing, towing, and rock crawling. They're machined from the finest materials using modern gear grinding technology to give each set superior strength and the smoothest and most precise finish.
Yukon Gear and Axle Ring and Pinion Sets
M20 / AMC Model 20 Yukon Ring and Pinion Gears | 3.54
List Price: $344.07
Your Price: $299.19

Yukon ring and pinion gears are built for heavy duty applications like racing, towing, and rock crawling. They're machined from the finest materials using modern gear grinding technology to give each set superior strength and the smoothest and most precise finish.
Yukon Gear and Axle Ring and Pinion Sets
M20 / AMC Model 20 Yukon Ring and Pinion Gears | 3.73
List Price: $319.64
Your Price: $277.95

Yukon ring and pinion gears are built for heavy duty applications like racing, towing, and rock crawling. They're machined from the finest materials using modern gear grinding technology to give each set superior strength and the smoothest and most precise finish.
Yukon Gear and Axle Ring and Pinion Sets
M20 / AMC Model 20 Yukon Ring and Pinion Gears | 4.11
List Price: $328.41
Your Price: $285.57

Yukon ring and pinion gears are built for heavy duty applications like racing, towing, and rock crawling. They're machined from the finest materials using modern gear grinding technology to give each set superior strength and the smoothest and most precise finish.
Yukon Gear and Axle Ring and Pinion Sets
M20 / AMC Model 20 Yukon Ring and Pinion Gears | 4.56
List Price: $296.17
Your Price: $257.54

Yukon ring and pinion gears are built for heavy duty applications like racing, towing, and rock crawling. They're machined from the finest materials using modern gear grinding technology to give each set superior strength and the smoothest and most precise finish.
Yukon Gear and Axle Ring and Pinion Sets
M20 / AMC Model 20 Yukon Ring and Pinion Gears | 4.88
List Price: $328.41
Your Price: $285.57

Yukon ring and pinion gears are built for heavy duty applications like racing, towing, and rock crawling. They're machined from the finest materials using modern gear grinding technology to give each set superior strength and the smoothest and most precise finish.
   
 
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