Zumbrota Drivetrain

USA Standard 4.30 Ratio Ring & Pinion

$519.89

SKU: ZG GM11.5-430

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

Description

The USA Standard Ring & Pinion gear set is designed for GM & Chrysler 11.5" rear differentials, offering a 4.30 ratio. Manufactured by USA Standard Gear, these sets are built to exceed original equipment (OE) specifications. Each set is subjected to rigorous in-house quality evaluation, ensuring it meets stringent dimensional, material, and fitment testing standards. This ring and pinion gear set is a direct replacement, intended to maintain or improve the performance of your vehicle's differential. The 4.30 ratio is ideal for applications requiring a balance between acceleration and highway cruising capabilities, depending on tire size and overall gearing. While specific vehicle fitment details are best confirmed via the "Select Vehicle" tool on the product page, this set is explicitly listed for GM & Chrysler 11.5" Rear applications. Buyers should consult with Zumbrota Drivetrain's tech support if they have any questions regarding compatibility with their specific build project or vehicle.

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

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Specifications

BrandZumbrota Drivetrain
Part NumberZG GM11.5-430
CategoryDrivetrain

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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.

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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.

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