Nitro Gear & Axle Model 20 Standard Open Inner Parts Kit

Sale Price $305.80
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AMC M20 Standard Spider Gear Set

Nitro offers a wide range of Spider Gear kits for light duty cars & trucks. Available for open differential Fits, as well as many positraction units, each new application is test fitted and inspected for precision fitment. Nitro Spider Gear kits include Side Gears, Pinion gears, Cross shaft, retainer bolt or pin, and thrust washers when/where applicable.


1968-1970 AMC AMX

1976-1983 AMC Jeep CJ5

1976-1986 AMC Jeep CJ7

1981-1986 AMC Jeep CJ8

1978-1979 AMC Concorde

1992-2006 Hummer H1

1992-2006 Hummer H1

1970-1977 AMC Hornet

1976-1986 Jeep J10

1967-1974 AMC Javelin

1971-1978 AMC Matador

1975-1980 AMC Pacer

1979-1986 Jeep Wagoneer


*All Nitro Gear & Axle brand products are warrantied to be free of manufacturer defects for the specified period. Warranty requests must be made by the original purchaser and submitted by the dealer purchased from. Any parts sent for warranty consideration must be pre-approved and shipped prepaid freight to our facility with copy of RGA for our inspection & determination. We will not pay for labor, shipping cost, loss of revenue or perishable goods, commercial losses, costs of telephone calls, shipping or general inconvenience. This is our only warranty expressed or implied. Unauthorized warranty returns may be refused. Warranty generally covers MFG defects in material or workmanship. Abuse, overloading, improper lubrication, misuse, commercial or competition use voids warranty. Normal characteristics are not warrantable, such as Gear whine. Minor cosmetic flaws, dings, burrs from shipping or manufacturing, are not considered defect, it is installer responsibility to address these at time of install. Customer is responsible for shipping charges if warranty is granted. Warranty is for the original purchaser/user, is not transferable. Warranty covers one replacement or credit solely at our discretion. Warranty determinations are at our sole discretion.

In addition to the above conditions, see special notes for these products:

Ring & Pinion - Warrantied against manufacturing defects. 2 years from date of purchase. Must provide set-up specs.

Chromoly front Axles, Excalibur Joints, 30/30 Birfield kits - Warrantied against manufacturing defects for the life of the vehicle. These products are also covered for Breakage. The Shaft / joint must be BROKEN. Wear, twisting, bending are not warrantable. Damages caused by failure of other parts are not warrantable, for example broken U-joint (other than Nitro Excalibur) causing damage to Axle ears.

Rear Chromoly Axles - Warrantied against manufacturing defects for 5 years. These products are also covered for Breakage. The Shaft must be BROKEN. Worn, twisted, or bent axles are not warrantable.


This product can expose you to chemicals including toluene and benzene, which are known to the State of California to cause cancer and birth defects or other reproductive harm.
For more information go to:


Box Weight: 5.5 lb

Box Dimensions: 1 x 1 x 1 in

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