USA Standard Gear

9.25" Ring Gear Differential w/ 3.21 Ratio

$429.89

SKU: ZG C9.25-321

In Stock
In Stock
Ships by Aug 31
Free Shipping over $200
$100 Minimum Order
30 Days Return

Description

USA Standard Gear implements rigorous in-house quality testing, including dimensional, material, and fitment evaluations, to ensure each product meets high standards. This specific set features a 9.25-inch ring gear diameter and a 29-spline pinion, designed to work with 12 ring gear bolts. It offers a 3.21 gear ratio. This ring and pinion set is designed to fit Chrysler 9.25-inch rears for models 2010 and down. The extensive application list includes a wide range of Dodge Ram trucks, vans, Ramchargers, Dakotas, Durangos, as well as Chrysler Imperial, New Yorker, and Aspen, and Mitsubishi Raider models from various years. It is compatible with both 4WD and RWD configurations for applicable models like the Dodge Ram 1500 and Dakota. A 1-year warranty against manufacturer defects is included.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandUSA Standard Gear
Part NumberZG C9.25-321
CategoryDrivetrain

We’re here — turning wrenches, just like you.

Call us, follow along, or come say hi.

Buy with Confidence

Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy

Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

View Full Shipping Policy