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Drivetrain› Differentials and Rear-End Components

Zumbrota Drivetrain

Rear Axle Assembly with 4.56 Ratio

Name: Rear Axle Assembly with 4.56 Ratio
Brand: Zumbrota Drivetrain
SKU: RAA435-2159X2-L

$4,068.89

SKU: RAA435-2159X2-L

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$100 Minimum Order

Non-Returnable Item

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Overview

The Zumbrota Performance Axle is a rear axle assembly designed for AAM 11.5 applications. This assembly features a 4.56 ratio and a Grizzly differential. It is built to order and is part of Zumbrota's remanufacturing performance standards.

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The Zumbrota Performance Axle is a remanufactured rear axle assembly specifically designed for AAM 11.5 axles. This unit features a 4.56 gear ratio and a robust Grizzly differential, offering enhanced performance for your driving needs. Zumbrota Performance Axles are recognized as a standard in remanufacturing quality. All tubes undergo inspection to ensure they are straightened to OEM specifications, guaranteeing a proper fit and reliable performance. Custom options, including limited-slip differentials and lockers, are available to tailor the performance to specific vehicle owner requirements. This specific assembly is designed for the 2003-2008 Ram 1500 Mega Cab. Buyers should confirm fitment for their specific vehicle before purchase. A refundable core charge of $1,000 applies, which is returned upon receipt of the 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

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Specifications

Brand	Zumbrota Drivetrain
Part Number	RAA435-2159X2-L
Category	Drivetrain

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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.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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