What is a 4.11 gear ratio and why would I want it?

A 4.11 gear ratio means the driveshaft turns 4.11 times for every one turn of the wheel's differential. This ratio generally improves acceleration and can help compensate for the added weight or drag from larger tires.

What vehicles does this specific ring and pinion set fit?

This set is designed for the Model 20 differential and fits a variety of vehicles including American Motors AMX, Concord, Hornet, Javelin, Matador, and Pacer, as well as Jeep CJ5, CJ7, J10, Scrambler, and Wagoneer models, and Hummer H1. Always verify fitment for your specific year, make, and model.

Does this ring and pinion set come with installation hardware?

This product includes the ring and pinion gears themselves. Installation typically requires additional components such as bearings, seals, and installation kits, which are sold separately.

Yukon Gear & Axle Model 20 Ring & Pinion 4.11 Ratio ZG M20-4

Name: USA Standard Ring & Pinion Gear Set For Model 20 in a 4.11 Ratio
Brand: Yukon Gear & Axle
Price: 308.89 USD
Availability: InStock

USA Standard Ring & Pinion Gear Set For Model 20 in a 4.11 Ratio

$308.89

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Yukon Gear & Axle Model 20 ring and pinion gear set with a 4.11 ratio. Designed to exceed OEM specs for reliable drivetrain performance.

Key Features

Fits many American Motors, Jeep, and Hummer H1 vehicles.
Features a 4.11 gear ratio for improved acceleration.
Designed to exceed OEM specifications for durability.
Undergoes rigorous in-house quality evaluation.
Ensures products pass dimensional, material, and fitment testing.

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Will this fit your vehicle?

Product Details

This Yukon Gear & Axle ring and pinion set features a 4.11 ratio, giving your vehicle's final drive a more aggressive gear ratio than stock. This means your engine will turn more revolutions for every rotation of the driveshaft, which can improve acceleration. These sets are built to meet or exceed original equipment specifications, undergoing rigorous in-house quality checks for dimensions, materials, and proper fitment. They are designed for a range of vehicles, including many American Motors models from the late 60s through the early 80s, as well as various Jeep CJ and J-series trucks from the mid-70s to mid-80s, and even Hummer H1 models from the early 2000s.

When you're looking to change your vehicle's gearing, whether for larger tires or improved off-the-line performance, a well-built ring and pinion set is crucial. Yukon's commitment to quality means you get a solid option that's ready for the road or trail. Proper installation is key to ensuring longevity and performance, so be sure to follow the manufacturer's instructions carefully, which typically involves setting backlash and gear pattern correctly.