- Alloy USA – 5 Year Limited Warranty
- 4.88 ratio for AMC 20 rear axle
- AMC 20 rear axles were commonly found in 72-86 Jeep CJ5, CJ7 & CJ8
- High quality 8620 forgings and Gleason gear cutting technology
Below is a table that you can use as a guide to select the correct ring & pinion set up for your needs.

The dedicated team of Alloy USA engineers have developed, tested, raced and trail ridden each of our products until they were perfected. They marry the mechanics of engineering with the art of manufacturing to produce the finest in drivetrain solutions. Why do they put so much time and energy into developing our axle shafts and ring & pinions? Because horsepower is useless if you can’t get it to the ground. They take pride in engineering solutions and prove it by backing each product with an industry leading warranty. Each axle is covered by our exclusive 10-year limited warranty and each ring and pinion is covered by a 5-year limited warranty so you can drive with confidence!
| SKU | AMC488 |
|---|---|
| Cross Reference | AMC/488 |
| Manufacturer | Alloy USA |
| Install Time | 5+ Hours |
| Warranty | 5 Year Limited |
| UPC | 801773000064 |












