Zumbrota Drivetrain

4.56 Ring and Pinion Gear Set

$890.89

SKU: YG GM8.5-456

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

Description

This high-performance ring and pinion gear set is manufactured by Yukon Gear and Axle under the Zumbrota Drivetrain brand, with the model number YG GM8.5-456. It is engineered for GM 8.5" and 8.6" axles and features a 4.56 gear ratio for optimized performance. The set includes an 8.50" ring gear diameter, utilizes 10 ring gear bolts, and is compatible with a 30-spline pinion. These specifications are crucial for ensuring proper fitment and function within the differential. Installation of a ring and pinion gear set typically requires specialized knowledge and tools. Professional installation is recommended to ensure correct setup, backlash, and pattern, which are vital for the longevity and performance of the drivetrain components. Improper installation can lead to premature wear or failure.

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 NumberYG GM8.5-456
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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