Sale

Zumbrota Drivetrain

GM 8.6 Rear Axle Assembly 4.56 Ratio

$2,101.98 $1,910.89 Save $191.09

SKU: RAA435-2240X1

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

Description

The Zumbrota Performance Axle, Rear Axle Assembly (RAA435-2240X1-P) is a remanufactured unit designed to upgrade the drivetrain of GM 8.6 equipped 2005-2007 GM 1500 Pickups. This assembly comes equipped with a 4.56 gear ratio and a Yukon Duragrip limited-slip differential, providing enhanced performance tailored to the owner's driving style. Built to Zumbrota's high standards in remanufacturing, this rear axle assembly incorporates aftermarket gear upgrades for improved performance. It features a robust nodular steel ZPA differential cover, offering superior strength and protection for the internal drivetrain components. Each tube undergoes inspection to ensure it is straightened to OEM specifications, guaranteeing proper fit and alignment. This product is compatible with GM 8.6 axles and is specifically listed for the 2005-2007 GM 1500 Pickup models. When ordering, please be aware of the refundable core charge of $400.00, which is credited back upon the return of your old, salvageable part.

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

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

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Specifications

BrandZumbrota Drivetrain
Part NumberRAA435-2240X1
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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